An integrated double-helix snake bone structure

Abstract

An integrated double-helix snake-bone structure includes a press-fit airbag. An expansion mechanism is provided on the surface of the press-fit airbag. A double-helix snake-bone assembly is provided on the surface of the expansion mechanism. The double-helix snake-bone assembly includes a rear end section, which is movably mounted on the surface of the expansion mechanism. A first connecting hole is provided on the surface of the rear end section, and the first connecting holes are evenly distributed on the surface of the rear end section. A first helical bone member is fixedly mounted on the surface of the rear end section. A connector is fixedly mounted at one end of the first helical bone member. A second connecting hole is provided on the surface of the first helical bone member, and the second connecting hole is adapted to the first connecting hole and is evenly distributed on the surface of the first helical bone member. A first adjusting traction rope is movably mounted on the surface of the first helical bone member. This invention's two sets of adjusting parts do not interfere with each other during angle changes, while also making angle adjustment more diverse and adaptable to different angles of movement, thus improving the adaptability of the device.

Description

Technical Field

[0001] This invention belongs to the field of snake bone structure technology and relates to an integrated double helix snake bone structure. Background Technology

[0002] In the medical field, to achieve non-invasive or minimally invasive examination and diagnosis of internal organs and cavities, an instrument is needed that can flexibly penetrate deep into the body while providing precise control and imaging. Traditional rigid endoscopes are difficult to reach or operate on in some complex human structures, while endoscopes with a serpentine structure can better adapt to the curves and narrow passages of the human body, such as the digestive tract, respiratory tract, and blood vessels, thus meeting the needs of doctors to conduct detailed observation and diagnosis of these areas.

[0003] Chinese Patent Publication No. CN221331123U discloses an endoscopic snake-bone structure, including a first bone segment and a second bone segment. The first bone segment has a rotating part at one end, and the second bone segment has a rotating groove at one end. The rotating part of the first bone segment and the rotating groove of the second bone segment are conical and engage with each other. To address the issue of poor stability, a first hook and a third hook engage with each other, and a second hook and a fourth hook engage with each other. This effectively prevents the rotating part from detaching from the rotating groove, increasing the stability of the first and second bone segments. This method transmits tensile force among several snake-bone units. However, it still results in an excessive number of parts, leading to a low safety factor and high manufacturing cost. Summary of the Invention

[0004] To overcome the shortcomings of existing snake bone structures, such as low safety factor and high manufacturing cost, this invention provides an integrated double helix snake bone structure that improves safety factor and reduces manufacturing cost. The two sets of adjustment parts do not interfere with each other when the angle changes, while making the angle adjustment more diverse and adaptable to different angles of movement, thus improving the adaptability of the device.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An integrated double-helix snake-bone structure includes a press-fit airbag. The surface of the press-fit airbag is provided with an expansion mechanism. The surface of the expansion mechanism is provided with a double-helix snake-bone assembly. The double-helix snake-bone assembly includes a rear end section, which is movably mounted on the surface of the expansion mechanism. The surface of the rear end section is provided with a first connecting hole, which is evenly distributed on the surface of the rear end section. A first helical bone member is fixedly mounted on the surface of the rear end section. One end of the first helical bone member is fixedly mounted with a connector. The surface of the first helical bone member is provided with a second connecting hole, which is adapted to the first connecting hole and is evenly distributed on the surface of the first helical bone member. A first adjusting traction rope is movably mounted on the surface of the first helical bone member.

[0007] Furthermore, there are eight sets of both the first and second connecting holes, four sets of the first adjusting traction rope, the first adjusting traction rope is evenly distributed on the surface of the second connecting hole, one end of the first adjusting traction rope is fixedly installed on the surface of the connector, and the connector is movably installed on the surface of the rear end section and extends to the outside of the rear end section.

[0008] Furthermore, a second helical joint is fixedly installed on the surface of the connector, a front end section is fixedly installed at one end of the second helical joint, and a third connecting hole is provided on the surface of the second helical joint. There are four sets of the third connecting holes, and the third connecting holes are evenly distributed on the surface of the second helical joint.

[0009] Preferably, a second adjusting traction rope is movably mounted on the surface of the third connecting hole. Four sets of the second adjusting traction rope are provided. The second adjusting traction ropes are evenly distributed on the surface of the third connecting hole. One end of the second adjusting traction rope is fixedly mounted on the surface of the front end section, and the second adjusting traction rope is movably mounted on the surface of the rear end section and extends to the outside of the rear end section.

[0010] Furthermore, the expansion mechanism includes a lower collar, which is movably mounted on the surface of the rear end section. A connecting tube is fixedly mounted on the surface of the lower collar, one end of which is fixedly mounted on the surface of the pressing airbag. An isolation sleeve is fixedly mounted on the surface of the lower collar, and an upper collar is fixedly mounted on one end of the isolation sleeve. The upper collar is movably mounted on the surface of the front end section, and an annular airbag is fixedly mounted on the surface of the isolation sleeve. The annular airbag is adapted to the connecting tube.

[0011] Preferably, the lower and upper collars are provided with grooves inside, and there are two sets of grooves symmetrically distributed on the surfaces of the lower and upper collars. A stop block is provided on the surface of each groove. A first spring is fixedly installed inside each groove. A limiting plate is fixedly installed at one end of the first spring. A fixing rod is fixedly installed on the surface of the limiting plate. The fixing rod is movably installed inside the groove. A pull block is fixedly installed at one end of the fixing rod. The pull block is movably installed on the surfaces of the lower and upper collars. A locking block is fixedly installed on the surface of the limiting plate. A second spring is sleeved inside the locking block. A movable bead is fixedly installed at one end of the second spring.

[0012] Preferably, the expansion mechanism further includes a slot, which is disposed on the surface of the rear end section and the front end section. The slot is adapted to the card block, and the surface of the slot has symmetrically distributed card holes, which are adapted to the movable ball.

[0013] In this invention, a rear end section, a first spiral joint, a connector, a second spiral joint, a front end section, a first adjusting traction rope, a second adjusting traction rope, a first connecting hole, a second connecting hole, and a third connecting hole are used in conjunction. The first spiral joint connects the connector to the rear end section to form a first adjusting part, and the second spiral joint connects the connector to the front end section to form a second adjusting part. At this time, four sets of first adjusting traction ropes pass through the second connecting holes, pulling the first adjusting traction ropes extending from the surface of the rear end section, causing the first adjusting traction ropes to move within the second connecting holes on the surface of the first spiral joint and the first connecting holes on the surface of the rear end section. This allows the first spiral joint to be adjusted up, down, left, and right. Similarly, four sets of second adjusting traction ropes pass through the third connecting holes, pulling the second adjusting traction ropes extending from the surface of the rear end section, causing the second adjusting traction ropes to move within the first connecting holes, the second connecting holes, and the third connecting holes. It can pull and drive the first spiral bone segment to adjust the angle up, down, left and right. The two sets of adjustment parts will not interfere with each other when the angle changes, making the angle adjustment more diverse and adaptable to different angles of movement. Furthermore, through the first and second spiral bone segments, the snake bone structure parts are simplified, avoiding mechanical jamming caused by multiple snake bones, and the toughness is greatly improved, avoiding the possibility of damage and improving the adaptability of the device.

[0014] The system employs a combination of a lower collar, an isolation sleeve, an upper collar, an annular airbag, a connecting tube, a locking block, a groove, a first spring, a stop block, a limiting plate, a second spring, a movable ball, a slot, a locking hole, a pull block, and a fixing rod. By aligning the lower collar with the rear end section and the upper collar with the front end section, when the locking block contacts the rear and front ends, it retracts into the groove, compressing the first spring. When it reaches the slot on the surface of the rear and front ends, the first spring rebounds, pushing the locking block into the slot. The limiting plate contacts the stop block, limiting the locking block. When the movable ball contacts the slot, it retracts inward, squeezing the second spring until it contacts the locking hole, at which point the second spring rebounds, pushing... The movable bead engages with the locking hole for further fixation. At this time, the isolation sleeve is fitted onto the surface of the double helix snake bone assembly, preventing injury to the patient when adjusting the angle of the double helix snake bone assembly, and also preventing foreign objects from getting stuck in the double helix snake bone assembly and causing jamming. When it is necessary to advance the device forward, in order to avoid injury to the patient, the airbag is squeezed and pressed, so that gas is inflated through the connecting tube to expand the channel and facilitate the advancement of the device. After use, simply pull the pull block to pull the limiting plate, so that the fixing rod squeezes the first spring and the locking block disengages from the slot, and the expansion mechanism can be disassembled, which improves the adaptability of the device.

[0015] The main benefits of this invention are: improved adaptability of the device, increased safety factor, and reduced manufacturing cost. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention from an axial view perspective;

[0018] Figure 3 This is a schematic diagram of the structure of the double helix snake bone assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the expansion mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the card block of this utility model.

[0021] In the diagram: 1. Pressing airbag; 2. Double helical snake bone assembly; 201. Rear end section; 202. First helical bone section; 203. Connector; 204. Second helical bone section; 205. Front end section; 206. First adjusting traction rope; 207. Second adjusting traction rope; 208. First connecting hole; 209. Second connecting hole; 210. Third connecting hole; 3. Expansion mechanism; 301. Lower end collar; 302. Isolation sleeve; 303. Upper end collar; 304. Annular airbag; 305. Connecting tube; 306. Locking block; 307. Groove; 308. First spring; 309. Stop block; 310. Limiting plate; 311. Second spring; 312. Movable ball; 313. Slot; 314. Locking hole; 315. Pull block; 316. Fixing rod. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] Reference Figures 1-5An integrated double-helix snake-bone structure includes a press airbag 1. An expansion mechanism 3 is provided on the surface of the press airbag 1. A double-helix snake-bone assembly 2 is provided on the surface of the expansion mechanism 3. The double-helix snake-bone assembly 2 includes a rear end section 201, which is movably mounted on the surface of the expansion mechanism 3. A first connecting hole 208 is provided on the surface of the rear end section 201, and the first connecting holes 208 are evenly distributed on the surface of the rear end section 201. A first spiral bone segment 202 is fixedly mounted on the surface of the rear end section 201. A connector 203 is fixedly mounted at one end of the first spiral bone segment 202. A second connecting hole 209 is provided on the surface of the first spiral bone segment 202, and the second connecting hole 209 is adapted to the first connecting hole 208. Eight sets of second connecting holes 209 are provided, and they are evenly distributed on the surface of the first spiral bone segment 202. Four sets of first adjusting traction ropes 206 are movably mounted on the surface of the first spiral bone segment 202. 6 are evenly distributed on the surface of the second connecting hole 209. One end of the first adjusting traction rope 206 is fixedly installed on the surface of the connector 203. The connector 203 is movably installed on the surface of the rear end section 201 and extends to the outside of the rear end section 201. The surface of the connector 203 is fixedly installed with a second spiral bone section 204. One end of the second spiral bone section 204 is fixedly installed with a front end section 205. The surface of the second spiral bone section 204 is provided with a third connecting hole 210. There are four sets of third connecting holes 210. The third connecting holes 210 are evenly distributed on the surface of the second spiral bone section 204. The surface of the third connecting hole 210 is movably installed with a second adjusting traction rope 207. There are four sets of second adjusting traction ropes 207. The second adjusting traction ropes 207 are evenly distributed on the surface of the third connecting hole 210. One end of the second adjusting traction rope 207 is fixedly installed on the surface of the front end section 205. The second adjusting traction rope 207 is movably installed on the surface of the rear end section 201 and extends to the outside of the rear end section 201.

[0024] In this embodiment, the first helical joint 202 connects the connector 203 to the rear end section 201 to form a first adjustment part, and the second helical joint 204 connects the connector 203 to the front end section 205 to form a second adjustment part. At this time, four sets of first adjustment traction ropes 206 pass through the second connecting hole 209, pulling the first adjustment traction ropes 206 extending out of the surface of the rear end section 201, so that the first adjustment traction ropes 206 move within the second connecting hole 209 on the surface of the first helical joint 202 and the first connecting hole 208 on the surface of the rear end section 201, thereby pulling and driving the first helical joint 202 to adjust its angle up, down, left, and right. Similarly, four sets of second adjustment traction ropes 207 pass through the third connecting hole 210, pulling the second adjustment traction ropes 207 extending out of the surface of the rear end section 201, so that the second adjustment traction ropes 207 move within the first connecting hole 208, the second connecting hole 209, and the third connecting hole 210. The first spiral joint 202 can be pulled and driven to adjust its angle up, down, left, and right. The two sets of adjustment parts do not interfere with each other when the angle changes, making the angle adjustment more diverse and adaptable to different angles of movement. Furthermore, the first spiral joint 202 and the second spiral joint 204 simplify the snake bone structure parts, avoid mechanical jamming caused by multiple snake bones, and greatly improve the toughness, avoiding the possibility of damage and improving the adaptability of the device.

[0025] Preferably, the lower collar 301 and the upper collar 303 are provided with grooves 307 inside. There are two sets of grooves 307, which are symmetrically distributed on the surfaces of the lower collar 301 and the upper collar 303. A stop block 309 is provided on the surface of the groove 307. A first spring 308 is fixedly installed inside the groove 307. A limit plate 310 is fixedly installed at one end of the first spring 308. A fixing rod 316 is fixedly installed on the surface of the limit plate 310. The fixing rod 316 is movably installed inside the groove 307. One end of the fixing rod 316 is fixedly installed with... There is a pull block 315, which is movably installed on the surfaces of the lower end collar 301 and the upper end collar 303. A locking block 306 is fixedly installed on the surface of the limiting plate 310. A second spring 311 is sleeved inside the locking block 306. A movable bead 312 is fixedly installed at one end of the second spring 311. The expansion mechanism 3 also includes a slot 313, which is set on the surface of the rear end section 201 and the front end section 205. The slot 313 is adapted to the locking block 306. The surface of the slot 313 has symmetrically distributed locking holes 314, which are adapted to the movable bead 312.

[0026] In this embodiment, by aligning the lower collar 301 with the rear end section 201 and the upper collar 303 with the front end section 205, when the locking block 306 contacts the rear end section 201 and the front end section 205, the locking block 306 retracts into the groove 307, compressing the first spring 308. When it reaches the slot 313 on the surface of the rear end section 201 and the front end section 205, the first spring 308 rebounds and pushes the locking block 306 into the slot 313. The limiting plate 310 contacts the stop block 309 to limit the locking block 306. When the movable bead 312 contacts the slot 313, the movable bead 312 retracts inward to squeeze the second spring 311 until the movable bead 312 contacts the locking hole 314. The second spring 311 rebounds and pushes the movable bead 312 into the locking hole 314. The device is then secured by a snap-fit ​​mechanism. At this point, the isolation sleeve 302 is fitted onto the surface of the double helix snake bone assembly 2. This prevents injury to the patient when the double helix snake bone assembly 2 is adjusted, and also prevents foreign objects from getting stuck inside the double helix snake bone assembly 2 and causing jamming. When the device needs to be pushed forward, to avoid injury to the patient, the airbag 1 is squeezed and pressed, causing gas to be inflated through the connecting tube 305 to the annular airbag 304, thus expanding the channel and facilitating the advancement of the device. After use, simply pull the pull block 315, causing the fixing rod 316 to pull the limiting plate 310, which in turn compresses the first spring 308 and causes the locking block 306 to disengage from the locking groove 313, thus disassembling the expansion mechanism 3 and improving the adaptability of the device.

[0027] The working principle of the integrated double-helix snake bone structure in this embodiment is as follows: the first helical bone segment 202 connects the connector 203 to the rear end segment 201 to form a first adjustment part, and the second helical bone segment 204 connects the connector 203 to the front end segment 205 to form a second adjustment part. At this time, four sets of first adjustment traction ropes 206 pass through the second connecting hole 209, pulling the first adjustment traction ropes 206 extending from the surface of the rear end segment 201, so that the first adjustment traction ropes 206 move within the second connecting hole 209 on the surface of the first helical bone segment 202 and the first connecting hole 208 on the surface of the rear end segment 201, thereby pulling and driving the first helical bone segment 202 to adjust its angle up, down, left, and right. Similarly, four sets of second adjustment traction ropes 207 pass through the third connecting hole 210, pulling the second adjustment traction ropes 207 extending from the surface of the rear end segment 201, so that the second adjustment traction ropes 207 move within the first connecting hole 208, the second connecting hole 209, and the third connecting hole 210. This allows for traction and adjustment of the first spiral joint 202 in all directions. The two sets of adjustment parts do not interfere with each other during angle changes, making angle adjustment more versatile and adaptable to different angles. Furthermore, the first and second spiral joints 202 and 204 simplify the snake-bone structure, avoiding mechanical jamming caused by multiple snake-bone components and significantly improving toughness, reducing the possibility of damage. The lower collar 301 is aligned with the rear joint 201, and the upper collar 303 is aligned with the front joint 205. When the locking block 306 contacts the rear and front joints 201 and 205, it retracts into the groove 307, compressing the first spring 308. When it reaches the slot 313 on the surface of the rear and front joints 201 and 205, the first spring 308 rebounds, pushing the locking block 306 into the slot 313. The limiting plate 310 contacts the stop block 309 to limit the locking block 306. When the movable ball 312 contacts... When the movable bead 312 retracts inward to compress the second spring 311 in the slot 313, until the movable bead 312 contacts the slot 314. The second spring 311 rebounds and pushes the movable bead 312 into the slot 314 for further fixation. At this time, the isolation sleeve 302 is fitted onto the surface of the double helix snake bone assembly 2 to prevent injury to the patient when the double helix snake bone assembly 2 is adjusted, and also to prevent foreign objects from getting stuck in the double helix snake bone assembly 2 and causing jamming. When it is necessary to push the device forward, in order to avoid injury to the patient, the airbag 1 is squeezed and pressed, so that the gas passes through the connecting tube 305 to inflate the annular airbag 304, thereby expanding the channel and facilitating the advancement of the device. After use, simply pull the pull block 315 to pull the limiting plate 310 with the fixing rod 316, so that the fixing rod 316 compresses the first spring 308 and the slot 306 is disengaged from the slot 313, and the expansion mechanism 3 can be disassembled, which improves the adaptability of the device.

[0028] The embodiments described in this specification are merely examples of implementations of the inventive concept and are for illustrative purposes only. The scope of protection of this invention should not be considered limited to the specific forms described in these embodiments; rather, it extends to equivalent technical means conceived by those skilled in the art based on the inventive concept.

Claims

1. A one-piece double-helix snake bone structure, characterized in that, The device includes a compression airbag, the surface of which is provided with an expansion mechanism. The surface of the expansion mechanism is provided with a double-helix snake-bone assembly. The double-helix snake-bone assembly includes a rear end section, which is movably mounted on the surface of the expansion mechanism. The surface of the rear end section is provided with a first connecting hole, which is evenly distributed on the surface of the rear end section. A first helical bone member is fixedly mounted on the surface of the rear end section. A connector is fixedly mounted on one end of the first helical bone member. The surface of the first helical bone member is provided with a second connecting hole, which is adapted to the first connecting hole. The second connecting hole is evenly distributed on the surface of the first helical bone member. A first adjusting traction rope is movably mounted on the surface of the first helical bone member.

2. The integrated double-helix snake bone structure as described in claim 1, characterized in that, The first and second connecting holes are each provided with eight sets, the first adjusting traction rope is provided with four sets, the first adjusting traction rope is evenly distributed on the surface of the second connecting hole, one end of the first adjusting traction rope is fixedly installed on the surface of the connector, and the connector is movably installed on the surface of the rear end section and extends to the outside of the rear end section.

3. The integrated double-helix snake bone structure as described in claim 1 or 2, characterized in that, A second spiral joint is fixedly installed on the surface of the connector. A front end joint is fixedly installed at one end of the second spiral joint. A third connecting hole is provided on the surface of the second spiral joint. Four sets of the third connecting holes are provided and the third connecting holes are evenly distributed on the surface of the second spiral joint.

4. The integrated double-helix snake bone structure as described in claim 3, characterized in that, A second adjusting traction rope is movably mounted on the surface of the third connecting hole. Four sets of the second adjusting traction rope are provided. The second adjusting traction ropes are evenly distributed on the surface of the third connecting hole. One end of the second adjusting traction rope is fixedly mounted on the surface of the front end section. The second adjusting traction rope is movably mounted on the surface of the rear end section and extends to the outside of the rear end section.

5. A one-piece double-helix serpentine structure as described in claim 1 or 2, characterized in that, The expansion mechanism includes a lower collar, which is movably mounted on the surface of the rear end section. A connecting tube is fixedly mounted on the surface of the lower collar, one end of which is fixedly mounted on the surface of the pressing airbag. An isolation sleeve is fixedly mounted on the surface of the lower collar, and an upper collar is fixedly mounted on one end of the isolation sleeve. The upper collar is movably mounted on the surface of the front end section, and an annular airbag is fixedly mounted on the surface of the isolation sleeve. The annular airbag is adapted to the connecting tube.

6. The integrated double-helix snake bone structure as described in claim 5, characterized in that, The lower and upper collars are provided with grooves inside, and there are two sets of grooves symmetrically distributed on the surfaces of the lower and upper collars. A stop block is provided on the surface of the groove. A first spring is fixedly installed inside the groove. A limit plate is fixedly installed at one end of the first spring. A fixing rod is fixedly installed on the surface of the limit plate. The fixing rod is movably installed inside the groove. A pull block is fixedly installed at one end of the fixing rod. The pull block is movably installed on the surface of the lower and upper collars. A locking block is fixedly installed on the surface of the limit plate. A second spring is sleeved inside the locking block. A movable ball is fixedly installed at one end of the second spring.

7. The integrated double-helix snake bone structure as described in claim 6, characterized in that, The expansion mechanism also includes a slot, which is disposed on the surface of the rear end section and the front end section. The slot is adapted to the card block, and the surface of the slot has symmetrically distributed card holes, which are adapted to the movable ball.

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