A disposable section of endoscope handle and endoscope

Abstract

The present invention discloses a disposable section of an endoscope handle and an endoscope. The disclosed disposable section of the endoscope handle includes a shell, a transmission assembly, an input assembly and an output assembly. The transmission assembly includes a coaxially linked input gear and a transmission member. The input assembly includes two first push rods symmetrically meshed on both sides of the input gear. The output assembly includes a traction rope, which connects the transmission member and an active bending section of the endoscope. In the above scheme, the input assembly is connected to the output assembly through the transmission assembly. The input assemblies of multiple disposable sections can always match the same reusable section, while the output assemblies of multiple disposable sections can be different, so that the maximum bending angles of the active bending section of the endoscope formed by the connection are different, so as to meet different usage scenarios. When the usage scenario changes, the disposable section matching the usage scenario can be replaced, so that the reusable section has universality and effectively reduces the usage cost.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a disposable section of an endoscope handle and an endoscope. Background Art

[0002] As a medical diagnostic instrument, an endoscope can enter the body and take images of the lesion through a camera packaged at the far end, providing doctors with sufficient diagnostic information to treat the disease. The endoscope includes an endoscope handle, and the doctor can control the bending action of the active bending section of the endoscope by operating the endoscope handle. In the related art, there is a detachable endoscope handle, which includes a reusable section and a disposable section. After use, the disposable section is discarded, which can not only solve the problem of cross infection, but also reduce the cost of discarding the endoscope.

[0003] Endoscopes can be divided into oral endoscopes, urethral cystoscopes, laparoscopes and arthroscopes according to the parts they reach. The requirements for the bending amplitude of the active bending segments of different types of detachable endoscopes are not the same; therefore, the disposable segments and reusable segments of each type of endoscope are matched with each other, and the reusable segments of multiple types of endoscopes cannot be replaced, which makes the reusable segments of endoscopes have technical problems of poor versatility and high manufacturing cost. Summary of the invention

[0004] Based on this, it is necessary to provide a disposable section of an endoscope handle and an endoscope to address the above-mentioned technical problems.

[0005] The present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a disposable section of an endoscope handle, the disposable section comprising:

[0007] case;

[0008] A transmission assembly, the transmission assembly comprising a coaxially linked input gear and a transmission member, the input gear and the transmission member being rotatably disposed in the housing;

[0009] An input assembly, the input assembly comprising two first push rods, the two first push rods being symmetrically meshed on both sides of the input gear so that the two first push rods move synchronously in opposite directions;

[0010] An output component includes a traction rope, wherein the traction rope connects the transmission member and the active bending section of the endoscope so that the active bending section of the endoscope can bend as the input gear rotates.

[0011] Furthermore, the transmission member includes an output gear, and the output assembly includes two second push rods, the two second push rods are symmetrically meshed on both sides of the output gear, so that the two second push rods move synchronously in opposite directions, and the traction rope is connected to the distal end of the second push rod.

[0012] Furthermore, a contact portion is disposed at the proximal end of the first push rod, and a traction rope connecting portion is disposed at the distal end of the second push rod.

[0013] Furthermore, the transmission member includes a wheel disc, and the traction rope is connected to the wheel disc.

[0014] Furthermore, the transmission member includes a crank, the output assembly includes a connecting rod and a traction rope connecting member, the traction rope connecting member is movably arranged on the shell, one end of the connecting rod is rotatably connected to the crank, and the other end of the connecting rod is rotatably connected to the traction rope connecting member.

[0015] Furthermore, a slide rail is provided in the shell, and the slide rail is extended along the axial direction of the shell, and the traction rope connecting piece is slidably matched with the slide rail.

[0016] Further, the input gear is integrally connected to the transmission member; or, the transmission assembly further comprises a transmission shaft rotatably disposed in the housing, and the input gear and the transmission member are sleeved on the transmission shaft.

[0017] Furthermore, the input assembly is connected to the output assembly through the transmission assembly to form a transmission structure, and one or two transmission structures are arranged in the housing.

[0018] Furthermore, the housing is provided with a docking plug, and when there are two transmission structures, the two transmission structures are distributed on both sides of the docking plug.

[0019] In a second aspect, the present invention further provides an endoscope comprising a reusable section and a plurality of the aforementioned disposable sections, each of the disposable sections being detachably connected to the reusable section, and the maximum bending angles of the active bending sections between two endoscopes formed by any two of the disposable sections being respectively connected to the reusable section are different.

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

[0021] The disposable section of the endoscope handle disclosed by the present invention has an input component connected to an output component through a transmission component. The input components of multiple disposable sections can always match the same reusable section, while the output components of multiple disposable sections can be different. For different usage scenarios, the disposable sections that match the usage scenarios can be replaced, that is, the transmission parts and output components with different design parameters are replaced, while the design parameters of the input gears and input components of various types of disposable sections remain consistent and are always matched with the same reusable section, so that the maximum bending angles that the active bending sections of the endoscope formed by the connection can be different. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a schematic diagram of the structure of the disposable section of the first embodiment of the present application;

[0024] Figure 2 is a cross-sectional view of the disposable section of the first embodiment of the present application;

[0025] Figure 3 It is a structural schematic diagram of a transmission assembly of Embodiment 1 of the present application;

[0026] Figure 4 It is a connection diagram of the input assembly, the transmission assembly and the output assembly of the first embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the internal structure of the disposable section of the first embodiment of the present application;

[0028] Figure 6 is a schematic structural diagram of a transmission assembly according to Embodiment 2 of the present application;

[0029] Figure 7 It is a schematic diagram of the connection between the transmission assembly and the output assembly of the second embodiment of the present application;

[0030] Figure 8 It is a connection diagram of the input assembly, the transmission assembly and the output assembly of the second embodiment of the present application;

[0031] Fig. 9 It is a schematic diagram of the internal structure of the disposable section of the second embodiment of the present application;

[0032] Fig.10 is a schematic diagram of the structure of the transmission assembly of the third embodiment of the present application;

[0033] Fig.11 It is a connection diagram of the input assembly, the transmission assembly and the output assembly of the third embodiment of the present application;

[0034] Fig.12 It is a schematic diagram of the internal structure of the disposable section of Example 3 of the present application.

[0035] In the figure:

[0036] 100-housing; 200-transmission assembly, 210-input gear, 220-output gear, 230-wheel plate, 240-crank, 300-input assembly, 310-first push rod, 311-abutment portion, 400-output assembly, 410-traction rope, 420-second push rod, 421-traction rope connecting portion, 430-connecting rod, 440-traction rope connecting piece, 450-slide rail; 500-docking plug. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] In the present invention, "proximal" and "distal" refer to the distance between the structure and the human body in the use environment, so as to facilitate the description of the positional relationship between the components and facilitate understanding; "proximal" and "distal" are relative positional relationships, not absolute ones.

[0040] Embodiment 1

[0041] The following is combined with Figures 1 to 5, the disposable section of the endoscope handle and the endoscope provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0042] Reference Figure 1 to Figure 5 The embodiment of the present application discloses a disposable section of an endoscope handle. The disclosed disposable section of the endoscope handle includes a shell 100, a transmission assembly 200, an input assembly 300 and an output assembly 400.

[0043] The housing 100 is a basic component of the disposable section, and can provide an installation foundation for the transmission assembly 200, the input assembly 300, and the output assembly 400. Specifically, the housing 100 is provided with a receiving space, the transmission assembly 200 is rotatably arranged in the housing 100, at least part of the input assembly 300 is located in the housing 100 and is in transmission cooperation with the transmission assembly 200, the input assembly 300 is used to connect with the reusable section of the endoscope handle, at least part of the output assembly 400 is located in the housing 100 and is in transmission cooperation with the transmission assembly 200, and the output assembly 400 is used to connect with the active bending section of the endoscope.

[0044] Specifically, refer to Figure 3 The transmission assembly 200 includes a coaxially arranged input gear 210 and a transmission member. The input gear 210 and the transmission member are coaxially linked. When the input gear 210 rotates, the transmission member rotates synchronously with the input gear 210.

[0045] Reference Figure 4 The input assembly 300 includes two first push rods 310, and the first push rods 310 are provided with first racks extending along the axial direction thereof. The two first push rods 310 are symmetrically meshed with the two sides of the input gear 210 through the first racks. When the input gear 210 rotates, the two first push rods 310 move synchronously in opposite directions. The input assembly 300 serves as the power input end of the disposable section, and is used for transmission connection with the driving mechanism in the reusable section. When in use, the disposable section is connected to the reusable section, and the endoscope handle is operated, and the driving mechanism in the reusable section can push the first push rod 310 to move, thereby driving the input gear 210 to rotate.

[0046] The output component 400 includes a traction rope 410, which connects the transmission member and the active bending section of the endoscope. When the transmission member rotates, the traction rope 410 pulls the active bending section of the endoscope, so that the active bending section of the endoscope bends along a preset direction.

[0047] The disposable segment of the endoscope handle disclosed in the embodiment of the present application, the input component 300 is connected to the output component 400 through the transmission component 200, the input components 300 of multiple disposable segments can always match the same reusable segment, and the output components 400 of multiple disposable segments can be different. For different usage scenarios, the disposable segments that match the usage scenarios can be replaced, that is, the disposable segments with transmission parts and output components 400 with different design parameters are replaced. The active bending segments of the endoscope formed by connecting the multiple disposable segments with the reusable segments have different maximum bending angles and can be switched according to different usage scenarios; at the same time, each different disposable segment can match the same reusable segment, so that the reusable segment has universality, which effectively reduces the production cost and use cost of the endoscope.

[0048] In the embodiments of this application, refer to Figure 3 The transmission member may include an output gear 220, and the output assembly 400 includes two second push rods 420. The second push rods 420 are provided with a second rack extending along the axial direction thereof. The two second push rods 420 are symmetrically meshed on both sides of the transmission member. The traction rope 410 is connected to the distal end of the second push rods 420. When the output gear 220 rotates following the input gear 210, the two second push rods 420 move synchronously in opposite directions, so that the traction rope 410 pulls the active bending section of the endoscope to bend along a preset direction.

[0049] Reference Figure 3 As shown, the proximal end of the first push rod 310 is provided with an abutment portion 311 for abutting against the driving mechanism in the reuse section, and the distal end of the second push rod 420 is provided with a traction rope connecting portion 421 connected to the traction rope 410.

[0050] In a further technical solution, in the axial direction of the disposable section, the cross-section of the abutment portion 311 is circular, and the abutment portion 311 is slidably fitted in the shell 100. In this case, the smoothness of the movement of the first push rod 310 can be improved to avoid jamming.

[0051] In an embodiment of the present application, the pitch circle diameter of the input gear 210 is different from the pitch circle diameter of the output gear 220. When the two rotate synchronously, the first stroke of the first push rod 310 is different from the second stroke of the second push rod 420. When the design parameters of the input gear 210 and the first push rod 310 remain unchanged, the design parameters of the output gear 220 and the second push rod 320 are changed, such as changing the pitch circle diameter of the output gear 220 and correspondingly changing the spacing between the two second push rods 420, thereby changing the maximum bending angle of the active bending section of the endoscope.

[0052] In an optional embodiment, the pitch circle diameter of the input gear 210 is larger than the pitch circle diameter of the output gear 220, that is, in the transmission assembly 200, the input gear 210 is a large gear, and the output gear 220 is a small gear. The large gear drives the small gear to rotate, so that the second stroke of the second push rod 420 is smaller than the first stroke of the first push rod 410, which can reduce the maximum bending angle of the active bending section of the endoscope and match the active bending section of the endoscope with the corresponding usage scenario; at the same time, using the large gear to drive the small gear to rotate can make the active bending section of the endoscope bend more delicately, so that the active bending section of the endoscope can be accurately oriented to the lesion site.

[0053] In another optional embodiment, the pitch circle diameter of the input gear 210 is smaller than the pitch circle diameter of the output gear 220, that is, in the transmission assembly 200, the input gear 210 is a small gear, and the output gear 220 is a large gear. The small gear drives the large gear to rotate, so that the second stroke is greater than the first stroke, thereby increasing the maximum bending angle of the active bending section of the endoscope, so that the bending amplitude of the active bending section of the endoscope matches its usage scenario.

[0054] It should be noted that in the embodiment of the present application, for the same disposable segment, the design parameters of the output gear 220 (for example, the pitch circle diameter of the output gear 220) are determined. The change in the design parameters of the transmission member indicated in the embodiment of the present application means that the design parameters of the output gear 220 of the next disposable segment to be replaced are different from those of the previous disposable segment. Multiple disposable segments are adapted to the same reusable segment, making the reusable segment universal in a variety of usage scenarios.

[0055] In the embodiment of the present application, the input gear 210 and the output gear 220 are coaxially linked. In an optional embodiment, the input gear 210 and the output gear 220 are coaxially connected to form a double gear, which has a strong structural strength and reduces the manpower and material costs; in another optional embodiment, the transmission assembly 200 is a split structure, and the transmission assembly 200 also includes a transmission shaft, and the input gear 210 and the output gear 220 are respectively sleeved on the transmission shaft. It should be noted that the present application does not limit the specific connection method of the input gear 210 and the output gear 220, as long as the synchronous rotation of two gears with different pitch circle diameters can be achieved.

[0056] Embodiment 2

[0057] Reference Figure 6 to Figure 9, this embodiment is different from the above-mentioned embodiment 1 in that the transmission member may include a wheel disc 230, that is, the transmission assembly 200 is formed by coaxially connecting the input gear 210 and the wheel disc 230, and the traction rope 410 is connected to the wheel disc 230. In an optional embodiment, the traction rope 410 may be wound around the wheel disc 230, and the wheel disc 230 rotates to drive the traction rope 410 to pull the active bending section of the endoscope; in another optional embodiment, the traction rope 410 may include a first traction section and a second traction section, and the first traction section and the second traction section are respectively connected to the two ends of the wheel disc 230 in the radial direction, and the wheel disc 230 rotates to drive the traction rope 410 to pull the active bending section of the endoscope.

[0058] In this embodiment, when the usage scenario of the endoscope changes, for example, a urethral cystoscope is changed to a laparoscope, it is necessary to replace the disposable section with a wheel 230 having a different diameter from that of the previous disposable section. By changing the diameter of the wheel 230, the traction stroke of the traction rope 410 can be changed, thereby changing the maximum bending angle of the active bending section of the endoscope, so that the maximum bending angle of the active bending section of the endoscope is adapted to the usage environment.

[0059] Similarly, the wheel disc 230 and the input gear 210 may be coaxially connected as one body, or the transmission shaft may realize synchronous rotation, which is not limited in this embodiment.

[0060] Embodiment 3

[0061] Reference Figure 10 to Figure 12 This embodiment is different from the above-mentioned embodiment 1 in that the transmission member may include a crank 240, and the output assembly 400 includes a connecting rod 430 and a traction rope connecting member 440. One end of the connecting rod 430 is rotatably connected to the eccentric point of the crank 240, and the other end of the connecting rod 430 is rotatably connected to the traction rope connecting member 440. The traction rope connecting member 440 is movably arranged on the housing 100, and the moving direction of the traction rope connecting member 440 is the axial direction of the housing 100. When the crank 240 rotates following the input gear 210, the traction rope connecting member 440 is driven to move through the connecting rod 430.

[0062] In the embodiment of the present application, a slide rail 450 is provided in the shell 100, and the slide rail 450 is extended along the axial direction of the shell 100. The traction rope connector 440 is slidably matched with the slide rail 450, and the slide rail 450 has a preset guide track, so that the traction rope connector 440 moves along the extension direction of the slide rail 450, so that the movement of the traction rope connector 440 is more stable and the precision is higher.

[0063] In the embodiment of the present application, the transmission assembly 200 may include two cranks 240, and the output assembly 400 may include two connecting rods 430 and two traction rope connectors 440. The two cranks 240 are distributed on both sides of the axial direction of the input gear 210, and the two connecting rods 430 are respectively connected to the two cranks 240, and each connecting rod 430 is connected to a traction rope connector 440; in this case, it is possible to realize that the active bending section of the endoscope is bent in two opposite directions, and to avoid interference between the two connecting rods 430 during movement, thereby improving the stability of the disposable section of the endoscope handle.

[0064] It should be noted that, in this embodiment, the two cranks 240 are symmetrical about the axis of the housing 100 to ensure that the two traction rope connectors 440 move synchronously in opposite directions.

[0065] Reference Fig.11 The slide rail 450 includes a connecting portion and two guiding portions, and the two guiding portions are connected to the two ends of the connecting portion, so that the slide rail 450 has an I-shaped structure, and the two traction rope connecting members 440 are respectively slidably matched with a guiding portion; under such a setting, the two traction rope connecting members 440 are slidably matched with a slide rail 450, which can reduce the space occupied by the output component 400.

[0066] Embodiment 4

[0067] This embodiment is a further improvement on the above-mentioned embodiment 1, embodiment 2 or embodiment 3. In order to better implement the present invention, the following structure is particularly adopted:

[0068] Reference Figure 5 , Fig. 9 or Fig.12 The input assembly 300 is connected to the output assembly 400 through the transmission assembly 200 to form a transmission structure.

[0069] In an optional embodiment, the transmission structure can be one. When the transmission structure is one, the operating reusable section can control the bending of the active bending section of the endoscope in two directions. In another optional embodiment, the transmission structure can be two, that is, the transmission component 200, the input component 300 and the output component 400 can each be two. In this case, the operating reusable section can control the bending of the active bending section of the endoscope in four directions.

[0070] In the embodiment of the present application, the housing 100 is provided with a docking plug 500, which can be docked with the reusable segment to achieve electrical connection, thereby transmitting image data captured by the front end component of the endoscope.

[0071] In a further technical solution, the docking plug 500 is arranged in the middle of the proximal end of the shell 100, and the two transmission structures are distributed on both sides of the docking plug; with such a setting, it is convenient for the plug-in assembly of the disposable section and the reusable section; at the same time, an accommodating space is formed between the two transmission structures, which can accommodate the docking plug 500 part and the proximal part of the endoscope insertion tube, thereby realizing a reasonable layout of the radial space of the shell 100, which is conducive to the miniaturization of the endoscope handle.

[0072] Embodiment 5

[0073] The embodiment of the present application also discloses an endoscope, including a reusable section and a plurality of the aforementioned disposable sections, the reusable section can be detachably connected to any one of the plurality of disposable sections to form an endoscope handle, and any two disposable sections are respectively connected to the reusable section to form two endoscopes, because the design parameters of the transmission parts and the output assembly 400 in the two disposable sections are different, the maximum bending angle of the active bending section of the endoscope is different to meet different usage scenarios. In the embodiment of the present application, the disposable and reusable sections can be detachably connected by means of threaded connectors, snap-on connections, magnetic connections, etc., and the present application does not limit the specific connection method of the disposable and reusable sections.

[0074] 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.

[0075] 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. A disposable section of an endoscope handle, characterized in that: include: Housing (100); A transmission assembly (200), the transmission assembly (200) comprising a coaxially linked input gear (210) and a transmission member, the input gear (210) and the transmission member being rotatably disposed in the housing (100); An input assembly (300), the input assembly (300) comprising two first push rods (310), the two first push rods (310) symmetrically meshed on both sides of the input gear (210), so that the two first push rods (310) move synchronously in opposite directions; An output assembly (400), the output assembly (400) comprising a traction rope (410), the traction rope (410) connecting the transmission member and the active bending section of the endoscope, so that the active bending section of the endoscope can bend as the input gear (210) rotates; Any one of the multiple disposable segments can be detachably connected to the reusable segment to form an endoscope handle; the design parameters of the transmission member and the output component in any two of the disposable segments can be different, so that the maximum bending angle of the active bending segment of the endoscope is different.

2. The disposable section of the endoscope handle according to claim 1, characterized in that: The transmission member includes an output gear (220), and the output assembly (400) includes two second push rods (420). The two second push rods (420) are symmetrically meshed on both sides of the output gear (220), so that the two second push rods (420) move synchronously in opposite directions, and the traction rope (410) is connected to the distal end of the second push rod (420).

3. The disposable section of the endoscope handle according to claim 2, characterized in that: The proximal end of the first push rod (310) is provided with an abutment portion (311), and the distal end of the second push rod (420) is provided with a traction rope connection portion (421).

4. The disposable section of the endoscope handle according to claim 1, characterized in that: The transmission member comprises a wheel disc (230), and the traction rope (410) is connected to the wheel disc (230).

5. The disposable section of the endoscope handle according to claim 1, characterized in that: The transmission member comprises a crank (240), and the output assembly (400) comprises a connecting rod (430) and a traction rope connecting member (440). The traction rope connecting member (440) is movably arranged on the housing (100), one end of the connecting rod (430) is rotatably connected to the crank (240), and the other end of the connecting rod (430) is rotatably connected to the traction rope connecting member (440).

6. The disposable section of the endoscope handle according to claim 5, characterized in that: A slide rail (450) is provided in the housing (100), and the slide rail (450) is extended along the axial direction of the housing (100), and the traction rope connecting member (440) is slidably matched with the slide rail (450).

7. The disposable section of the endoscope handle according to any one of claims 1 to 6, characterized in that: The input gear (210) is integrally connected to the transmission member; or, the transmission assembly (200) further comprises a transmission shaft rotatably disposed in the housing (100), and the input gear (210) and the transmission member are sleeved on the transmission shaft.

8. The disposable section of the endoscope handle according to any one of claims 1 to 6, characterized in that: The input component (300) is connected to the output component (400) via the transmission component (200) to form a transmission structure, and one or two transmission structures are arranged in the housing (100).

9. The disposable section of the endoscope handle according to claim 8, characterized in that: The housing (100) is provided with a docking plug (500), and when there are two transmission structures, the two transmission structures are distributed on both sides of the docking plug (500).

10. An endoscope, characterized in that: It comprises a reusable segment and a plurality of disposable segments as described in any one of claims 1 to 9, each of the disposable segments is detachably connected to the reusable segment, and the maximum bending angles of the active bending segments between two endoscopes formed by any two of the disposable segments being respectively connected to the reusable segment are different.

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