An intestinal lumen support structure and delivery assembly, surgical instrument system

Abstract

This invention discloses an intestinal lumen support structure and delivery assembly, as well as a surgical instrument system, belonging to the field of minimally invasive medical device technology. It includes a head, a tail, and a cage that can extend along a direction perpendicular to the line connecting the head and tail, and in the opposite direction to this line, to support the intestinal lumen. The cage is connected to the head and tail at both ends, and extends continuously from head to tail. The intestinal lumen support structure can pass through conventional endoscopic instrument channels without modifying the endoscope, adapting to existing surgical procedures. It has high support strength and stable shape, providing reliable support even under perforation and full-thickness incision conditions, without relying on air inflation. After unfolding, it does not loosen or collapse, ensuring a safe and stable surgical process. It is retractable and retractable, allowing for minimally invasive procedures and reducing patient trauma. Its good flexibility allows it to pass smoothly through the curved colon, offering strong maneuverability and a wide range of applications.

Description

Technical Field

[0001] This invention belongs to the field of minimally invasive medical device technology, specifically relating to an intestinal support structure and delivery component, and a surgical instrument system. Background Technology

[0002] In minimally invasive colonoscopy, the colonic wall is prone to collapse due to abdominal pressure and intestinal peristalsis, leading to loss of surgical field and limited operating space, thus affecting surgical safety and efficiency. Clinically, insufflation to expand the intestinal lumen is routinely used; however, when perforation occurs in the intestinal wall or a full-thickness incision is made, rapid gas leakage makes it impossible to maintain effective lumen space. Furthermore, insufflation may cause complications such as gas embolism, postoperative abdominal distension, and carbon dioxide retention, indicating insufficient safety.

[0003] For example, the patent application publication text with publication number US20240115250A1 entitled "Apparatus and Method for Providing Volume in a Lumen" describes a frame structure formed by driving multiple flexible tubes with wires to support the intestinal lumen. However, this solution is formed by multiple tubes, and there are sharp edges at the corners, which may cause tissue damage. In addition, if the deployment position is not ideal after the frame structure is released, it cannot be retrieved and redeployed in time.

[0004] Existing endovascular support devices have several drawbacks: some devices require external attachment to the endoscope, have a large overall diameter, and are difficult to maneuver through the curved intestine; some support structures cannot be stably locked after deployment, making them prone to deformation and collapse; some devices are not retrievable, requiring additional surgery for removal, increasing trauma; other devices have excessively large gaps, making them prone to tissue embedding; sharp edges that easily cause tissue damage; they cannot be repeatedly adjusted for deployment, or their deployment position is difficult to adjust; deployment requires more complex pushing and rotating methods and relies on a drive mechanism for deployment, failing to meet the needs of complex endoscopic surgeries. Therefore, developing an endovascular colonic support device that can be delivered through the endoscopic instrument channel, is flexible, provides stable support, can be completely retrieved, and can still operate reliably even in a perforated state has significant clinical value. Summary of the Invention

[0005] The purpose of this invention is to provide an intestinal cavity support structure and delivery assembly, and a surgical instrument system to solve the above-mentioned technical problems. Since the cage extends continuously from the head to the tail, the position where it contacts the intestinal cavity is relatively smooth, which can effectively solve the problem that the unfolded structure in the prior art has sharp edges that are prone to causing tissue damage. It has good flexibility and support strength, and can maintain a stable surgical space even when the colon wall is damaged, through the conventional endoscopic instrument channel. It does not require continuous inflation, and is simple, safe and reliable to operate.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows: An intestinal cavity support structure, characterized in that it includes a head, a tail, and a cage that can extend along a direction perpendicular to the line connecting the head and the tail and away from the line connecting the head and the tail to support the intestinal cavity. The cage is connected to the head and tail at both ends, and extends continuously from the head to the tail. It extends in a streamlined, continuous manner, either wavy or arc-shaped. Specifically, the intestinal support structure of this technical solution is spindle-shaped when unfolded. Because the cage extends continuously from the head to the tail, the contact point with the intestinal lumen is relatively smooth, effectively solving the problem of sharp edges in existing unfolded structures that easily cause tissue damage.

[0007] Preferably, in the extended state, the projection along the head-to-tail direction includes both the head and tail within the cage's projection area. This allows the cage to occupy a larger area in the extended state, ensuring that the main contact points between the intestinal lumen and its supporting structure are on the cage. The contact points with the intestinal lumen are relatively smooth, effectively solving the problem of sharp edges in the extended structure of existing technologies that easily cause tissue damage.

[0008] Preferably, the cage includes multiple support bars that can remain extended and deformably contract. The multiple support bars are circumferentially distributed and each end is connected to the head and tail respectively; A gap is provided between the two support strips in the circumferential direction. In this technical solution, five support strips are specifically provided. These support strips are made of a superelastic shape memory alloy, specifically a nickel-titanium alloy. A nickel-titanium alloy wire of a certain thickness exhibits strong flexibility on a macroscopic scale, and after effective heat setting, the wire can return to its heat-set posture after deformation under stress at room temperature. Specifically, in this technical solution, the intestinal lumen support structure can deform and contract, becoming folded, during its movement within the first channel. After exiting the first channel and entering the intestinal space, the intestinal lumen support structure can be released within the intestinal space, returning to its extended state. The cage is formed by setting multiple support bars, which are continuously set from the head to the tail. The position where the support bars contact the intestinal cavity is relatively smooth, which can effectively solve the problem that the unfolded structure in the prior art has sharp edges that are easy to cause tissue damage.

[0009] Furthermore, it can remain in an extended state within the intestinal lumen, while it can deform and contract to form a folded state when moved into the first channel. Thus, the deployment position of the intestinal lumen support structure can be adjusted by setting the first channel. If the initial deployment position in the intestine is not ideal, the intestinal lumen support structure can be moved back into the first channel. Once the first channel is moved to the desired position, the intestinal lumen support structure is released back into the intestine. After release, the intestinal lumen support structure remains in an extended state to support the intestinal lumen. This technical solution can achieve multiple adjustments to the deployment position, solving the problem of difficulty in adjusting the deployment position or inability to deploy multiple times in the prior art.

[0010] Furthermore, due to the characteristics of its shape memory alloy, the cage outside the first channel can extend spontaneously without relying on other driving components to reach the target shape, thus solving the problem in the prior art that the deployment to the target shape requires a relatively complex pushing or rotating method and a driving mechanism that relies on a driving mechanism for deployment.

[0011] The gaps between the support bars provide sufficient space for the operation of surgical instruments, allowing them to contact the intestinal wall through the gaps.

[0012] Preferably, in the extended state, using the line connecting the head and tail as a baseline, the distance between the middle of the support bar and the baseline is set as follows: Y; the distance between the support bar near the tail and the baseline is set as follows: X; the distance between the support bar near the head and the baseline is set as follows: Z, satisfying Y > X, Y > Z. Wherein, the distance Y from the middle of the support bar to the baseline is greater than the radius of the head or the radius of the tail. This extends the support bar so that its middle portion is far from the baseline. Since the support bars are circumferentially arranged, multiple support bars form a cage to support the intestinal lumen.

[0013] Preferably, in the extended state, the support line is either arc-shaped or wavy in the direction from head to tail. This ultimately results in the overall shape of the intestinal support structure being spindle-shaped or eccentrically spindle-shaped.

[0014] Preferably, the cage body includes multiple support bars made of nickel-titanium alloy shape memory metal that can maintain an extended state and deform and shrink. The multiple support bars are circumferentially distributed and each end is connected to the head and tail respectively; A gap is set between the two support bars in the circumferential direction.

[0015] Preferably, the two ends of the support strip are fixedly disposed inside the head and the tail, respectively. The head is provided with a first connecting cavity and the tail is provided with a second connecting cavity. The two ends of the support strip are respectively embedded in the first connecting cavity and the second connecting cavity. Then, force is applied to the first connecting cavity and the second connecting cavity to deform them toward the support strip, thereby fixing the two ends of the support strip in the first connecting cavity and the second connecting cavity.

[0016] Preferably, the end of the head furthest from the connecting support bar is provided with a first end portion, and the outer surface of the first end portion along the axial direction of the head is arc-shaped. The arc-shaped cross-section of the head has two advantages: firstly, when the intestinal support structure moves to the outside of the first channel, the contact surface between it and the intestinal lumen is relatively smooth, avoiding sharp edges that could easily cause tissue damage; secondly, this shape facilitates transport within the first channel, avoiding sharp surfaces from impacting the first channel and improving the smoothness of movement of the intestinal support structure within the first channel.

[0017] This technical solution also provides a conveying component, including the aforementioned intestinal cavity support structure, and a storage component that causes the support strip to deform and contract inside the intestinal cavity support structure when the intestinal cavity support structure is moved, or to reach an extended state when the intestinal cavity support structure is moved to the outside of the intestinal cavity support structure. During the process of moving the intestinal support structure into the receiving component, the intestinal support structure deforms and contracts to be accommodated inside the receiving component. After the intestinal support structure is pushed from inside the receiving component to the outside of the receiving component, the intestinal support structure can return to its extended state and thus be deployed within the intestinal lumen. Therefore, when the intestinal support structure is inside the receiving component, the position of the intestinal support structure output by the receiving component can be adjusted to achieve the adjustment of the deployment position of the intestinal support structure, thereby achieving adjustable deployment position. When the intestinal support structure is released to the outside of the receiving component and into the intestinal lumen, if the deployment position is not ideal, the intestinal support structure can be moved back into the receiving component, and the receiving component can be moved again to adjust the position of the intestinal support structure output within the intestinal lumen, thereby pushing the intestinal support structure out of the receiving component and completing the redeployment operation. The deployment method provided by the intestinal support structure of this technical solution has the advantages of easy redeployment and easy adjustment of deployment position.

[0018] Preferably, the receiving component includes a sheath, and the sheath contains a first channel that allows the support strip to contract inside the movable intestinal support structure when it is moved, or to extend when the intestinal support structure is moved outside. The first channel can accommodate the intestinal support structure and communicates with the outside of the sheath. The sheath is specifically a polytetrafluoroethylene (PTFE) tube. During the process of the intestinal lumen support structure moving into the first channel, the intestinal lumen support structure deforms and contracts to be accommodated within the first channel. After the intestinal lumen support structure is pushed from inside the first channel to the outside of the first channel, the intestinal lumen support structure can return to its extended state, thus allowing it to be deployed within the intestinal lumen. Therefore, when the intestinal lumen support structure is inside the first channel, the position of the intestinal lumen support structure output from the first channel can be adjusted, thereby achieving adjustable deployment position. When the intestinal lumen support structure is released to the outside of the first channel and into the intestinal lumen, if the deployment position is not ideal, the intestinal lumen support structure can be moved back into the first channel, and the sheath can be moved again to adjust the position of the intestinal lumen support structure output from the first channel within the intestinal lumen, thereby pushing the intestinal lumen support structure out of the first channel and completing the redeployment operation. The deployment method provided by the intestinal lumen support structure of this technical solution has the advantages of easy redeployment and easy adjustment of deployment position. Therefore, the sheath in this technical solution has two functions: first, it can serve as an auxiliary structure for adjusting the deployment position of the intestinal support structure; second, it can serve as a receiving tool for the intestinal support structure, facilitating the transmission of the intestinal support structure in the instrument channel of the endoscope.

[0019] Preferably, a base is provided at the end of the sheath away from the clamp. This facilitates the movement of the sheath.

[0020] Preferably, the delivery assembly further includes a gripping component capable of gripping and moving the intestinal support structure into the first channel. The gripping component is movably connected to the first channel. The gripping component can move within the first channel and extend beyond the sheath through the first channel to grip the released intestinal support structure. Because the gripping component can move within the first channel, after extending out of the first channel, it grips the tail and moves into the first channel, thereby causing the intestinal support structure to move, deforming and contracting to fit within the first channel. When it is necessary to deploy the intestinal support structure within the intestinal lumen, the gripping component grips the tail and pushes the intestinal support structure towards the output end of the first channel, thus pushing the intestinal support structure out of the first channel. The intestinal support structure can then return to its extended state within the intestinal lumen, allowing it to be deployed there. At this point, the gripping component releases its grip on the tail.

[0021] Preferably, the gripping assembly includes a gripper movably connected within the first channel and capable of gripping the tail to move the intestinal support structure, and an adjustment mechanism extending within the first channel to drive the gripper and control the opening and closing state of the gripper. The adjustment mechanism controls the opening of the gripper, allowing the gripper to perform gripping or releasing operations on the tail.

[0022] Preferably, the tail portion is provided with a clamping part that facilitates gripping by the chuck, and the clamping part is spherical or has a polygonal outer periphery with a radial cross-section.

[0023] Preferably, the adjustment mechanism includes an extension that extends within the first channel, the extension being hinged to the clamp. The extension portion has a second channel inside, and a moving component is provided within the second channel to allow the chuck to open and close around its hinge point with respect to the extension portion. The extension portion is a hollow tube shape. The chuck includes a first chuck body, a first hinge block connected to the first chuck body, a second chuck body, and a second hinge block connected to the second chuck body. The first and second hinge blocks are hinged to the end of the extension portion, and the first and second hinge blocks have corresponding first and second hinge ends at the hinge point. The first and second hinge ends are coaxially arranged and hinged to the extension portion, with the first and second hinge blocks stacked sequentially along the first hinge end direction, and their extension directions intersecting each other along the first hinge axis. The moving component in the second channel is connected to the chuck, allowing the moving component to drive the chuck to open and close, correspondingly enabling clamping or releasing operations on the tail end.

[0024] In addition, both the clamp and the extension are provided and are located within the first channel, resulting in a high degree of integration. This allows the intestinal support structure to be moved within the first channel to complete the operation of accommodating the intestinal support structure within the first channel or deploying the intestinal support structure by pushing it out.

[0025] Preferably, the moving component includes a drive line passing through the second channel and a connecting rod connected to one end of the drive line near the clamp. The chuck includes a first chuck body, a first hinge block connected to the first chuck body, a second chuck body, and a second hinge block connected to the second chuck body, wherein the first hinge block and the second hinge block are hinged to each other. The end of the connecting rod furthest from the drive line is hinged to the first hinge block and the second hinge block, respectively. The drive line is a drive steel wire. The first hinge block has a third hinge end at its hinge point with the connecting rod. The third hinge end, the first hinge end, and the first chuck body are sequentially arranged and gradually move away from the drive line. The second hinge block has a fourth hinge end at its hinge point with the connecting rod. The fourth hinge end, the second hinge end, and the second chuck body are sequentially arranged and gradually move away from the drive line. The movement of the connecting rod causes the first and second hinge blocks to rotate around their coaxially arranged first and second hinge ends, thereby rotating the first and second chuck bodies to control the opening and closing of the chucks. This forms a multi-layered structure with an extension and chuck inside the sheath, and a drive line inside the extension, resulting in a high degree of overall structural integration.

[0026] Preferably, the end of the extension near the clamp is provided with a fixing seat that is hinged to the first hinge block and the second hinge block. A push rod is installed at the end of the drive line. The connecting rod includes a third hinge block and a fourth hinge block that have the same hinge position as the push rod; The fourth hinge block is provided with a fifth hinge end at the end away from the push rod, which is hinged to the second hinge block, wherein the fifth hinge end and the fourth hinge end are coaxially arranged. The third hinge block is provided with a sixth hinge end at the end away from the push rod, which is hinged to the first hinge block, wherein the sixth hinge end and the third hinge end are coaxially arranged. The fixed base is provided with a seventh hinge end that is coaxial with the first hinge end and the second hinge end. The drive line drives the push rod, thereby moving the third hinge block and the fourth hinge block, causing the first hinge block and the second hinge block to be driven to rotate around the coaxially arranged first hinge end and second hinge end, realizing the rotation of the first chuck body and the second chuck body, so as to control the opening and closing of the chuck.

[0027] Preferably, the fixed base is provided with a first groove that restricts the connecting rod, the first hinge block, and the second hinge block from moving axially along the first hinge end, and the first groove is connected to the second channel. Along the axial direction of the first hinge end, the first hinge block is positioned above the second hinge block, and the fourth hinge block is positioned above the third hinge block. The surfaces of the first and fourth hinge blocks are flush with each other and face the inner surface of the first groove. The surfaces of the second and third hinge blocks are flush with each other and face the inner surface of the other side of the first groove. The first and fourth hinge blocks, and the second and third hinge blocks are stacked axially and limited by the first groove to prevent axial movement. This also results in a smaller overall volume for the connecting rod and the first and second hinge blocks.

[0028] Preferably, the first clamping head body is provided with a first cavity, and the second clamping head body is provided with a second cavity that can jointly clamp the gripping part with the first cavity. This allows the gripping part to be confined by the space enclosed by the first and second cavities, thereby completing the clamping action.

[0029] Preferably, the tail portion is provided with an extension end for connecting the clamping portion, wherein the first clamp body is provided with a second groove communicating with the first cavity; the second clamp body is provided with a third groove communicating with the second cavity, and the extension end is fitted into the space enclosed by the second groove and the third groove. The second groove and the third groove are both provided on the same side of the clamp, and when the clamp is in the engaged state, the second groove and the third groove together form a circular groove.

[0030] Preferably, the moving component further includes a drive mechanism capable of moving the drive line. The drive mechanism includes a handle coaxially disposed at the end of the extension away from the chuck, a through groove radially through the handle and extending axially to communicate with a second channel, and a slider movably disposed on the handle and radially fitted into the through groove. The drive line extends into the through groove and connects to the slider at the end away from the chuck. The centerline of the through groove extends in the same direction as the axis of the extension; the connection point between the drive line and the slider is located at the centerline of the through groove.

[0031] The movement of the slider drives the drive line to move within the second channel, thereby controlling the movement of the connecting rod. Since the chuck is hinged to the fixed seat, the movement of the connecting rod can drive the first chuck body and the second chuck body to rotate along the coaxial setting of the first hinge end and the second hinge end, thereby realizing the opening and closing of the chuck.

[0032] This technical solution also provides a surgical instrument system, including an endoscope with an instrument channel and a delivery component that transmits data through the instrument channel. The delivery component transmits data through the instrument channel, aligning the end of the first channel with the end of the instrument channel. A gripping component then pushes an intestinal support structure from within the first channel to the outside of the first channel. The intestinal support structure can then return to its extended state, allowing it to be deployed within the intestinal lumen. When the intestinal support structure needs to be repositioned, the gripping component extends outside the first channel and the instrument channel, gripping the tail end and moving the intestinal support structure towards the inside of the first channel. During this movement, the intestinal support structure deforms and contracts to fit within the first channel. As the endoscope moves to the desired position, the output end of the first channel simultaneously moves to the desired position, thus pushing the intestinal support structure out of the first channel, completing the repositioning operation.

[0033] This application has achieved beneficial technical effects: Because the cage body extends continuously from the head to the tail, the contact area between the cage body and the intestinal cavity is relatively smooth, which can effectively solve the problem that the unfolded structure in the prior art has sharp edges that are prone to causing tissue damage. It can be used through the conventional endoscopic instrument channel without modifying the endoscope, and can be adapted to existing surgical procedures; It has high support strength and stable shape, and can still provide reliable support under perforation and full-layer cutting conditions, without relying on air; The opening is not loose or collapsed, and the surgical procedure is safe and stable; It is retractable and retractable, with minimally invasive procedures throughout, reducing patient trauma; It is flexible and can pass smoothly through the curved colon, making it highly passable and suitable for a wide range of applications. Attached Figure Description

[0034] Figure 1 The diagram shows the extended state of the intestinal lumen support structure. Figure 2 The diagram shows a folded structure formed by the deformation and contraction of the intestinal lumen support structure. Figure 3 The diagram shows the structure of the clamping component connected to the storage component. Figure 4 As shown Figure 3 Schematic diagram of the BB-direction cross-section structure; Figure 5 The image shown is one of the exploded structural diagrams of the storage components and the intestinal cavity support structure; Figure 6 The image shown is the second exploded structural diagram of the storage components and the intestinal cavity support structure; Figure 7 The image shown is one of the exploded structural diagrams of the storage component and the clamping component; Figure 8 The second exploded view of the storage component and the clamping component is shown. Figure 9 The diagram shown is one of the connection structures between the chuck and the fixed base; Figure 10 As shown Figure 9 Schematic diagram of the DD-direction cross-section structure; Figure 11 The second schematic diagram shows the connection structure between the chuck and the fixed base; Figure 12 As shown Figure 11 Schematic diagram of the CC-direction cross-section structure; Figure 13 The third diagram shows the connection structure between the chuck and the fixed base; Figure 14 The diagram shown is one of the connection structures connecting the chuck and the connecting rod. Figure 15 The second schematic diagram shows the connection structure between the chuck and the connecting rod. Figure 16 The image shown is one of the structural schematic diagrams of the chuck; Figure 17 The second schematic diagram shows the structure of the chuck; Figure 18 The diagram shows the process flow of the clamp picking up the intestinal support structure and moving it into the storage assembly. Figure 19The diagram shows the structure in which the gripping assembly is pushed out of the instrument channel of the endoscope and reaches an extended state. Figure 20 The diagram shows the structure of the gripping assembly extending the gripper head outside the instrument channel and releasing the tail.

[0035] Figure Labels 1-Intestinal support structure; 11-Head; 12-Tail; 122-Clamping part; 13-Cage body; 131-Support bar; 132-Gap; 112-First end; 2-Storage assembly; 21-Sheath body; 22-First channel; 23-Base; 3-Clamping assembly; 31-Clamping head; 32-Adjustment mechanism; 321-Extension; 322-Second channel; 331-Drive line; 311-First clamping head body; 312-First hinge block; 313 - Second chuck body; 314- Second hinge block; 323- Fixing base; 341- Third hinge block; 342- Fourth hinge block; 3421- Fifth hinge end; 3411- Sixth hinge end; 3231- Seventh hinge end; 324- First groove; 3111- First cavity; 3131- Second cavity; 123- Extension end; 3112- Second groove; 3132- Third groove; 333- Handle; 334- Through groove; 335- Slider. Detailed Implementation

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0037] The technical solution of the present invention will be described in detail below with specific embodiments.

[0038] Reference Figures 1 to 20 An intestinal support structure includes a head 11, a tail 12, and a cage 13 that can extend along a direction perpendicular to the line connecting the head 11 and the tail 12 and away from the line connecting the head 11 and the tail 12 to support the intestinal cavity. The cage 13 is connected to the head 11 and the tail 12 at both ends, and extends continuously from the head 11 to the tail 12. It extends in a streamlined, continuous manner, either wavy or arc-shaped. Specifically, the intestinal support structure of this technical solution is spindle-shaped when unfolded. Because the cage 13 extends continuously from the head 11 to the tail 12, the position where it contacts the intestinal lumen is relatively smooth, effectively solving the problem of sharp edges in existing structures that easily cause tissue damage.

[0039] In its extended state, projected along the direction from head 11 to tail 12, both head 11 and tail 12 fall within the projection of the cage body 13. This allows the cage body 13 to occupy a larger area when extended, ensuring that the main contact point between the intestinal lumen and its supporting structure is on the cage body 13. The contact area between the cage body and the intestinal lumen is relatively smooth, effectively solving the problem of sharp edges in existing structures that easily cause tissue damage.

[0040] The cage 13 includes multiple support bars 131 that can remain in an extended state and can deform and retract. Multiple support bars 131 are circumferentially distributed and each end is connected to the head 11 and the tail 12 respectively; A gap 132 is provided between the two support bars 131 in the circumferential direction. In this technical solution, five support bars 131 are specifically provided. The support bars 131 are made of superelastic shape memory alloy, specifically nickel-titanium alloy. Nickel-titanium alloy wires of a certain thickness exhibit strong flexibility on a macroscopic scale, and after effective heat setting, the nickel-titanium alloy wires can return to their heat-set posture after being deformed under stress at room temperature. Specifically, in this technical solution, the intestinal lumen support structure can deform and contract and be folded during the process of being moved into the first channel, and after the intestinal lumen support structure is removed from the outside of the first channel and enters the intestinal space, it can be released in the intestinal space and return to its extended state. The cage body 13 is formed by setting multiple support bars 131. The support bars 131 are continuously set from the head 11 to the tail 12. The position where they contact the intestinal lumen is relatively smooth, which can effectively solve the problem that the unfolded structure in the prior art has sharp edges that are easy to cause tissue damage.

[0041] Furthermore, it can remain in an extended state within the intestinal lumen, while it can deform and contract to form a folded state when moved into the first channel. Thus, the deployment position of the intestinal lumen support structure can be adjusted by setting the first channel. If the initial deployment position in the intestine is not ideal, the intestinal lumen support structure can be moved back into the first channel. Once the first channel is moved to the desired position, the intestinal lumen support structure is released back into the intestine. After release, the intestinal lumen support structure remains in an extended state to support the intestinal lumen. This technical solution can achieve multiple adjustments to the deployment position, solving the problem of difficulty in adjusting the deployment position or inability to deploy multiple times in the prior art.

[0042] Furthermore, due to the characteristics of its shape memory alloy, the cage 13 outside the first channel can extend spontaneously without relying on other driving components to reach the target shape, thus solving the problem in the prior art that the deployment to the target shape requires a relatively complex pushing or rotating method and a driving mechanism that relies on a driving mechanism for deployment.

[0043] The gap 132 between the support bars 131 provides space for the operation of surgical instruments, so that the surgical instruments can contact the inner wall of the intestinal lumen through the gap 132.

[0044] In the extended state, with the line connecting the head 11 to the tail 12 as the baseline O, the distance between the middle of the support bar 131 and the baseline is set by Y; the distance between the support bar near the tail and the baseline is set by X; the distance between the support bar near the head and the baseline is set by Z, satisfying Y > X and Y > Z. The distance Y from the middle of the support bar to the baseline is greater than the radius of the head or the radius of the tail. This extends the support bar 131 away from the baseline. Since the support bars are circumferentially arranged, multiple support bars form a cage to support the intestinal lumen.

[0045] In its extended state, the support line 131, from the head 11 to the tail 12, is either arc-shaped or wavy. Ultimately, this results in the overall shape of the intestinal support structure being spindle-shaped or eccentric spindle-shaped.

[0046] The cage 13 includes multiple support bars 131 made of nickel-titanium alloy shape memory metal, which can maintain an extended state and deform and shrink. Multiple support bars 131 are circumferentially distributed and each end is connected to the head 11 and the tail 12 respectively; A gap 132 is provided between the two support bars 131 in the circumferential direction.

[0047] The two ends of the support bar 131 are fixedly disposed inside the head 11 and the tail 12, respectively. The head 11 is provided with a first connecting cavity 111 and the tail 12 is provided with a second connecting cavity 121. The two ends of the support bar 131 are respectively embedded in the first connecting cavity 111 and the second connecting cavity 121. Then, force is applied to the first connecting cavity 111 and the second connecting cavity 121 to deform towards the support bar 131, thereby fixing the two ends of the support bar 131 in the first connecting cavity 111 and the second connecting cavity 121.

[0048] The head 11 is provided with a first end portion 112 at the end furthest from the connecting support bar 131. The first end portion 112 has an arc-shaped cross-section along the axial direction of the head 11. The arc-shaped cross-section of the head 11 has two advantages: firstly, when the intestinal support structure moves to the outside of the first channel, the contact surface between it and the intestinal lumen is relatively smooth, avoiding sharp edges that could easily cause tissue damage; secondly, this shape is conducive to transport within the first channel, avoiding sharp surfaces from colliding with the first channel and improving the smoothness of the intestinal support structure moving within the first channel.

[0049] This technical solution also provides a conveying component, including the intestinal cavity support structure, and a storage component that allows the support bar 131 to deform and contract inside the intestinal cavity support structure when the intestinal cavity support structure is moved, or to reach an extended state when the intestinal cavity support structure is moved to the outside. During the process of moving the intestinal support structure 1 into the receiving component, the intestinal support structure 1 deforms and contracts to be accommodated inside the receiving component. After the intestinal support structure 1 is pushed from inside the receiving component to outside the receiving component, the intestinal support structure 1 can return to its extended state and thus be deployed inside the intestinal lumen. Therefore, when the intestinal support structure 1 is inside the receiving component, the position of the intestinal support structure 1 output by the receiving component can be adjusted, thereby adjusting the deployment position of the intestinal support structure 1, thus achieving adjustable deployment position. When the intestinal support structure 1 is released to the outside of the receiving component and inside the intestinal lumen, if the deployment position is not ideal, the intestinal support structure 1 can be moved back into the receiving component, and the receiving component can be moved again to adjust the position of the intestinal support structure 1 output in the intestinal lumen, thereby pushing the intestinal support structure 1 out of the receiving component, completing the redeployment operation. The deployment method of the intestinal support structure 1 in this technical solution has the advantages of easy redeployment and easy adjustment of deployment position.

[0050] The receiving component 2 includes a sheath 21, inside which is a first channel 22 that allows the intestinal support structure 1 to deform and contract within the channel or to extend when the intestinal support structure 1 is moved to the outside. The first channel 22 can accommodate the intestinal support structure 1 and is connected to the outside of the sheath 21. Specifically, the sheath 21 is a polytetrafluoroethylene (PTFE) tube. During the movement of the intestinal support structure 1 into the first channel 22, the intestinal support structure 1 deforms and contracts to be accommodated within the channel 22. After being pushed from inside the first channel 22 to the outside, the intestinal support structure 1 returns to its extended state, allowing it to be deployed within the intestinal lumen. Thus, when the intestinal support structure 1 is inside the first channel 22, the position of the intestinal support structure 1 output from the first channel 22 can be adjusted to achieve the desired deployment position. The intestinal support structure 1 can be adjusted to achieve an adjustable deployment position. When the intestinal support structure 1 is released to the outside of the first channel 22 and into the intestinal lumen, if the deployment position is not ideal, the intestinal support structure can be moved back into the first channel 22, and the sheath 21 can be moved again to adjust the position of the intestinal support structure 1 output from the first channel 22 into the intestinal lumen. This allows the intestinal support structure 1 to be pushed out of the first channel 22, completing the redeployment operation. The deployment method of the intestinal support structure 1 in this technical solution has the advantages of easy redeployment and easy adjustment of deployment position. Therefore, the sheath 21 in this technical solution has two functions: first, it can serve as an auxiliary structure for adjusting the deployment position of the intestinal support structure 1; second, it can serve as a receiving tool for the intestinal support structure 1, facilitating the transmission of the intestinal support structure 1 in the instrument channel of the endoscope.

[0051] A base 23 is provided at the end of the sheath 21 away from the clamp to facilitate the movement of the sheath 21.

[0052] The delivery assembly also includes a gripping component 3 capable of gripping and moving the intestinal support structure 1 into the first channel 22. The clamping component 3 is movably connected to the first channel 22. The clamping component can move within the first channel 22 and can extend beyond the sheath 21 through the first channel 22 to clamp the released intestinal support structure 1. Since the clamping component can move within the first channel 22, after extending out of the first channel 22, it clamps the tail 12 and moves it into the first channel 22, thereby causing the intestinal support structure 1 to move, allowing it to deform and contract to be accommodated within the first channel 22. (Refer to...) Figure 18 As shown in the process diagram; when it is necessary to deploy the intestinal support structure 1 within the intestinal lumen, the gripping component grips the tail end and pushes the intestinal support structure 1 toward the output end of the first channel 22, thereby pushing the intestinal support structure 1 out of the first channel 22, as described above. Figure 18 As shown in the reverse process, the intestinal support structure 1 can be restored to its extended state in the intestinal lumen, thus allowing it to be deployed within the intestinal lumen, at which point the gripping assembly releases its grip on the tail 12.

[0053] The gripping assembly includes a gripper 31 movably connected within the first channel 22 and capable of gripping the tail 12 to move the intestinal support structure 1, and an adjustment mechanism 32 extending within the first channel 22 to drive the gripper 31 and control the opening and closing state of the gripper 31. The opening of the gripper 31 is controlled by the adjustment mechanism 32, allowing the gripper 31 to perform the gripping or releasing operation on the tail 12.

[0054] The tail portion 12 is provided with a gripping part 122 for easy clamping by the chuck 31. The gripping part 122 is spherical or has a polygonal outer periphery with a radial cross-section. This is used to increase the gripping friction and facilitate the retrieval operation.

[0055] The adjustment mechanism 32 includes an extension 321 that extends within the first channel 22, and the extension 321 is hinged to the clamp 31. The extension 321 is internally provided with a second channel 322, and the second channel 322 is provided with a moving component that allows the chuck 31 to open and close with the hinge point with respect to the extension 321 as the rotation center. The extension 321 is in the shape of a hollow tube. The chuck 31 includes a first chuck body 311, a first hinge block 312 connected to the first chuck body 311, a second chuck body 313, and a second hinge block 314 connected to the second chuck body 313. The first hinge block 312 and the second hinge block 314 are hinged to the end of the extension 321, and the first hinge block 312 and the second hinge block 314 are respectively provided with a first hinge end 3121 and a second hinge end 3141 at the hinge point. The first hinge end 2131 and the second hinge end 3141 are coaxially arranged and hinged to the extension 321, so that the first hinge block 312 and the second hinge block 314 are stacked sequentially along the axial direction of the first hinge end 3121, and their extension directions intersect each other along the projection of the first hinge end 3121. The moving component in the second channel 322 is connected to the chuck 31, so that the moving component drives the chuck 31 to open and close, which can be used to clamp or release the tail 12.

[0056] In addition, both the clamp 31 and the extension 321 are provided and are located within the first channel 22, resulting in a high degree of integration. This allows the intestinal support structure 1 to be moved within the first channel 22 to complete the operation of accommodating the intestinal support structure 1 within the first channel 22 or deploying the intestinal support structure 1 by pushing it out.

[0057] The moving component includes a drive line 331 passing through the second channel 321 and a connecting rod connected to one end of the drive line 331 near the clamp 31. The chuck 31 includes a first chuck body 311, a first hinge block 312 connected to the first chuck body 311, a second chuck body 313, and a second hinge block 314 connected to the second chuck body 313. The first hinge block 312 and the second hinge block 314 are hinged to each other. The end of the connecting rod away from the drive line 331 is hinged to the first hinge block 312 and the second hinge block 314 respectively. The drive line 331 is a drive steel wire. The first hinge block 312 has a third hinge end 315 at its hinge point with the connecting rod. The third hinge end 315, the first hinge end 2131, and the first chuck body 311 are sequentially arranged and gradually move away from the drive line 331. The second hinge block 314 has a fourth hinge end 316 at its hinge point with the connecting rod. The fourth hinge end 316, the second hinge end 314, and the second chuck body 313 are sequentially arranged and gradually move away from the drive line 331. The movement of the connecting rod causes the first hinge block 312 and the second hinge block 314 to rotate around the coaxially arranged first hinge end 2131 and second hinge end 3141, thereby realizing the rotation of the first chuck body 311 and the second chuck body 313, and controlling the opening and closing of the chuck 31. The sheath 21 has an extension 321 and a clamp 31 inside, and the extension 321 has a drive line 331 inside. The overall structure has a high degree of integration.

[0058] The extension 321 is provided with a fixing seat 323 at one end near the clamp 31, which is hinged to the first hinge block 312 and the second hinge block 314. A push rod 332 is provided at the end of the drive line 331. The connecting rod includes a third hinge block 341 and a fourth hinge block 342 that have the same hinge position as the push rod 332; The fourth hinge block 342 is provided with a fifth hinge end 3421 at one end away from the push rod 332, which is hinged to the second hinge block 314, wherein the fifth hinge end 3421 and the fourth hinge end 316 are coaxially arranged. The third hinge block 341 is provided with a sixth hinge end 3411 at the end away from the push rod 332, which is hinged to the first hinge block 312, wherein the sixth hinge end 3411 and the third hinge end 315 are coaxially arranged. The fixed base 323 is provided with a seventh hinge end 3231 coaxial with the first hinge end 3121 and the second hinge end 3141. The drive line 331 drives the push rod 332, thereby moving the third hinge block 341 and the fourth hinge block 342, causing the first hinge block 312 and the second hinge block 314 to be driven to rotate around the coaxially arranged first hinge end 3121 and second hinge end 3141, realizing the rotation of the first chuck body 311 and the second chuck body 312, so as to control the opening and closing of the chuck 31.

[0059] The fixed base 323 is provided with a first groove 324 that restricts the connecting rod, the first hinge block 312, and the second hinge block 314 from moving axially along the first hinge end 3121. The first groove 324 is connected to the second channel 322. Along the axial direction of the first hinge end 3121, the first hinge block 312 is disposed above the second hinge block 314, and the fourth hinge block 342 is disposed above the third hinge block 341. The surfaces of the first hinge block 312 and the fourth hinge block 342 are flush with each other and face the inner surface of the first groove 324. The surfaces of the second hinge block 314 and the third hinge block 341 are flush with each other and face the inner surface of the other side of the first groove 324. The first hinge block 312 and the fourth hinge block 342, and the second hinge block 314 and the third hinge block 341 are stacked axially, and are limited by the first groove 324 to prevent axial movement. This also results in a smaller overall volume for the connecting rod and the first hinge block 312 and the second hinge block 314.

[0060] The first clamp body 311 is provided with a first cavity 3111, and the second clamp body 313 is provided with a second cavity 3131 that can jointly clamp the clamping part 122 with the first cavity 3111. The clamping part 122 is limited by the space enclosed by the first cavity 3111 and the second cavity 3131, thereby completing the clamping action.

[0061] The tail portion 12 is provided with an extension end 123 connecting to the clamping portion 122. The first clamp body 311 is provided with a second groove 3112 communicating with the first cavity 3111; the second clamp body 313 is provided with a third groove 3132 communicating with the second cavity 3131. The extension end 123 is fitted into the space enclosed by the second groove 3112 and the third groove 3132. The second groove 3112 and the third groove 3132 are both provided on the same side of the clamp 31. When the clamp 31 is in the locked state, the second groove 3112 and the third groove 3132 together form a circular groove.

[0062] The moving component also includes a drive mechanism that can move the drive line 331. The drive mechanism includes a handle 333 coaxially disposed at the end of the extension 321 away from the chuck, a through groove 334 radially extending through the handle 333 and communicating with the second channel 322, and a slider 335 movably disposed on the handle and radially fitted into the through groove 334. The drive line 331 extends into the through groove 334 and connects to the slider 335 at the end away from the chuck 31. The centerline of the through groove 334 extends in the same direction as the axis of the extension 321; the connection point between the drive line 331 and the slider 335 is located at the centerline of the through groove 334.

[0063] The movement of slider 335 drives drive line 331 to move within second channel 322, thereby controlling the movement of connecting rod. Since chuck 31 is hinged to fixed base 323, the movement of connecting rod can drive first chuck body 311 and second chuck body 313 to rotate along the coaxial setting of first hinge end 3121 and second hinge end 3141, thereby realizing the opening and closing of chuck 31.

[0064] This technical solution also provides a surgical instrument system, including an endoscope with an instrument channel, and a delivery component that transmits data through the instrument channel. The delivery assembly transmits the intestinal support structure 1 through the instrument channel, aligning the first channel 22 with the end of the instrument channel. The intestinal support structure 1, then pushed from the first channel 22 to the outside by the gripping assembly, can then be extended and deployed within the intestinal lumen. When the intestinal support structure needs to be redeployed, the gripping assembly extends outside the first channel 22 and the instrument channel, gripping the tail 12 and moving the intestinal support structure 1 into the first channel 22. During this movement, the intestinal support structure 1 deforms and contracts to fit within the first channel 22. As the endoscope moves to the desired position, the output end of the first channel 22 simultaneously moves to the desired position, pushing the intestinal support structure 1 out of the first channel 22, completing the redeployment operation. During the movement of the intestinal support structure, the gripping assembly can be rotated to adjust the portion of the intestinal support structure protruding outside the instrument channel. Furthermore, since this application is mainly composed of multiple support bars, it has good flexibility and can pass smoothly through the curved parts of the instrument channel.

[0065] In this technical solution, the length of the extension is greater than the length of the first channel, so that the clamp can extend outside the first channel to push out the intestinal support structure or to clamp the intestinal support structure outside the first channel, which facilitates dragging the intestinal support structure into the first channel.

[0066] The diameter of the clamp in the closed state and the diameter of the extension are both smaller than the diameter of the first channel.

[0067] In this technical solution, the extended state is along a direction perpendicular to the line connecting the head and tail and away from the line connecting the head and tail, with the middle of the support bar far away from the line connecting the head and tail, forming an expanded state. The contracted state is characterized by the support bar being perpendicular to the line connecting the head and tail and oriented towards that line, with the middle of the support bar close to the line connecting the head and tail, forming an overall elongated shape.

[0068] The support bar is made of nickel-titanium alloy shape memory metal, which can spontaneously maintain its extended state. When it is retracted into the sheath, it is restricted and guided by the inner wall of the sheath, thus deforming and contracting and being folded into the first channel.

[0069] The intestinal lumen in this technical solution is specifically the colonic lumen. This principle can also be applied to other similar objects with intestinal structures. The intestinal support structure is folded within the first channel of the polytetrafluoroethylene (PTFE) tube, i.e., the sheath. Once the intestinal support structure is pushed out from the first channel, the cage will automatically unfold.

[0070] The intestinal support structure unfolds into an eccentric spindle shape. This eccentric spindle shape has a unique design that eliminates sharp edges, thereby minimizing tissue damage.

[0071] Preferably, when the intestinal support structure is placed horizontally, the tail is tilted downwards, making it easier for the user to use the clamp to grasp the tail and remove the intestinal support structure.

[0072] When the intestinal support structure is in the extended state, the outer periphery of the cage can contact the inner surface of the intestinal cavity and there is a gap between it and the line connecting the head and the tail. This allows the tail to maintain a certain distance from the inner surface of the intestinal cavity, preventing the tail from being too close to the intestinal cavity and making it difficult to be gripped by the clamps, thus making gripping more convenient. This technical solution proposes a self-expanding, re-deployable endoscopic colonic lumen support structure. After insertion through the instrument channel, the support structure can be deployed within the colonic lumen to support the gastrointestinal tract and prevent intestinal wall collapse. This ensures that intraluminal space is maintained even during full-thickness resection or perforation; therefore, it allows endoscopists to perform complex endoscopic procedures without worrying about the loss of intraluminal working space.

[0073] The support bars are made of nickel-titanium alloy and have a diameter of 0.5 mm. The cage provides strength and support to the gastrointestinal wall, preventing collapse of the intraluminal space. Preferably, each spoke is bent at a different length, causing the tail of the intestinal support structure to tilt downwards so that it can be gripped by the chuck. The extended end of the tail is a stainless steel wire rope with a diameter of 0.8 mm; the gripping part is specifically a stainless steel head, preferably hexagonal in shape to increase friction, allowing it to be gripped by the chuck, rotated, and retracted back into the sheath.

[0074] The intestinal support structure is inserted into a polytetrafluoroethylene sheath, i.e., a sheath. The outer diameter of the sheath is 2.8 mm, and the inner diameter is 2.4 mm.

[0075] The sheath design allows the intestinal support structure to be inserted through the instrument channel of the colonoscope.

[0076] In procedures involving intestinal support structures within the colon, the following methods may be referenced. Insert the colonoscope until the polyp is found; insert the intestinal support structure (encased in a PTFE sheath) into the instrument channel of the colonoscope; push the intestinal support structure out of the instrument channel while the PTFE sheath remains inside the instrument channel of the colonoscope; position the intestinal support structure in the desired location, which can be achieved by rotating the intestinal support structure, advancing it forward, and pulling it backward into the instrument channel of the colonoscope.

[0077] During the deployment of intestinal support structures To fully deploy the intestinal support structure, push the intestinal support structure out of the instrument channel until the clamp is exposed; Once the direction and location of the intestinal support structure are determined, open the clamps to release the intestinal support structure. Remove the PTFE sheath and clamping assembly from the instrument channel, allowing the channel to be freely used for other endoscopic instruments.

[0078] During polyp removal, the colonoscope can freely pass through the gaps between the support bars to perform the procedure.

[0079] During the process of recovering the intestinal lumen support structures Insert the PTFE-sheathed gripper assembly into the colonoscope instrument channel; Open the clamps to grip the tail end of the intestinal support structure; The clamping assembly and intestinal support structure are removed through the colonoscope instrument channel; The clamping assembly, intestinal support structure, and PTFE sheath were completely removed from the colonoscope instrument channel.

[0080] Compared with existing technologies, this technical solution has the following advantages: This technical solution employs a highly simplified push-deployment method. The intestinal support structure can be folded within a thin-walled polytetrafluoroethylene (PTFE) tube. Once pushed out from the working channel, the cage will automatically deploy. Compared to existing technologies that require more complex push and rotation methods and rely on drive mechanisms for deployment, this technical solution is easier and faster via channel delivery, potentially reducing operation time and technical operation failure rate.

[0081] This technical solution unfolds into an eccentric spindle shape. The unique design of the eccentric spindle shape eliminates sharp edges, thus minimizing tissue damage. Furthermore, the outer periphery of the cage can contact the inner surface of the intestinal lumen, and there is a gap between the cage and the line connecting the head and tail, allowing the tail to maintain a certain distance from the inner surface of the intestinal lumen, making it easier for the user to grasp the tail and retrieve the structure. Existing technologies extend the structure into a rectangular cuboid with sharp edges. Moreover, the tail component at its bottom position is often covered by tissue during use, making it difficult to find and grasp. This technical solution effectively reduces damage, makes it easier and faster to retrieve the structure through the channel, and potentially reduces surgical time and the failure rate of technical operations.

[0082] This technical solution enables the retrieval and redeployment of the intestinal support structure. This intestinal support structure allows for its retrieval and redeployment during surgery. Because the clamp holds the tail end, the operator can adjust the posture of the intestinal support structure within the cavity before completely disconnecting it from the tail end. This adjustment operation is not possible in existing technologies. In cases where the initial placement is not ideal, the operator can retrieve and reposition the current intestinal support structure.

[0083] This technical solution offers better endoscopic compatibility and a smaller size; it features a significantly smaller overall form factor. The sheath of the entire delivery assembly has a diameter of approximately 2.8 mm, suitable for endoscope working channels of 3.2 mm or larger. Existing technologies, however, require a larger working channel of 5.0 mm. The 3.2 mm requirement of this technical solution allows the current intestinal support structure to be used with a wider range of standard therapeutic endoscopes, while the 5.0 mm requirement of existing technologies limits its use to highly specialized or larger endoscopes.

[0084] This technical solution allows for the insertion of the instrument channel, thus disconnecting it from the endoscope for deployment. It maintains contact with the mucosa for the actual resection procedure.

[0085] This technical solution discloses an endoscopic deployable and retrievable intraluminal colonic support device, belonging to the field of minimally invasive medical device technology, and is particularly suitable for procedures such as colonic mucosal dissection, polyp removal, full-thickness resection, and perforation repair. The flexible support body is made of a cage-like support frame (cage) of superelastic shape memory alloy, which can retract and be stored in a delivery sheath and delivered to the target location through the endoscopic instrument channel. After release, it automatically unfolds to form a stable support cavity, supporting the intestinal wall to prevent collapse. Even with colonic wall perforation or full-thickness incision, it reliably supports the intestinal wall and maintains the surgical field and operating space. This technical solution features good flexibility, strong passability, stable support, and can be accessed and retrieved entirely through the endoscope. It maintains intraluminal operating space without continuous inflation, adapting to conventional endoscopic surgical procedures and suitable for minimally invasive procedures such as colonic polyp removal, mucosal dissection, full-thickness resection, and perforation repair. It possesses good flexibility and support strength, can pass through conventional endoscopic instrument channels, and stably maintains the surgical space even with colonic wall damage, without the need for continuous inflation. It is simple to operate, safe, and reliable. The sheath is a flexible, low-friction sleeve made of PTFE, with a friction coefficient between 0.04 and 0.1 and a roughness ≤ Ra 0.8. Its outer diameter is adapted to conventional endoscopic instrument channels and is used for the retraction, storage, delivery, and protection of the cage.

[0086] This technical solution has the following effects: The intestinal support structure can pass through the conventional endoscopic instrument channel without modifying the endoscope, thus adapting to existing surgical procedures; It has high support strength and stable shape, and can still provide reliable support under perforation and full-layer cutting conditions, without relying on air; Once unfolded, it does not loosen or collapse, ensuring a safe and stable surgical procedure. An intestinal support structure is inserted into the isolated porcine colon. Even after applying 25 mmHg pressure externally, the intestinal support structure still effectively supports the colon, and remains effective even when manually increased to 75 mmHg. In contrast, conventional gastrointestinal perfusion only requires 10 mmHg for effective perfusion. Therefore, this technique can withstand 75 mmHg of pressure to effectively support the colon and rectum. It is retractable and retractable, with minimally invasive procedures throughout, reducing patient trauma; It is flexible and can pass smoothly through the curved colon, making it highly passable and suitable for a wide range of applications.

[0087] The intestinal lumen support structure can bend through the bends of the colon and, when unfolded, has sufficient rigidity to withstand abdominal pressure and the weight of the intestinal wall. The main function of the intestinal lumen support structure in this technical solution is to provide visual support for intestinal endoscopic surgery. Since the intestinal lumen in this technical solution is used in the surgical process, unlike intestinal stents which require long-term support, it only needs to be supported for about 1 hour. Therefore, the requirement for the dimensional change rate is relatively low. The unfolded size of the intestinal lumen support structure under no load and the minimum dimensional change rate when unfolded in the intestine are both 1%, which is sufficient to meet the effect of providing visual support for intestinal endoscopic surgery.

[0088] During the procedure, the delivery process involves: inserting the intestinal support structure into the sheath and delivering it to the colonic surgical area via the endoscopic instrument channel; deployment and positioning: pushing the intestinal support structure out of the sheath; surgical procedure: performing lesion resection, suturing, and other procedures within the support cavity without the need for continuous inflation; and retrieval: retracting the intestinal support structure back into the sheath and then removing it completely via the endoscopic channel.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0091] The embodiments of the intestinal lumen support structure, delivery assembly, and surgical instrument system provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention, and the descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An intestinal lumen support structure, characterized in that, Includes a head (11), a tail (12), and a cage (13) that can be extended along a line perpendicular to the line connecting the head (11) and the tail (12) and away from the line connecting the head (11) and the tail (12) to support the intestinal cavity. The cage (13) is connected to the head (11) and the tail (12) at both ends, and the cage (13) extends continuously from the head (11) to the tail (12).

2. The intestinal lumen support structure according to claim 1, characterized in that, In the extended state, the head (11) and tail (12) are projected in the direction from the head (11) to the tail (12), and both the head (11) and tail (12) fall into the projection of the cage (13).

3. The intestinal lumen support structure according to claim 1 or 2, characterized in that, The cage (13) includes multiple support bars (131) that can remain in an extended state and can deform and shrink. The multiple support bars (131) are circumferentially distributed and each end is connected to the head (11) and the tail (12) respectively. A gap (132) is provided between the two support bars (131) in the circumferential direction.

4. The intestinal lumen support structure according to claim 3, characterized in that, In the extended state, with the line connecting the head (11) to the tail (12) as the baseline O, from the head (11) to the tail (12), the middle of the support bar (131) is set at a distance Y from the baseline; the support bar near the tail is set at a distance X from the baseline; the support bar near the head is set at a distance Z from the baseline, satisfying Y > X and Y > Z.

5. The intestinal lumen support structure according to claim 4, characterized in that, In the extended state, from the head (11) to the tail (12), the support line (131) is either arc-shaped or wavy.

6. The intestinal lumen support structure according to claim 3, characterized in that, The cage (13) includes multiple support bars (131) made of nickel-titanium alloy shape memory metal that can maintain an extended state and deform and shrink. The multiple support bars (131) are circumferentially distributed and each end is connected to the head (11) and the tail (12) respectively. A gap (132) is provided between the two support bars (131) in the circumferential direction.

7. The intestinal lumen support structure according to claim 3, characterized in that, The two ends of the support bar (131) are respectively fixed inside the head (11) and the tail (12); The head (11) is provided with a first end (112) at the end away from the connecting support bar (131), and the outer surface of the first end (112) along the axial direction of the head (11) is arc-shaped.

8. A conveying assembly, characterized in that, The intestinal lumen support structure includes any one of claims 1 to 7, and further includes a receiving component; The storage component (2) includes a sheath (21) and a first channel (22) inside the sheath (21) that causes the support strip to shrink inside when the movable intestinal support structure (1) is installed or to extend when the intestinal support structure (1) is moved outside.

9. The conveying assembly according to claim 8, characterized in that, The delivery assembly also includes a gripping component (3) that can grip and move the intestinal support structure (1) into the first channel (22). The clamping component (3) is movably connected to the first channel (22).

10. A surgical instrument system comprising an endoscope having an instrument channel, characterized in that, It also includes a transport assembly that transmits via an instrument channel as described in claim 8 or 9.

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