Disposable connection structure and disposable endoscope having the same

Abstract

This invention relates to the field of medical device technology. A disposable connection structure includes: a disposable part having a first through-hole and a first optoelectronic integrated connection for connecting an optical fiber and a video signal line; a first connector reciprocating within the first through-hole; and a handheld part having multiple second through-holes and a second optoelectronic integrated connection for connecting an optical fiber and a video signal line; a second connector reciprocating within the second through-hole. When the handheld part and the disposable part are mutually constrained and connected, the ends of the first and second connectors are correspondingly connected, allowing reciprocating movement along the length of the through-hole within the through-hole space after the first and second through-holes connect. Furthermore, the first and second optoelectronic integrated connections are mated and connected. Separating the disposable part from the handheld part reduces sterilization time, improves work efficiency, and controls the risk of cross-infection.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a disposable connection structure and a disposable endoscope having the same. Background Technology

[0002] Some integrated optical devices can be used for the transmission of photoelectric signals. Especially for targets that may carry pathogens, the detection part of the optical device needs to be cleaned and disinfected after use before it can be used again. For example, endoscopes are optical devices.

[0003] Currently, when using an endoscope, a semi-flexible tube is inserted into the stomach through the mouth or into the body through a natural orifice. A steel wire inside the tube is then used to stretch the insertion head, allowing the observation lens placed at the insertion head to bend up, down, left, and right within a certain range, thereby adjusting the observation direction of the lens.

[0004] The endoscope's handheld control unit and insertion section are integrated, with both suction and treatment channels located inside the tube. After each endoscopic examination, the entire endoscope must undergo a rigorous specialized cleaning and sterilization process before it can be used on the next patient. Due to the relatively long length of semi-flexible endoscopes, cleaning, disinfection, and sterilization are often incomplete. This increases the risk of cross-infection for healthcare workers involved in cleaning the endoscope. Furthermore, the evaporation of disinfectant poses a potential health risk to healthcare personnel, creating safety hazards for both patients and medical staff.

[0005] Literature shows that cross-infection incidents caused by improper cleaning and sterilization of endoscopes occur frequently worldwide each year, and the trend is increasing annually. The FDA (Food and Drug Administration, generally referring to the U.S. Food and Drug Administration) has issued relevant warnings on its official website and has also imposed heavy administrative penalties on products from certain countries. Summary of the Invention

[0006] In view of the above-mentioned defects in the prior art, the present invention provides a disposable connection structure and a disposable endoscope having the same, which solves the above-mentioned technical problems and provides a split disposable connection structure in which the endoscope handle operating part and the insertion tube can be separated.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] In one aspect, the present invention provides a one-time connection structure comprising:

[0009] The discard section has a first through hole that passes through the discard section and a first optoelectronic integrated connection section for connecting optical fiber and video signal line. The first through hole has a first connector that can reciprocate within the first through hole.

[0010] The handheld part has multiple second through holes and a second optoelectronic integrated connection part for connecting optical fibers and video signal lines. The second through holes have second connectors that can reciprocate within the second through holes. The number of second connectors is the same as the number of first connectors.

[0011] With the handheld part and the discarding part mutually constrained and connected, the ends of the first connector and the second connector are connected accordingly, and can reciprocate along the length direction of the perforation in the perforation space after the first perforation and the second perforation are connected. Furthermore, the first optoelectronic integrated connection part and the second optoelectronic integrated connection part are docked and connected so that the first optoelectronic integrated connection part and the second optoelectronic integrated connection part can transmit video signals and light to each other.

[0012] In one possible implementation, the first connector includes a first connecting rod and a first connecting portion, one end of the first connecting rod being connected to the end of the first steel wire, and the other end being provided with the first connecting portion; the first connecting portion is connected to the second connector.

[0013] In one possible implementation, the outer diameter of the end of the first connecting rod connected to the first steel wire is smaller than that of the other end of the first connecting rod; a first spring is sleeved on the first connecting rod, and the inner diameter of the first spring is smaller than the maximum outer diameter of the first connecting rod; the first through hole is a stepped hole; wherein...

[0014] One end of the first spring abuts against the stepped surface of the first through hole, and the other end fits against the end of the first connecting rod with the larger outer diameter, so that when the first connecting rod reciprocates in the first through hole, the first spring is used to reset the first connecting rod.

[0015] In one possible implementation, a first groove is formed on the wall of the hole with a larger inner diameter in the first perforation, extending along the length of the first perforation; and a first protrusion is formed on the outer wall of the first connecting rod to mate with the first groove.

[0016] When the first connecting rod reciprocates within the first through hole, the first protrusion is positioned within the first sliding groove and moves along the first sliding groove to prevent the first connecting rod from rotating axially during reciprocating movement.

[0017] In one possible implementation, the first connecting part includes a U-shaped limiting member and a U-shaped limiting connecting rod connected to the U-shaped limiting member. The end of the U-shaped limiting connecting rod away from the U-shaped limiting member is connected to the first connecting rod so that the U-shaped limiting member and the first connecting member are spaced at a certain distance for fixing the second connecting member.

[0018] In one possible implementation, one end of the second connector is connected to the second steel wire, and the other end is provided with a limiting ball head; a second spring is sleeved on the second connector; the second through hole is a stepped hole, wherein...

[0019] At the connection between the limiting ball head and the second connecting member, the open end of the U-shaped limiting member is engaged to place the limiting ball head between the U-shaped limiting member and the first connecting member. When the limiting ball head moves along the length direction of the second connecting member, the U-shaped limiting member prevents the limiting ball head from disengaging from the first connecting rod. One end of the second spring abuts against the second connecting member or is sleeved on part of the second connecting member, and the other end abuts against the stepped platform of the second through hole to reset the second connecting member.

[0020] In one possible implementation, the end face adjacent to the discard portion and the handle portion is provided with a groove protruding from the handle portion. Within the groove, opposite ends are respectively provided with a first groove position and a second groove position. The end face of the first through hole is positioned at the first groove position, so that the U-shaped limiting member is positioned at the first groove position.

[0021] During the mutual constraint connection between the disposal part and the handheld part, the limiting ball head is inserted into the second groove position, and the disposal part is rotated so that the limiting ball head moves along the groove to the first groove position, and the U-shaped limiting member limits the connection of the limiting ball head; when the disposal part is rotated in the opposite direction, the U-shaped limiting member releases the limiting connection of the limiting ball head.

[0022] In one possible embodiment, the second steel wire is provided with a second steel wire adjustment mechanism for adjusting the tension of the second steel wire. The second steel wire adjustment mechanism includes a positioning block and a positioning groove. The second steel wire is connected to the positioning block, and the positioning groove is connected to a drive chain. The drive chain rotates to drive the positioning groove to move along the walking direction of the drive chain. The end of the positioning groove away from the drive chain it is connected to has a notch extending from the top to the bottom of the positioning groove, so that when the positioning block is placed in the positioning groove, the connection part between the positioning block and the second steel wire can pass through the notch. The positioning groove has at least two adjustment areas along the length of the second steel wire, so that when the positioning block is placed in different adjustment areas, the tension of the second steel wire between the positioning groove and the second connector can be adjusted.

[0023] In one possible implementation, the adjustment area includes grooves extending from the top of the positioning groove to the bottom of the positioning groove on two opposite sidewalls of the positioning groove, and positioning protrusions that cooperate with the grooves on opposite sidewalls of the positioning block; wherein, when the positioning block moves from the top of the positioning groove to the bottom of the groove, the positioning protrusions can slide along one end of the groove to the other end, and the grooves restrict the positioning protrusions from moving within the positioning groove along the length direction of the second wire.

[0024] In one possible implementation, a wire guide mechanism is also included, which is fixed inside the handheld part;

[0025] The wire guiding mechanism includes at least a first rod, a second rod, and a third rod, and two opposing support frames. The first and second rods are spaced a certain distance apart to allow the second wire to travel between them. The third rod is spaced apart from the first rod along the direction of the second wire's travel. The two ends of the first, second, and third rods are respectively connected to the two support frames; or

[0026] The wire guiding mechanism includes a spring tube holder and a spring tube. The spring tube holder is used to fix one end of a hollow spring tube that guides the direction of the second wire, and the other end of the spring tube is fixed to the second through-hole end face.

[0027] In one possible implementation, a limiting mechanism is further included. The limiting mechanism is disposed within the handheld portion and includes a limiting block, a limiting block adjusting screw, and a limiting block fixing frame. The limiting block fixing frame is disposed within the handheld portion, and the limiting block adjusting screw is rotatably connected thereto. The limiting block adjusting screw is threadedly connected thereto with a limiting block.

[0028] The outer wall of the positioning groove is provided with a positioning groove protrusion, which protrudes out of the positioning groove; when the transmission chain moves, the movement distance of the positioning groove protrusion is limited by the limiting block, thereby limiting the maximum movement distance of the transmission chain.

[0029] Another aspect of the present invention provides a disposable endoscope, including a disposable connection structure as described above.

[0030] The beneficial effects of this invention are as follows: This invention provides a disposable connection structure with a first connector and a first optoelectronic integrated connection part in the disposable section, and a second connector and a second optoelectronic integrated connection part in the handheld section. When the handheld section and the disposable section are mutually constrained, the ends of the first connector and the second connector are connected accordingly, and the ends of the first optoelectronic integrated connection part and the second optoelectronic integrated connection part are mated. At this time, the second connector can control the operation of the steel wire connected to the first connector, and the second optoelectronic integrated connection part can transmit light and video image signals to the first optoelectronic integrated connection part. The optical fiber connected to the first optoelectronic integrated connection part can be used for illumination, and the connected video signal line can transmit image signals. This method allows the disposable section to be separated from the handheld section after the endoscopic examination is completed, eliminating the need for cleaning, disinfection, and sterilization of the disposable section, allowing it to be directly discarded. This reduces the probability of endoscope damage, saves maintenance costs, improves work efficiency, and reduces the potential infection risk for patients and medical staff.

[0031] To further understand the features and technical content of this invention, please refer to the following detailed description and accompanying drawings. However, the drawings are provided for reference and illustration only and are not intended to limit the invention. Attached Figure Description

[0032] The technical solution and other beneficial effects of the present invention will become apparent from the following detailed description of specific embodiments of the invention, in conjunction with the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the overall structure of a disposable endoscope according to the present invention, wherein the tubing and control switch are not shown in the figure.

[0034] Figure 2 This is a schematic diagram of the external structure of the handheld part of a disposable connection structure according to the present invention.

[0035] Figure 3 yes Figure 2 A schematic diagram of the internal structure.

[0036] Figure 4 This is an internal schematic diagram of the handheld part of a disposable connection structure according to the present invention.

[0037] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0038] Figure 6 This is a schematic diagram of the second steel wire adjustment mechanism of a one-time connection structure according to the present invention.

[0039] Figure 7 This is a schematic diagram of a spring tube fixing bracket with a one-time connection structure according to the present invention, as well as the spring tube structure.

[0040] Figure 8 This is a schematic diagram of a handheld part of a disposable connection structure of the present invention, which includes a spring tube fixing bracket and a spring tube.

[0041] Figure 9 This is a schematic diagram of the first guide block structure of a one-time connection structure according to the present invention.

[0042] Figure 10 This is a schematic diagram of the structure of the second connector of a one-time connection structure according to the present invention.

[0043] Figure 11 This is a schematic diagram of the connection end between the handheld part and the disposable part of a disposable connection structure according to the present invention;

[0044] Figure 12 This is a front view of the handheld part of a disposable connection structure of the present invention, which has a second optoelectronic integrated connection part;

[0045] Figure 13 This is an external schematic diagram of the discard portion of a disposable connection structure according to the present invention;

[0046] Figure 14 yes Figure 13A magnified view of a portion of the image.

[0047] Figure 15 This is a schematic diagram of the connection end between the disposable part and the handheld part of a disposable connection structure according to the present invention.

[0048] Figure 16 yes Figure 15 A schematic diagram from the first angle.

[0049] Figure 17 yes Figure 16 The second angle diagram shows a partial cut-out of the end where the discard part connects to the handheld part.

[0050] Figure 18 This is a schematic diagram illustrating an implementable disposable end face of a disposable connection structure according to the present invention.

[0051] Figure 19 This is a schematic diagram of another possible implementation of the discard portion end face of a disposable connection structure according to the present invention.

[0052] Figure 20 This is a schematic diagram of the first connector structure of a one-time connection structure according to the present invention.

[0053] Figure 21 This is a schematic diagram of the first and second connectors snapping together in a one-time connection structure according to the present invention.

[0054] Figure label:

[0055] 1. Disposal Department;

[0056] 101. First perforation; 1011. Stepped surface of the first perforation;

[0057] 102. First connector; 1021. First connecting rod; 1022. First connecting part; 10221. U-shaped limiting member; 10222. U-shaped limiting connecting rod; 1023. First protrusion;

[0058] 103. First optoelectronic integrated connection part; 104. First spring;

[0059] 1051. Position of the first groove; 1052. Position of the second groove;

[0060] 106. Arc-shaped protrusion

[0061] 2. Handheld part;

[0062] 201, the second perforation; 2011, the stepped surface of the second perforation;

[0063] 202. Second connector; 203. Second optoelectronic integrated connector; 204. Limiting ball head; 205. Second spring; 206. Limiting groove;

[0064] 207. Second wire adjustment mechanism; 2071. Positioning block; 2072. Positioning groove; 2073. Adjustment area; 2074. Positioning protrusion; 2075. Positioning groove protrusion;

[0065] 3. Operate the handwheel;

[0066] 4. Observe the camera lens;

[0067] 5. Insert the tube;

[0068] 6. Bending section;

[0069] 61. First steel wire; 62. Second steel wire;

[0070] 7. Wire guide mechanism; 71. First rod; 72. Second rod; 73. Third rod; 74. Support frame; 75. Bourdon tube fixing frame; 76. Bourdon tube;

[0071] 81. Drive chain; 82. Partition plate; 83. First guide block; 84. Second guide block; 85. Water and air passage hose; 86. Suction passage hose; 87. Connecting hole; 88. Control switch; 89. Lighting structure;

[0072] 9. Limiting mechanism; 91. Limiting block; 92. Limiting block adjusting screw; 93. Limiting block fixing frame;

[0073] 100. Instrument access entrance. Detailed Implementation

[0074] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the preferred embodiments of the present invention and their accompanying drawings.

[0075] The existing endoscope uses a handwheel 3 on the handpiece to adjust the rotation direction of the observation lens 4 at the working end of the endoscope, so as to facilitate observation of the internal condition of the subject. Specifically, the handwheel 3 is connected to multiple steel wires. One end of the steel wire is connected to the handwheel 3, and the other end is connected to the observation lens 4. When the handwheel 3 is rotated, the chain drives the steel wire to move back and forth along the length direction, thereby adjusting the rotation of the observation lens 4 connected to the steel wire.

[0076] After completing an examination with a conventional endoscope, the entire endoscope needs to be cleaned, disinfected, and sterilized for reuse. During endoscopic procedures, the observation lens 4 and the connected insertion tube 5 are typically placed inside the patient's body. This means that only the observation lens 4 and insertion tube 5 need cleaning, disinfection, and sterilization; the handpiece 1 does not require this process. Endoscope sterilization is often time-consuming, leading hospitals to require multiple main units and dozens of endoscopes for alternating use. This increases hospital costs. Furthermore, the flushing and suction channels inside the endoscope and insertion tube 5 may cause incomplete sterilization. Reusing the observation lens 4 and insertion tube 5 also necessitates that patients undergo relevant laboratory tests for infectious diseases before the endoscopic examination to prevent cross-contamination of the lens 4 and insertion tube 5 with infectious viruses or pathogens, which could affect subsequent patients. Furthermore, subsequent patients would not want to use the same observation lens 4 and insertion tube 5 as those used by others.

[0077] For the reasons mentioned above, if the insertion tube 5 connected to the handheld part 1 and the observation lens 4 connected to the insertion tube 5 are designed to be integrated with the handheld part, the insertion tube 5 and the observation lens 4 can be discarded after one use and replaced with new ones for subsequent examinations. This method can avoid the risk of infection for the examined subject and also avoid the need for related examinations performed on the subject for endoscopy. The inventor has invented a connection structure for a disposable endoscope, the details of which are as follows:

[0078] Please see Figures 1 to 21 ,like Figure 1 As shown, the disposable connection structure of the present invention includes: a discard part 1 and a hand-held part 2, wherein the connection ends of the discard part 1 and the hand-held part 2 are mutually constrained and connected.

[0079] The handheld part 2 has multiple second through holes 201 inside. The steel wire connected to the operating handwheel 3 passes through the second through holes 201 and connects to the second connector 202. When adjusting the operating handwheel 3, the steel wire moves along the through holes 201, thereby driving the second connector 202 to move. In addition, a second optoelectronic integrated connection part 203 is provided at the end face where the handheld part 2 connects to the disposal part 1. The second optoelectronic integrated connection part 203 is connected to an optical fiber so that the light emitted by the optical fiber can be conducted through the second optoelectronic integrated connection part 203.

[0080] like Figure 3 As shown, the handheld part 2 is also provided with an illumination structure 89 for illumination. Specifically, the illumination structure 89 includes a light source and a light source heat dissipation device. The light source can be a light source that is compatible with optical fibers. The light source heat dissipation device is set on the back plate of the light source to dissipate the heat generated when the light source is working.

[0081] It should be noted that the lighting structure 89 can also be installed outside the handheld part 2 as needed, and the lighting structure 89 is connected to the optical fiber inside the handheld part 2 through a pipeline.

[0082] Then, the disposal part 1 is provided with a first perforation 101 that is the same number as the second perforation 201 that penetrates the disposal part. The first perforation 101 has a first connector 102 that can move along the perforation within the first perforation 101. The opening end of the first perforation 101 is specifically provided at the end where the disposal part 1 and the handheld part 2 are mutually constrained. In addition, this end of the disposal part 1 is also provided with a first optoelectronic integrated connection part 103, which is connected to an optical fiber.

[0083] like Figure 16 As shown, the optoelectronic integrated connection part can be understood as an existing structure capable of transmitting optical and electrical signals through optical fibers and metal contacts. Figure 16 The multiple origins arranged circumferentially on the edge of the first optoelectronic integrated connection part 103 can be metal contacts. It is understood that the second optoelectronic integrated connection part 203 also has the same structure so that the first optoelectronic integrated connection part 103 and the second optoelectronic integrated connection part 203 can dock to transmit optical and electrical signals.

[0084] It should be noted that the objects of inspection can be people or animals, etc.

[0085] Finally, to facilitate multi-directional and multi-angle adjustments to the observation lens 4, the number of both the first connector 102 and the second connector 202 is preferably four. The first connector 102 and the second connector 202 form a group, for a total of four groups. It can be understood that four groups are not a limitation on the number of the first connector 102 and the second connector 202, but rather one of the optimal solutions. Of course, there can be fewer than four groups or more than four groups. The specific number of groups can be selected according to the direction and angle that the observation lens 4 needs to be adjusted.

[0086] like Figure 18 and Figure 19 As shown, it should be noted that the position of the twisted connection structure between the first connector 102 and the second connector 202 can be designed according to actual design needs. For example, the four sets of connection structures between the first connector 102 and the second connector 202 can be set around the optoelectronic integrated connection part, symmetrically arranged in pairs; or they can be arranged circumferentially with the optoelectronic integrated connection part as the center.

[0087] In this embodiment, when the discard part 1 and the handheld part 2 are mutually constrained and connected, the ends of the first connector 102 and the second connector 202 are correspondingly connected, and the connection method can be by snap-fit ​​or other means. When the operating handwheel 3 is adjusted so that the second connector 202 moves along the second through hole 201, the first connector 102 will move with the second connector 202 within the first through hole 101 and the second through hole 201. Furthermore, the steel wire connected to the first connector 102 will drive the observation lens 4 to swing, thereby observing the specific situation inside the object being inspected. The illumination required for observing the object being inspected is transmitted to the second optoelectronic integrated connection part 203 through the optical fiber provided in the handheld part 2. The second optoelectronic integrated connection part 203 then docks and communicates with the first optoelectronic integrated connection part 103. The second optoelectronic integrated connection part 203 can transmit light and signals to the first optoelectronic integrated connection part 103. Finally, the first optoelectronic integrated connection part 103 transmits light to the end of the observation lens 4 through the optical fiber connected to it for illumination and mutual transmission of video signals.

[0088] In one embodiment, the first connector 102 may include a first connecting rod 1021 and a first connecting portion 1022. One end of the first connecting rod 1021 is connected to the end of the first steel wire 61, and the other end is provided with the first connecting portion 1022. The first connecting portion 1022 is connected to the second connector 202.

[0089] The outer diameter of the end of the first connecting rod 1021 connected to the first steel wire 61 is smaller than that of the other end of the first connecting rod 1021. A first spring 104 is sleeved on the first connecting rod 1021, and the inner diameter of the first spring 104 is smaller than the maximum outer diameter of the first connecting rod 1021. The first through hole 101 is a stepped hole. One end of the first spring 104 abuts against the stepped platform 1011 of the first through hole, and the other end fits against the end of the first connecting rod 1021 with the larger outer diameter, so that when the first connecting rod 1021 reciprocates in the first through hole 101, the first spring 104 is used to reset the first connecting rod 1021.

[0090] The first connecting rod 1021 is connected at one end to the first steel wire 61 (the first steel wire 61 is designed to be easily distinguishable from the second steel wire 62 connected to the second connecting member 202; specifically, the first steel wire 61 and the second steel wire 62 may be the same or different steel wires), and the first connecting part 1022 at the other end is used to connect to the second connecting member 202.

[0091] It should be noted that the outer diameter of the first connecting rod 1021 can be designed such that the outer diameter of the end of the first connecting rod 1021 connected to the first steel wire 61 is smaller than the outer diameter of the other end. A first spring 104 for resetting the first connecting rod 1021 is sleeved on the first connecting rod 1021. The inner diameter of the first spring 104 is smaller than the maximum outer diameter of the first connecting rod 1021. Therefore, when the first spring 104 is sleeved on the first connecting rod 1021, the connection end between the first connecting rod 1021 and the first connecting part 1022 can prevent the first spring 104 from disengaging from the first connecting rod 1021.

[0092] It should also be noted that a stepped hole is provided circumferentially inside the first through hole 101. The end of the first spring 104 away from the first connecting rod 1021 abuts against the stepped platform of the stepped hole, so that when the adjusting mechanism 3 adjusts the first steel wire 61 to move towards the hand-held part 1, the first steel wire 61 drives the first connecting rod 1021 to move towards the stepped platform, compressing the first spring 104. When the adjusting mechanism 3 resets the first steel wire 61, the first spring 104 resets the first connecting rod 1021.

[0093] In this embodiment, a first spring 104 is provided on the first connecting rod 1021. When the first steel wire 61 is adjusted and reset by the adjusting mechanism 3, the first spring 104 can reset the first connecting member 102 to ensure that the rotation of the observation lens 4 can be controlled by the operating handwheel 3.

[0094] In one embodiment, a first groove is provided on the wall of the hole with a larger inner diameter of the first through hole 101, which is arranged along the length direction of the first through hole 101. A first protrusion 1023 is provided on the outer wall of the first connecting rod 1021 to cooperate with the first groove. When the first connecting rod 1021 reciprocates within the first through hole 101, the first protrusion 1023 is placed within the first groove and moves along the first groove to prevent the first connecting rod 1021 from rotating axially during reciprocating movement.

[0095] It should be noted that the length direction of the first through hole 101 can refer to the direction in which the first connecting member 102 slides within the first through hole 101. A first groove is provided in the sliding direction of the first through hole 101, and the first groove is formed by the indentation of the hole wall of the first through hole 101. A first protrusion 1023 is provided on the outer wall of the first connecting rod 1021, which mates with the first groove, and the first protrusion 1023 can slide along the groove within the first groove.

[0096] like Figure 20As shown, it should also be noted that when the radial cross-section of the first connector 102 is circular, a first protrusion 1023 is provided on the outer wall of the first connector 102. If the first connector 102 is polygonal, the first protrusion 1023 may not be provided on the outer wall of the first connector 102, and the polygonal structure of the outer wall of the first connector 102 can be used to limit the first connector 102. Of course, it can be understood that when the first connector 102 is polygonal, the shape of the first through hole 101 and the second through hole 201 and the second The connector 202 is also polygonal in shape so that the first connector 102 and the second connector 202 can slide back and forth within the first through hole 101 and the second through hole 201. For example, when the first connector 102 and the second connector 202 are square, the first through hole 101 and the second through hole 201 are also square in shape. It can be understood that the shapes of the first connector 102 and the second connector 202 can be substantially the same or different. For example, the first connector 102 is a 16-sided polygon and the second connector 202 is a cylinder.

[0097] In this embodiment, the first protrusion 1023 limits the first connector 102 to prevent it from rotating circumferentially within the first through hole 101. Furthermore, since the connection between the first connector 102 and the second connector 202 can be a snap-fit ​​connection, rotation of the first connector 102 may affect the snap-fit ​​between them, causing separation. Therefore, the first protrusion 1023 is provided on the first connector 102 to prevent rotation and ensure the stability of the snap-fit ​​between the first connector 102 and the second connector 202.

[0098] It is understood that the snap-fit ​​connection between the first connector 102 and the second connector 202 is the preferred solution, but magnetic or other connection methods that can achieve this technical solution can also be selected.

[0099] like Figure 20 As shown, in one embodiment, the first connecting part 1022 includes a U-shaped limiting member 10221 and a U-shaped limiting connecting rod 10222 connected to the U-shaped limiting member 10221. One end of the U-shaped limiting connecting rod 10222 away from the U-shaped limiting member 10221 is connected to the first connecting rod 102, so that the U-shaped limiting member 10221 and the first connecting member 102 are spaced at a certain distance, so as to fix the second connecting member 202.

[0100] One end of the second connector 202 is connected to the second steel wire 62 (the second steel wire 62 is the steel wire on the hand-held part 2, used to distinguish it from the first steel wire 61), and the other end is provided with a limiting ball head 204. A second spring 205 is sleeved on the second connector 202; the second through hole 201 is a stepped hole. At the connection between the limiting ball head 204 and the second connecting member 202, the open end of the U-shaped limiting member 10221 is engaged, so that the limiting ball head 204 is placed between the U-shaped limiting member 10221 and the first connecting member 102. When the limiting ball head 204 moves along the length direction of the second connecting member 202, the U-shaped limiting member 10221 prevents the limiting ball head 204 from disengaging from the first connecting rod 102. One end of the second spring 205 abuts against the second connecting member 202 or is sleeved on part of the second connecting member 202, and the other end abuts against the stepped platform 2011 of the second through hole, so that the second spring 205 returns to the second connecting member 202.

[0101] It should be noted that the shape of the U-shaped limiting member 10221 facilitates engagement with the limiting ball head 204. The U-shaped limiting member 10221 is connected to the first connecting member 102 via the U-shaped limiting connecting rod 10222. Specifically, one end of the U-shaped limiting connecting rod 10222 is connected to the arc-shaped area of ​​the U-shaped limiting member 10221, and the other end is connected to the first connecting member 102. The first connecting member 102 and the U-shaped limiting member 10221 are integrated into a whole through the U-shaped limiting connecting rod 10222, and a certain distance is left between the U-shaped limiting member 10221 and the first connecting member 102. The space between them is used to place the limiting ball head 204.

[0102] It should also be noted that the second through hole 201 is a stepped hole, and a second spring 205 is fitted onto the second connector 202. The structure here is the same as the mating structure between the first through hole 101, the first spring 104, and the first connector 102, and will not be described again. The function of the second spring 205 is to reset the second connector 202.

[0103] The limiting ball head 204 and the second connecting member 202 are integrated. When the second connecting member 202 is engaged with the first connecting member 102, the connection part of the limiting ball head 204 and the second connecting member 202 is engaged with the U-shaped limiting member 10221. The limiting ball head 204 is placed between the first connecting member 102 and the U-shaped limiting member 10221. After assembly, the limiting ball head 204 can always be engaged with the U-shaped limiting member 10221 while ensuring that the first connecting member 102 does not rotate, thus ensuring the connection relationship between the first connecting member 102 and the second connecting member 202.

[0104] In this embodiment, a U-shaped limiting member 10221 is provided on the first connecting member 102, and a limiting ball head 204 is provided on the second connecting member 202. The assembly between the first connecting member 102 and the second connecting member 202 is realized through the snap-fit ​​between the limiting ball head 204 and the U-shaped limiting member 10221. When the discarding part 1 and the handheld part 2 are mutually constrained and connected, the first connecting member 102 and the second connecting member 202 are snap-fitted in the above manner to ensure that when the operating handwheel 3 provided on the handheld part 2 is adjusted, the first steel wire 61 on the discarding part 1 can move accordingly, thereby adjusting the observation lens 4 on the discarding part 1.

[0105] In one embodiment, the end face adjacent to the discard part 1 and the handheld part 2 is provided with a groove protruding from the discard part 1. The two ends of the groove are respectively provided with a first groove position 1051 and a second groove position 1052. The end face of the first through hole 101 is placed in the first groove position 1051 so that the U-shaped limiting member 10221 is built into the first groove and is placed horizontally, with a certain distance between it and the bottom of the groove. During the mutual constraint connection between the discard part 1 and the handheld part 2, the limiting ball head 204 is inserted into the second groove position 1052 and the discard part 1 is rotated so that the limiting ball head 204 moves along the groove to the first groove position 1051, and the U-shaped limiting member 10221 limits the connection of the limiting ball head 204.

[0106] It should be noted that the end face of the disposal part 1 protrudes from the end face, while the end face of the handheld part 2 is recessed from the end face. When the handheld part 2 and the disposal part 1 are mutually constrained and connected, the part of the disposal part 1 that protrudes from the end face is placed in the recessed position of the end face of the handheld part 2. Furthermore, the edge of the part that protrudes from the end face of the disposal part 1 is provided with at least one arc-shaped protrusion 106 along the outer wall of the protrusion. The inner wall of the recessed part of the end face of the handheld part 2 is provided with a limiting groove 206. After the arc-shaped protrusion 106 is partially inserted into the limiting groove 206, when the disposal part 1 is rotated, the limiting groove 206 limits the arc-shaped protrusion 106, preventing the disposal part 1 from detaching from the handheld part 2.

[0107] The above method enables the discarding part 1 and the holding part 2 to be mutually constrained and connected.

[0108] It should also be noted that during the process of the disposal part 1 and the handheld part 2 fitting together and preparing to constrain each other, the limiting ball head 204 is inserted into the second groove position 1052 of the groove. While rotating the disposal part 1, the limiting ball head 204 moves towards the first groove position 1051. When the disposal part 1 and the handheld part 2 complete the mutual constraint, the limiting ball head 204 can be placed exactly at the first groove position 1051. The limiting ball head 204 can enter the gap formed between the U-shaped limiting member 10221 and the first connecting member 102 through the gap between the bottom of the groove and the U-shaped limiting member 10221, thus completing the U-shaped limiting member 10221 at the first groove position 1051 to limit the limiting ball head 204.

[0109] In this embodiment, the first connector 102 and the second connector 202 can be mutually constrained to form a whole through the above method.

[0110] In one embodiment, the second steel wire 62 is provided with a second steel wire adjustment mechanism 207 for adjusting the tension length of the second steel wire 62. The second steel wire adjustment mechanism 207 includes a positioning block 2071 and a positioning groove 2072. One end 61 of the second steel wire is connected to the positioning block 2071, and the positioning block 2071 is connected to the end of the positioning groove 2072. The end of the positioning groove 2072 away from the transmission chain 81 connected thereto has a notch extending from the top of the positioning groove 2072 to the bottom of the positioning groove 2072, so that the positioning block 2071 is placed inside the positioning groove 2072. In this case, the connection between the positioning block 2071 and the second steel wire 62 can pass through the notch; the positioning groove 2072 has at least two adjustment areas 2073 along the length of the second steel wire 62, so that when the positioning block 2071 is set in different adjustment areas 2073, the distance between the positioning groove 2072 and the second connector 202 can be adjusted to keep the second steel wire 62 taut, and to prevent the second steel wire 62 from deforming or other parts from becoming loose after the handheld part 2 has been working for a period of time, thus ensuring the accuracy of the adjustment angle of the observation lens 4 is low.

[0111] It should be noted that one end of the second steel wire 62 is fixedly connected to the positioning block 2071; the positioning block 2071 is connected to the end of the positioning groove 2072; and the other end of the second steel wire 62 is connected to one end of the second connecting piece 202.

[0112] It is understood that the positioning block 2071 can be a rectangular structure, with at least one positioning protrusion 2074 provided on each of the two opposite sidewalls of the rectangular positioning block 2071. The second steel wire 62 is connected to the adjacent sidewall of the sidewall with the positioning protrusion 2074. The positioning protrusion 2074 serves to limit the positioning block 2071 and prevent the positioning block 2071 from moving in the length direction of the second steel wire 62.

[0113] The positioning groove 2072 can be rectangular. The inner walls of the two long sides of the rectangular positioning groove 2072 are provided with adjustment areas 2073 extending from the top to the bottom of the positioning groove 2072. There are at least two adjustment areas 2073. Preferably, the adjustment areas 2073 are grooves and are arranged opposite to each other. One short side of the positioning groove 2072 is open to allow the second steel wire 62 to pass through; the outer wall of the other short side of the positioning groove 2072 is connected to the transmission chain 81 driven by the operating handwheel 3.

[0114] In this embodiment, the second steel wire 62 and the transmission chain 81 driven by the operating handwheel 3 are integrated into a whole by the second steel wire adjustment mechanism 207. If the overall length of the steel wire formed by the first steel wire 61 and the second steel wire 62 is too long, it is not conducive to controlling the observation angle of the observation lens 4. The tension of the second steel wire 62 can be adjusted by the second steel wire adjustment mechanism 207, thereby completing the adjustment of the overall tension of the steel wire and facilitating the movement of the observation lens 4. Specifically, in the process of the second steel wire 62 forming a whole by the operating handwheel 3, the positioning block 2071 is moved from the top of the positioning groove 2072 to the bottom of the positioning groove 2072. When the positioning protrusion 2074 provided on the opposite side wall of the positioning block 2071 moves from the top of the groove 2072 to the bottom of the groove, the positioning protrusion 2074 can slide along one end of the groove (i.e., the adjustment area 2073) to the other end, and the groove restricts the positioning protrusion 2074 from moving along the length direction of the second steel wire 62 within the positioning groove 2072. The above structure completes the overall connection between the second steel wire 62 and the transmission chain 81 driven by the operating handwheel 3. If you want to adjust the tension of the second steel wire 62, you can place the positioning protrusion 2074 in another adjustment area 2073 of the positioning groove 2072 as described above.

[0115] like Figure 1 As shown in the figure, the dotted line represents the bending portion 6 bending in one direction and then in another direction at a certain angle. In this embodiment, by setting a second steel wire adjustment mechanism 207, the tension of the steel wire can be adjusted. By controlling the bending portion 6, the observation angle of the observation lens 4 can be adjusted, thereby improving the accuracy of the observation angle of the observation lens 4.

[0116] like Figure 4-6 As shown, in one embodiment, a disposable connection structure further includes a wire guide mechanism 7. The wire guide mechanism 7 includes at least a first rod 71, a second rod 72, a third rod 73, and two opposing support frames 74. The first rod 71 and the second rod 72 are spaced apart to allow the second wire 62 to travel between the first rod 71 and the second rod 72. The third rod 73 is spaced apart from the first rod 71 along the direction in which the second wire 62 travels. The two ends of the first rod 71, the second rod 72, and the third rod 73 are respectively connected to the two support frames 74. The wire guide mechanism 7 is fixed inside the handheld part 2.

[0117] Preferably, the two support frames 74 are arranged in a right-angled triangle, with the right-angled region of the triangle connecting to the end of the first rod 71, and the two acute-angled regions connecting to the second rod 72 and the third rod 73 respectively. Alternatively, based on this structure and function, the support frames 74 can be designed as a right-angled trapezoid or an L-shape. When the support frames 74 are fixed to the inner wall of the handle 2, the third rod 73 is spaced a certain distance from the inner wall of the handle 2 to allow the second steel wire 62 to travel between the inner wall and the third rod 73. Furthermore, the second rod 72 is spaced from the inner wall by the first rod 71.

[0118] The support frame 74 can also be designed as an integral structure with the partition 82.

[0119] The first rod 71, the second rod 72, and the third rod 73 are used to space the second steel wires 62 so that the multiple second steel wires 62 do not interfere with each other during reciprocating motion, and can reciprocate in their respective directions of travel. It is understood that, in order to reduce the friction generated when the second steel wires 62 move on the first rod 71, the second rod 72, and the third rod 73, the first rod 71, the second rod 72, and the third rod 73 can all be set as rollers, and the second steel wires 62 reciprocate in the rolling direction of the rollers, so as to reduce the friction between the second steel wires 62 and the first rod 71, the second rod 72, and the third rod 73, and improve the service life of the second steel wires 62, the first rod 71, the second rod 72, and the third rod 73.

[0120] Specifically, when there are four second wire adjustment mechanisms 207, the four second wire adjustment mechanisms 207 are divided into two groups, namely the first group and the second group. The two second wire adjustment mechanisms 207 in each group are connected by a transmission chain 81. Furthermore, the two positioning grooves 2072 are respectively connected to the two ends of the transmission chain 81. The transmission chain 81 drives the two positioning grooves 2072 connected to it to move back and forth along the length direction of the second wire 62.

[0121] Taking a geographical direction as an example, the positioning blocks 2071 of the two second steel wire adjustment mechanisms 207 in the first group are respectively connected to a second steel wire 62 that passes between the first rod 71 and the second rod 72, and travels on one side of the third rod 73. The two second steel wires 62 are respectively located in the east-west direction.

[0122] The positioning blocks 2071 of the two second wire adjustment mechanisms 207 in the second group are respectively connected to a second wire 62 that passes around the first rod 71 or the second rod 72 (when the first rod 71 is in the right-angle region, the second wire 62 passes around the second rod 72), and then passes through the opposite sides of the third rod 73. The two second wires 62 are respectively located in the north-south direction.

[0123] The first rod 71, the second rod 72 and the third rod 73 are used to position the four second steel wires 62 in the four directions of east, south, west and north, so that the four second steel wires 62 can be connected to the second connectors 202 that can be connected to the four directions respectively.

[0124] To further restrict the four second steel wires 62 to reciprocate only along their axial direction and not in the radial direction, a partition 82 is provided between the two transmission chains 81 so that the two transmission chains 81 are placed on both sides of the partition 82 and connected only in the area controlling the rotation of the two transmission chains 81, so that the operation of the two transmission chains 81 can be controlled through the connected area.

[0125] A guide block is provided on each side of the partition 82. For easy distinction, the two guide blocks can be named the first guide block 83 and the second guide block 84, respectively. The function of the guide blocks is to limit the movement direction of the second steel wire 62. Specifically, the first guide block 83 can be an isosceles trapezoidal structure. The two longer sides of the isosceles trapezoid are used to separate the second steel wire 62 in the east-west direction, so that the second steel wire 62, after detaching from the first guide block 83, can maintain the east-west direction. The second guide block 84 can be an isosceles triangle. The second steel wire 62 in the north-south direction moves along the isosceles side of the isosceles triangle, so that when detaching from the second guide block 84, it moves along the vertex direction of the second guide block 84, and after passing around the second rod 72, forms the second steel wire 62 in the north-south direction.

[0126] By setting two guide blocks, the four second steel wires 62 can be kept moving in a specified direction under the drive of the transmission chain 81, ensuring the reliability and stability of the reciprocating movement of the second connecting piece 202.

[0127] like Figure 7 and Figure 8 As shown, it can be understood that, in addition to the above-described method, the structure of the wire guide mechanism 7 may also include a spring tube fixing frame 75 and a spring tube 76 that matches the spring tube fixing frame 75. The spring tube fixing frame 75 has multiple through holes for fixing one end of the spring tube 76, and the other end of the spring tube 76 abuts against the end face of the second through hole 201, using the spring tube 76 as a channel for the second wire 62 to travel. The through holes can be distributed in the four directions (north, south, east, west) on the spring tube fixing frame 75 so that the four second wires 62 pass through the four through holes and the spring tubes 76 fixed therein, as described above.

[0128] The distribution of the four second steel wires 62 can be achieved by setting the spring tube fixing bracket 75. It can also be understood that the number of spring tube fixing brackets 75 can be two or more. The through holes on each spring tube fixing bracket 75 can be set according to the walking direction of the second steel wire 62. A spring tube 76 is sleeved on the second steel wire 62. The second steel wire 62 passes through the spring tube fixing bracket 75 and the spring tube 76 in sequence and connects with the second connector 202.

[0129] Furthermore, the second guide block 84 can be omitted, and a guide shell that serves as a guide is fitted outside the transmission chain 81. The transmission chain 81 moves in a set direction inside the guide shell, thereby achieving the same function as the second guide block 84.

[0130] In one embodiment, the reciprocating movement of the transmission chain 81 can drive the second connector 202 to move accordingly. The second connector 202 drives the first connector 102 connected to it to move, thereby adjusting the maximum movement angle of the observation lens 4 in a certain direction. However, if the observation lens 4 exceeds the maximum movement angle, it may affect the observation effect and the service life of the observation lens. Furthermore, excessive reciprocating movement of the second connector 202 will also affect the deformation of the second spring 205 on the second connector 202. Therefore, it is necessary to limit the movement range of the second connector 202.

[0131] The specific structure that limits the movement range of the second connector 202 is as follows:

[0132] A one-time connection structure includes a limiting mechanism 9 and a positioning groove protrusion 2075 disposed on the outer wall of the positioning groove 2072.

[0133] The limiting mechanism 9 includes a limiting block 91, a limiting block adjusting screw 92, and a limiting block fixing frame 93.

[0134] The limiting block fixing frame 93 has a U-shaped structure, and all three sides of the U-shaped structure are fixedly connected to the partition plate 82.

[0135] The limit block adjusting screw 92 has one end rotatably connected to the limit block fixing frame 93, and the other end passes through the limit block fixing frame 93 and is rotatably connected to it. The end passing through the limit block fixing frame 93 can be provided with a slotted or Phillips head structure so that the limit block adjusting screw 92 can be rotated by a slotted or Phillips head screwdriver.

[0136] The limiting block 91 is set in the area enclosed by the limiting block fixing frame 93 and is screwed to the limiting block adjusting screw 92. The limiting block 91 protrudes out of the limiting block fixing frame 93, and the protruding part forms the limiting area.

[0137] The positioning groove protrusion 2075 on the outer wall of the positioning groove 2072 is used to cooperate with the limiting area formed by the protruding part of the limiting block 91. The limiting area can prevent the positioning groove 2072 from continuing to move.

[0138] When the transmission chain 81 moves to the set maximum position, the positioning groove protrusion 2075 on the outer wall of the positioning groove 2072 can abut against the limiting area formed by the protruding part of the limiting block 91, and the limiting area can prevent the transmission chain 81 from continuing to move.

[0139] It should be noted that the limiting block 91 and the limiting block adjusting screw 92 are threadedly connected. When the limiting block adjusting screw 92 is rotated, the limiting block 91 cannot rotate because it abuts against the partition plate 82. This causes the limiting block 91 to move axially along the rotating limiting block adjusting screw 92. The movement of the limiting block 91 changes the stroke of the positioning groove 2072, thereby enabling the adjustment of the movement range of the second connecting member 202.

[0140] In this embodiment, the movement range of the positioning groove 2072 can be limited by changing the relative position of the limiting block 91 and the limiting block adjusting screw 92, thereby limiting the movement range of the second connecting member 202, so as to adjust the maximum movement angle of the observation lens 4 in a certain direction.

[0141] In one embodiment, the discarding part 1 is provided with a water vapor channel and a suction device channel. The water vapor channel is used as an example of two channels.

[0142] One water-air channel is used for water intake, and the other water-air channel is used for air intake. The disposal section 1 is also equipped with a suction device channel. This suction device channel is divided into two channels inside the disposal section 1 through a T-junction. One channel becomes the suction channel, and the other is fixedly connected to the inlet of the device channel.

[0143] The end of the disposal unit 1 is provided with a connecting hole 87 for a water-air channel and a suction channel, as well as an instrument channel inlet 100. Each connecting hole 87 is connected to a flexible hose. The water-air channel is connected to a water-air channel hose 85 through the connecting hole 87, and the suction channel is connected to a suction channel hose 86 through the connecting hole 87. Both the water-air channel hose 85 and the suction channel hose 86 are provided with control switches 88 for controlling the connection and disconnection of the hoses. The control switches 88 are located in the groove of the handheld part 2. At the same time, the water-air channel and the suction channel can be provided with quick-connect interfaces at the connecting holes 87 on the end face of the disposal unit 1, and then connected to the control switches 88 using a hose with a corresponding quick-connect interface.

[0144] This embodiment also provides a disposable endoscope, which has a disposable connection structure as described above.

[0145] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A one-time connection structure, characterized in that, include: The discarding part has a first through hole that passes through the discarding part and a first optoelectronic integrated connection part for connecting optical fiber and video signal line. The first through hole has a first connector that can reciprocate within the first through hole. The handheld part has a plurality of second through holes and a second optoelectronic integrated connection part for connecting the optical fiber and the video signal line. The second through holes have a second connector that can reciprocate within the second through holes. The number of the second connectors is the same as the number of the first connectors. When the handheld part and the discarding part are mutually constrained and connected, the ends of the first connector and the second connector are correspondingly connected, and can reciprocate along the length direction of the perforation within the perforation space after the first perforation and the second perforation are connected. Furthermore, the first optoelectronic integrated connection part and the second optoelectronic integrated connection part are docked and connected, so that the first optoelectronic integrated connection part and the second optoelectronic integrated connection part can transmit video signals and light to each other. The first connector includes a first connecting rod and a first connecting part. One end of the first connecting rod is connected to the end of the first steel wire, and the other end is provided with the first connecting part. The first connecting part is connected to the second connector. The outer diameter of the end of the first connecting rod connected to the first steel wire is smaller than that of the other end of the first connecting rod. A first spring is sleeved on the first connecting rod, and the inner diameter of the first spring is smaller than the maximum outer diameter of the first connecting rod. The first through hole is a stepped hole. One end of the first spring abuts against the stepped surface of the first through hole, and the other end is in contact with the end of the first connecting rod with the larger outer diameter, so that when the first connecting rod reciprocates in the first through hole, the first spring is used to reset the first connecting rod. A first groove is formed on the wall of the hole with the larger inner diameter of the first through hole, extending along the length of the first through hole. A first protrusion is formed on the outer wall of the first connecting rod, which mates with the first groove. When the first connecting rod reciprocates within the first through hole, the first protrusion is positioned within the first sliding groove and moves along the first sliding groove to prevent the first connecting rod from rotating axially during reciprocating movement. The first connecting part includes a U-shaped limiting member and a U-shaped limiting connecting rod connected to the U-shaped limiting member. The end of the U-shaped limiting connecting rod away from the U-shaped limiting member is connected to the first connecting rod so that the U-shaped limiting member and the first connecting member are spaced at a certain distance, so as to fix the second connecting member.

2. The disposable connection structure according to claim 1, characterized by One end of the second connector is connected to the second steel wire, and the other end is provided with a limiting ball head. A second spring is fitted onto the second connector. The second through hole is a stepped hole. The limiting ball head is engaged with the second connecting member at the opening end of the U-shaped limiting member, so that the limiting ball head is positioned between the U-shaped limiting member and the first connecting member. When the limiting ball head moves along the length direction of the second connecting member, the U-shaped limiting member prevents the limiting ball head from disengaging from the first connecting rod. One end of the second spring abuts against the second connecting member or is sleeved on part of the second connecting member, and the other end abuts against the stepped surface of the second through hole, so that the second spring returns to the second connecting member.

3. The disposable connection structure according to claim 2, characterized by The end face of the discard portion adjacent to the handle portion is provided with a groove protruding from the handle portion. Within the groove, opposite ends are respectively provided with a first groove position and a second groove position. The end face of the first through hole is positioned at the first groove position, so that the U-shaped limiting member is positioned at the first groove position. During the mutual constraint connection between the discard part and the handheld part, the limiting ball head is inserted into the second groove position, and the discard part is rotated so that the limiting ball head moves along the groove to the first groove position, and the U-shaped limiting member limits the connection of the limiting ball head; when the discard part is rotated in the opposite direction, the U-shaped limiting member releases the limiting connection of the limiting ball head.

4. The disposable connection structure according to claim 2, wherein The second steel wire is provided with a second steel wire adjusting mechanism for adjusting the tension of the second steel wire. The second steel wire adjusting mechanism includes a positioning block and a positioning groove; wherein the second steel wire is connected to the positioning block, and the positioning groove is connected to a drive chain. The drive chain rotates to move the positioning groove along the travel direction of the drive chain. The end of the positioning groove away from the transmission chain it is connected to has a notch extending from the top of the positioning groove to the bottom of the positioning groove, so that when the positioning block is placed in the positioning groove, the connection part between the positioning block and the second steel wire can pass through the notch; the positioning groove is provided with at least two adjustment areas along the length of the second steel wire, so that when the positioning block is placed in different adjustment areas, the tension of the second steel wire between the positioning groove and the second connector can be adjusted.

5. The disposable connection structure according to claim 4, wherein The adjustment area includes grooves extending from the top of the positioning groove to the bottom of the positioning groove on two opposite sidewalls of the positioning groove, and positioning protrusions that cooperate with the grooves on opposite sidewalls of the positioning block; wherein, when the positioning block moves from the top to the bottom of the positioning groove, the positioning protrusions can slide along one end of the groove to the other end, and the grooves restrict the positioning protrusions from moving within the positioning groove along the length direction of the second steel wire.

6. The disposable connection structure according to claim 2, wherein It also includes a wire guide mechanism, which is fixed to the inner wall of the hand grip. The wire guide structure includes at least a first rod, a second rod, and a third rod, and two opposing support frames. The first rod and the second rod are spaced a certain distance apart to allow the second wire to travel between the first rod and the second rod. The third rod is spaced apart from the first rod along the direction in which the second wire travels. The two ends of the first rod, the second rod, and the third rod are respectively connected to the two support frames; or The wire guiding mechanism includes a spring tube fixing frame and a spring tube. The spring tube fixing frame is used to fix one end of the spring tube, which is hollow inside and is used to guide the direction of the second wire. The other end of the spring tube is fixed to the second through hole end face.

7. The disposable connection structure according to claim 4, wherein It also includes a limiting mechanism disposed within the handheld part. The limiting mechanism comprises a limiting block, a limiting block adjusting screw, and a limiting block fixing frame. The limiting block fixing frame is disposed within the handheld part. The limiting block adjusting screw is rotatably connected to the limiting block fixing frame, and the limiting block is threadedly connected to the limiting block adjusting screw. The outer wall of the positioning groove is provided with a positioning groove protrusion, which protrudes out of the positioning groove; when the transmission chain moves, the movement distance of the positioning groove protrusion is limited by the limiting block, thereby limiting the maximum movement distance of the transmission chain.

8. A disposable endoscope characterized by, Includes a one-time connection structure as described in any one of claims 1-7.

Images