Interventional therapy delivery device

Abstract

This invention relates to the field of medical device technology and discloses an interventional treatment delivery device. The device includes a tube body and an operating handle. The tube body has inner and outer layers of sub-thiocyanate tubes fixed at the distal end, with a cutting groove at the distal end. The operating handle includes a housing, a slidable slider assembly, a push button, a rotatable rotating rod, a fixing block that engages with the rotating rod's sliding groove, a catheter seat assembly fixed to the inner sub-thiocyanate tube, and an adjusting wheel connected to the rotating rod. The device achieves linear bending of the distal end of the tube body by driving the slider axially with the push button to move the outer sub-thiocyanate tube; by rotating the adjusting wheel or rotating the entire handle, the fixing block and catheter seat assembly rotate synchronously, achieving a precise 1:1 rotation of the inner and outer sub-thiocyanate tubes, thereby improving torque transmission efficiency, reducing the bending radius, and simplifying the operation process.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an interventional treatment delivery device. Background Technology

[0002] Interventional delivery devices are widely used in endovascular interventional procedures, such as in the treatment of ischemic stroke, where drugs or devices are delivered to the lesion site via catheters. Due to the complex and tortuous structure of human blood vessels, especially the small and winding branches of cerebral vessels, the maneuverability of the catheter affects the success rate and efficiency of the procedure. Traditional interventional catheters typically employ a pre-shaped tip design, adjusting direction by pushing, retracting, and twisting the catheter during the procedure. However, the pre-shaped tip is prone to deformation after repeated manipulations, leading to decreased guidance and prolonged procedure time.

[0003] Existing adjustable-bend catheters achieve tip bending angle adjustment through mechanisms such as wire drawing. These devices allow for real-time intraoperative adjustment of the bending angle. However, such adjustable-bend catheters still have shortcomings: firstly, their torque transmission performance is poor, resulting in slow turning response in tortuous blood vessels; secondly, the bending radius is relatively large, limiting their applicability in small blood vessels. Furthermore, the handle operation of existing adjustable-bend catheters is complex, often requiring multiple steps to adjust the tube's bending angle and direction, increasing the difficulty of operation. Summary of the Invention

[0004] To address the above problems, this invention provides an interventional therapy delivery device, which aims to solve the problems of improving torque transmission efficiency, reducing the bending radius, and simplifying the operation process during the bending process of the interventional therapy delivery device.

[0005] Some technical solutions of the present invention provide an interventional treatment delivery device, including a tube body and an operating handle. The tube body includes an inner thiopancreatography (Thiopan) tube and an outer thiopancreatography (Thiopan) tube, which are fixed at their distal ends and have a cutting groove provided at the distal end. The operating handle includes: a housing; a slider assembly disposed within the housing, which can reciprocate from the proximal end to the distal end, the slider assembly including a slider and a rotating shaft, the rotating shaft being fixedly connected to the proximal end of the outer thiopancreatography (Thiopan) tube; a push button slidably disposed within the housing and connected to the slider; a rotating rod rotatably disposed within the housing, with a sliding groove axially extending through its interior; a fixing block fixedly connected to the proximal end of the outer thiopancreatography (Thiopan) tube and slidably engaged with the sliding groove of the rotating rod; a catheter seat assembly disposed at the proximal end of the housing and fixedly connected to the proximal end of the inner thiopancreatography (Thiopan) tube, the catheter seat assembly being rotatably sleeved on the rotating rod; and an adjusting wheel rotatably disposed within the housing and connected to the rotating rod. The device drives the slider assembly and the fixing block through a push button, which drives the outer layer of the submersible tube to move axially, thereby compressing the far-end cutting groove to achieve tube bending. The bending operation is intuitive and linear. By adjusting the wheel or rotating the handle as a whole, the rotating rod, the fixing block and the guide tube seat assembly are rotated synchronously, achieving a 1:1 precise synchronous rotation of the inner and outer layers of the submersible tube. The torque transmission is direct and efficient, the direction adjustment response is rapid, and the overall structure is compact, simplifying the operation process.

[0006] Optionally, a transparent window is provided at the proximal end of the housing to facilitate intraoperative observation of the instruments' entry into the tube.

[0007] Optionally, the slider has a central hole, and the rotating shaft is rotatably inserted into the central hole of the slider.

[0008] Optionally, the operating handle also includes a push button limiting block connected to the push button. The push button limiting block has a push arm connected to the slider. The push arm effectively transmits the linear motion of the push button to the slider.

[0009] Optionally, a push button spring is also included, disposed between the push button and the push button limiting block. The spring provides a restoring force and engages the push button limiting block with the limiting teeth on the housing, thereby achieving reliable locking of the push button position and the tube bending angle.

[0010] Optionally, the operating handle also includes a spring-loaded element housed within the housing, featuring an arc-shaped protrusion that engages with an arc-shaped groove on the adjustment wheel. This provides tactile feedback when the adjustment wheel is rotated, improving operational precision.

[0011] Optionally, the conduit seat assembly includes a rotating component, which is fixedly connected to the inner layer of the submersible tube, and the limiting rib of the rotating component engages with the sliding groove of the rotating rod.

[0012] Optionally, the operating handle also includes a protective tube assembly, which is fitted over the outer layer of the submersible tube and fixed to the distal end of the housing. The protective tube assembly includes a protective tube and a limiting button, which engages with a limiting rib of the housing. This is used to protect the outer layer of the submersible tube segment that protrudes from the housing and to enhance the support rigidity of that area.

[0013] Optionally, the outer layer of the subwoofer tube has a groove that is wider in the middle and narrower at both ends, while the inner layer of the subwoofer tube has a groove of equal width. The groove shape that is wider in the middle and narrower at both ends helps to eliminate stress concentration, allowing the outer layer of the subwoofer tube to withstand greater deformation, thereby achieving a smaller bending radius and maintaining the roundness of the tube cavity; the equal width groove shape of the inner layer of the subwoofer tube facilitates processing and ensures uniformity of bending.

[0014] Optionally, the cutting pitch of both the inner and outer layers of the thiopancreatography (Thiopan) tube increases sequentially from distal to proximal. This achieves a gradual change in tube stiffness from soft at the distal end to rigid at the proximal end, allowing it to better conform to tortuous vascular pathways while providing sufficient pushing force at the proximal end. Attached Figure Description

[0015] Figure 1 A schematic diagram of the operating handle structure provided for some embodiments of the present invention.

[0016] Figure 2 This is a schematic diagram of the protective tube assembly structure provided for some embodiments of the present invention.

[0017] Figure 3 This is a schematic diagram of the locking structure between the limiting button and the housing provided in some embodiments of the present invention.

[0018] Figure 4 This is a schematic diagram of the protective tube slit structure provided for some embodiments of the present invention.

[0019] Figure 5 A schematic diagram of a slider assembly structure provided for some embodiments of the present invention.

[0020] Figure 6 This is a schematic diagram of the internal structure of the slider provided for some embodiments of the present invention.

[0021] Figure 7 This is a schematic diagram of the rotating shaft and slider cooperation structure provided for some embodiments of the present invention.

[0022] Figure 8 This is a schematic diagram of the slider assembly limiting structure provided for some embodiments of the present invention.

[0023] Figure 9 A schematic diagram of a rotating rod structure provided for some embodiments of the present invention.

[0024] Figure 10 This is a schematic diagram of a rotating rod slide groove structure provided for some embodiments of the present invention.

[0025] Figure 11 A schematic diagram of a fixing block structure provided for some embodiments of the present invention.

[0026] Figure 12 A schematic diagram of the adjusting wheel structure provided for some embodiments of the present invention.

[0027] Figure 13 A schematic diagram showing the detailed structure of the adjusting wheel provided for some embodiments of the present invention.

[0028] Figure 14 This is a schematic diagram of an elastic element structure provided for some embodiments of the present invention.

[0029] Figure 15 This is a schematic diagram of the structure of the elastic element and the adjusting wheel provided for some embodiments of the present invention.

[0030] Figure 16 This is a schematic diagram of the catheter seat assembly structure provided for some embodiments of the present invention.

[0031] Figure 17 This is a schematic diagram of the assembly structure of the conduit seat assembly provided for some embodiments of the present invention.

[0032] Figure 18 This is a schematic diagram of the rotating component structure provided for some embodiments of the present invention.

[0033] Figure 19 This is a schematic diagram of the rotating component from another perspective, provided for some embodiments of the present invention.

[0034] Figure 20 A schematic diagram of a transition component structure provided for some embodiments of the present invention.

[0035] Figure 21 This is a schematic diagram of the transition piece provided in some embodiments of the present invention from another perspective.

[0036] Figure 22 A schematic diagram of a pressure cap structure provided for some embodiments of the present invention.

[0037] Figure 23 This is a schematic diagram of the pressure cap structure from another perspective, provided for some embodiments of the present invention.

[0038] Figure 24 A schematic diagram of a Luer joint structure provided for some embodiments of the present invention.

[0039] Figure 25 This is a schematic diagram of the Luer joint from another perspective, provided for some embodiments of the present invention.

[0040] Figure 26This is a schematic diagram of the push button limiting block structure provided for some embodiments of the present invention.

[0041] Figure 27 This is a schematic diagram of the push button limiting block from another perspective, provided for some embodiments of the present invention.

[0042] Figure 28 A schematic diagram of a push button structure provided for some embodiments of the present invention.

[0043] Figure 29 This is a schematic diagram of the push button structure from another perspective, provided for some embodiments of the present invention.

[0044] Figure 30 This is a schematic diagram of the assembly structure of the push button and the push button limiting block provided for some embodiments of the present invention.

[0045] Figure 31 This is a schematic diagram of a spring placed on a slider boss, as provided in some embodiments of the present invention.

[0046] Figure 32 This is a schematic diagram of the push button and housing assembly structure provided for some embodiments of the present invention.

[0047] Figure 33 This is a schematic diagram of the upper shell structure provided for some embodiments of the present invention.

[0048] Figure 34 This is a schematic diagram of the upper shell structure from another perspective, provided for some embodiments of the present invention.

[0049] Figure 35 This is a schematic diagram of the lower shell structure provided for some embodiments of the present invention.

[0050] Figure 36 A schematic diagram of the overall assembly structure of the operating handle provided for some embodiments of the present invention.

[0051] Figure 37 A schematic diagram of the tube structure provided for some embodiments of the present invention.

[0052] Figure 38 A schematic diagram of the welding and fixing structure at the distal end of the sodium hypochlorite tube provided for some embodiments of the present invention.

[0053] Figure 39 This is a schematic diagram showing the cutting pitch and segment length of the inner layer submersible tube for some embodiments of the present invention.

[0054] Figure 40 This is a schematic diagram showing the cutting pitch and segment length of the outer layer of the submersible tube, provided for some embodiments of the present invention.

[0055] Figure 41 This is a schematic diagram showing the shape of the inner and outer layers of the submersible tube after cutting, as provided for some embodiments of the present invention.

[0056] Figure 42 This is a schematic diagram of the cut groove of a sodium hypochlorite tube provided for some embodiments of the present invention.

[0057] Figure 43 A schematic diagram of the cutting groove structure in the bending area of ​​the outer layer of the submersible tube provided for some embodiments of the present invention.

[0058] Figure 44 A schematic diagram of the cutting groove structure in the bending area of ​​the inner layer of the submersible tube provided for some embodiments of the present invention.

[0059] Figure 45 This is a schematic diagram illustrating the gradual change in tube hardness according to some embodiments of the present invention.

[0060] Figure 46 This is a schematic diagram showing the length of the outer layer covering of the tube as provided in some embodiments of the present invention.

[0061] Figure 47 This is a schematic diagram of the proximal and distal end tube structure provided for some embodiments of the present invention.

[0062] Figure 48 This is a schematic diagram of the position of a single developing ring provided for some embodiments of the present invention.

[0063] Figure 49 This is a schematic diagram showing the position of the dual imaging rings for some embodiments of the present invention.

[0064] Figure 50 This is a schematic diagram of the overall structure of the interventional therapy delivery device provided in some embodiments of the present invention.

[0065] Figure 51 This is a schematic diagram of the assembly of the inner layer submersible tube and the guide tube seat assembly provided for some embodiments of the present invention.

[0066] Figure 52 This is a schematic diagram of the assembly of the outer layer of the submersible tube and the fixing block for some embodiments of the present invention.

[0067] Figure 53 This is a schematic diagram of the assembly of the tube body, fixing block, and guide tube seat assembly provided for some embodiments of the present invention.

[0068] Figure 54 This is a schematic diagram of the assembly of the slider assembly, rotating rod, and tube body provided for some embodiments of the present invention.

[0069] Figure 55 This is a schematic diagram of the internal assembly structure of the operating handle provided for some embodiments of the present invention.

[0070] Figure 56 This is a schematic diagram of the distal end bending of the pipe body provided for some embodiments of the present invention.

[0071] Figure 57 This is a schematic diagram of tube orientation adjustment provided for some embodiments of the present invention.

[0072] Reference numerals: 1-Operating handle, 11-Protective tube assembly, 111-Protective tube, 1111-Fixing ring, 1112-Slit, 112-Limit button, 1121-Limit button limiting groove, 1122-Annular groove, 12-Slider assembly, 121-Slider, 1211-Slider limiting ring, 1212-Cylindrical boss, 1213-Slide table, 1214-Slider limiting rib, 122-Rotating shaft, 1221-Stop ring, 1222-Rotating shaft limiting groove, 1223-Rotating shaft injection hole, 13-Rotating rod, 131-Slide groove, 132-Rotating rod limiting groove, 133-Elliptical hole, 134-Rotating rod limiting ring, 14-Fixing block, 141-Sliding rib, 142-Fixing block injection hole, 15-Adjusting wheel, 15 1-Anti-slip groove, 152-Adjusting wheel support rib, 153-Central cylinder, 154-Arc-shaped groove, 155-Adjusting wheel limiting rib, 16-Elastic element, 161-Elastic arm, 162-Arc-shaped protrusion, 163-Elastic element limiting arm, 17-Conduit seat assembly, 171-Rotating element, 1711-Guide rib, 1712-Limiting arc, 1713-Rotating element limiting rib, 1714-Rotating element injection hole, 1715-Conduit bonding hole, 1716-Rotating element transition hole, 1717-Rotating element limiting post, 1718-Rotating element guide hole, 1719-Rotating element limiting groove, 1720-Rotating element limiting platform, 1702-Rotating element arc-shaped groove, 172-Sealing ring, 173-Transition element, 1731-Transition element Limiting post, 1732-Arc buckle, 1733-Adhesive injection hole for transition part, 1734-Limiting hole for transition part, 1735-Pressure platform for transition part, 1736-Limiting platform for transition part, 1737-Bonding hole for transition part, 1738-Transition hole for transition part, 174-Cap, 1741-Guide groove, 1742-Snap groove, 1743-Cap pressure platform, 1744-Limiting hole for cap, 175-Luer connector, 1751-Limiting disc, 1752-Limiting rib for Luer connector, 1753-Guide hole for Luer connector, 1754-Luer cone hole, 18-Push button limiting block, 181-Push arm, 182-Limiting tooth, 183-Limiting groove for push button limiting block, 184-Cylindrical hole, 185-Arc groove for push button limiting block, 19-Push button, 1 91-Anti-slip rib, 192-Push button limiting arm, 193-Push button support rib, 194-Arc-shaped buckle, 130-Upper shell, 1301-Push button groove, 1302-Upper shell limiting tooth, 13031-Upper shell first limiting rib, 13032-Upper shell second limiting rib, 13033-Upper shell third limiting rib, 13034-Upper shell fourth limiting rib, 13035-Upper shell fifth limiting rib, 13036-Upper shell sixth limiting rib, 13037-Upper shell seventh limiting rib, 13038-Upper shell eighth limiting rib, 1304-Upper shell adjusting wheel groove, 1305-Positioning post, 1306-Upper shell positioning groove, 1307-Upper shell transparent window, 1308-Nut hole, 1309-Upper shell limiting groove, 1310-Upper shell limiting platform1311-Stop groove, 140-Lower shell, 1401-Slide rail, 14021-Lower shell first limiting rib, 14022-Lower shell second limiting rib, 14023-Lower shell third limiting rib, 14024-Lower shell fourth limiting rib, 14025-Lower shell fifth limiting rib, 14026-Lower shell sixth limiting rib, 14027-Lower shell seventh limiting rib, 14028-Lower shell eighth limiting rib, 1403-Lower shell adjusting wheel groove 1404-Positioning hole, 1405-Lower shell positioning groove, 1406-Lower shell transparent window, 1407-Screw hole, 1408-Lower shell limiting groove, 1409-Lower shell limiting platform, 1410-Stop rib, 150-Push button spring, 2-Tube body, 21-Inner layer, 22-Middle layer, 221-Inner layer sodium hypochlorite tube, 222-Outer layer sodium hypochlorite tube, 23-Outer layer, 24-Developing ring, 25-Tail end tube, 26-Cutting groove. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] <Control handle 1>

[0075] In some embodiments, the interventional therapy delivery device includes an operating handle 1.

[0076] like Figure 1 As shown, the operating handle 1 includes a housing (upper housing 130 and lower housing 140), a protective tube assembly 11, a slider assembly 12, a rotating rod 13, a fixing block 14, an adjusting wheel 15, an elastic element 16, a guide seat assembly 17, a push button limiting block 18, a push button 19, and a push button spring 150.

[0077] like Figure 2 As shown, the protective tube assembly 11 includes a protective tube 111 and a limiting button 112. A retaining ring 1111 is provided on the protective tube 111; the two are integrally injection molded and pass through and are fixed to the center hole of the limiting button 112. The limiting button 112 is provided with a limiting button limiting groove 1121 and an annular groove 1122 for engaging and fixing with the limiting rib on the housing, such as... Figure 3 As shown. The protective tube 111 can be made of 304 stainless steel, 316 stainless steel, 304L stainless steel, or nickel-titanium alloy. The protective tube 111 can be a smooth rod or can have a slit 1112 to increase flexibility, such as... Figure 4 As shown.

[0078] like Figure 5As shown, the slider assembly 12 includes a slider 121 and a rotating shaft 122, with the rotating shaft 122 inserted into the center hole of the slider 121. Figures 6-8 As shown, the slider 121 has a slider limiting ring 1211 inside, which cooperates with the rotating shaft limiting groove 1222 on the rotating shaft 122, so that the rotating shaft 122 can rotate relative to the slider 121. One end of the rotating shaft 122 has a retaining ring 1221, and the other end has a rotating shaft injection hole 1223. The upper part of the slider 121 has a cylindrical boss 1212 for placing the push button spring 150; the bottom has a slide 1213, which can slide along the slide rail 1401 of the lower shell 140; and both ends have slider limiting ribs 1214 for pushing the push button limiting block 18.

[0079] like Figure 9 and Figure 10 As shown, the rotating rod 13 has symmetrically arranged axially penetrating grooves 131 inside, and a rotating rod limiting groove 132 on the outside of one end for placing the adjusting wheel 15; the other end has a penetrating elliptical hole 133 to facilitate the subsequent dispensing operation of the rotating shaft 122. A rotating rod limiting ring 134 is also provided near the end of the elliptical hole 133 to confine the rotating rod 13 within the housing. Figure 11 As shown, the fixing block 14 is provided with a sliding rib 141 and a fixing block injection hole 142. The sliding rib 141 cooperates with the sliding groove 131 in the rotating rod 13 and can slide along the sliding groove 131.

[0080] like Figure 12 and Figure 13 As shown, the outer surface of the adjusting wheel 15 is provided with an anti-slip groove 151. A central cylinder 153 is connected to one side of the adjusting wheel via an adjusting wheel support rib 152, and adjusting wheel limiting ribs 155 are symmetrically arranged on the inner side of the central cylinder 153; the other side is provided with a flower-shaped arc-shaped groove 154. The outer side of the elastic element 16 cylinder is symmetrically provided with arc-shaped elastic arms 161, with an arc-shaped protrusion 162 in the middle of the elastic arm 161, and an elastic element limiting arm 163 is provided in a direction perpendicular to the elastic arm 161, such as... Figure 14 As shown. The elastic element 16 is limited in the housing by the elastic element limiting arm 163 thereon, so that the elastic element limiting arm 163 cooperates with the adjusting wheel 15, and the arc-shaped protrusion 162 cooperates with the arc-shaped groove 154 on the adjusting wheel 15, as shown. Figure 15 As shown.

[0081] like Figure 16 As shown, the catheter seat assembly 17 includes a rotating member 171, a sealing ring 172, a transition member 173, a gland 174, and a Luer connector 175. The transition member 173 is secured within the rotating member 171 by the gland 174. The sealing ring 172 is positioned between the rotating member 171 and the transition member 173. The Luer connector 175 is fixed to the proximal end of the transition member 173 by adhesive bonding. Figure 17As shown. After the catheter seat assembly 17 is assembled, the rotating part 171 and the pressure cap 174 are integrated, the transition part 173 and the Luer connector 175 are integrated, and the rotating part 171 and the pressure cap 174 can rotate relative to the transition part 173.

[0082] like Figure 18 As shown, a rotating component limiting rib 1713 and a through rotating component injection hole 1714 are provided on the outer surface of the small end cylinder of the rotating component 171; symmetrical guide ribs 1711 are provided on the outer surface of the large end cylinder, one end face of the guide rib 1711 is flush with the end face of the large end cylinder, and a limiting arc 1712 is also provided near the end face of the large end cylinder. A conduit bonding hole 1715 and a rotating component transition hole 1716 are provided inside the small end cylinder of the rotating component 171; a rotating component limiting post 1717 is provided inside the large end cylinder, and a conical rotating component guide hole 1718 is provided inside the rotating component limiting post 1717, which communicates with the rotating component transition hole 1716; a rotating component limiting groove 1719 and a rotating component limiting platform 1720 are provided at the bottom end inside the large end cylinder, and a rotating component arc groove 1702 is also provided at the upper end, as shown... Figure 19 As shown.

[0083] like Figure 20 and Figure 21 As shown, the small end of the transition piece 173 is provided with a transition piece limiting post 1731, and the large end is provided with a transition piece injection hole 1733. The outer surface of the annular platform between the small end and the large end is provided with an arc buckle 1732. The small end is provided with a transition piece limiting hole 1734. A transition piece pressing platform 1735 and a transition piece limiting platform 1736 are provided on one end face of the stepped annular platform. The large end is provided with a transition piece bonding hole 1737. A conical transition piece transition hole 1738 is also provided between the transition piece bonding hole 1737 and the transition piece limiting hole 1734. One end of the transition piece transition hole 1738 is connected to the transition piece limiting hole 1734, and the other end is connected to the transition piece bonding hole 1737.

[0084] like Figure 22 and 23 As shown, guide grooves 1741 are symmetrically provided on the cylindrical surface inside the cover 174, and a snap-fit ​​groove 1742 is also provided on the cylindrical surface inside the cover. A cover pressing platform 1743 is also provided at the bottom inside the cover. A cover limiting hole 1744 is also provided between the cover pressing platform 1743 and the end face of the cover 174.

[0085] like Figure 24 and 25As shown, a limiting disc 1751 is provided in the middle of the outer surface of the Luer connector 175, and Luer connector limiting ribs 1752 are symmetrically arranged on the limiting disc 1751. One end of the Luer connector 175 has a Luer connector guide hole 1753, and the other end has a Luer tapered hole 1754. The Luer connector guide hole 1753 and the Luer tapered hole 1754 are interconnected.

[0086] like Figure 26 and 27 As shown, the lower part of the push button limiting block 18 has four push arms 181, the outer edges of which are flush with the edges of the push button limiting block 18. The upper surface has limiting teeth 182, with at least one limiting tooth 182 on the same side, and the limiting teeth 182 on both sides are symmetrically distributed. The shape of the limiting teeth 182 can be triangular, trapezoidal, or arc-shaped. On both sides of the upper part of the push button limiting block 18, perpendicular to the limiting teeth 182, there are also push button limiting block limiting grooves 183. The lower inner side of the push button limiting block 18 has a trapezoidal cylindrical hole 184, and the upper part has a cylindrical hole with a push button limiting block arc groove 185. The two cylindrical holes are not connected.

[0087] like Figure 28 and Figure 29 As shown, the upper outer surface of the push button 19 is provided with anti-slip ribs 191, and the lower surface has symmetrical push button limiting arms 192. Push button supporting ribs 193 are also provided between the push button limiting arms 192 and the inner edge of the push button 19, for connecting the push button limiting arms 192 and the inner edge of the push button 19. A cylinder is provided at the center of the push button 19, and an arc-shaped buckle 194 is provided on the surface of the cylinder. The arc-shaped buckle 194 cooperates with the arc-shaped groove 185 of the push button limiting block 18. Figures 30-32 As shown, the upper part of the push button limiting block 18 is inserted into the push button groove 1301 of the upper shell 130, and the push button limiting arm 192 of the push button 19 is inserted into the push button limiting block limiting groove 183 of the push button limiting block 18. Pressing the push button 19 causes its arc-shaped buckle 194 to engage with the arc-shaped groove 185 of the push button limiting block 18. The push button spring 150 is placed on the cylindrical boss 1212 of the slider 121, which lifts the push button limiting block 18, so that its limiting tooth 182 engages with the upper shell limiting tooth 1302 of the upper shell 130 to achieve locking.

[0088] like Figure 33 and Figure 34As shown, a push-button groove 1301 penetrating the shell is provided near the distal end of the upper shell 130, and the length of the push-button groove 1301 meets the requirements of the bending radius. An upper shell limiting tooth 1302 is provided below the push-button groove 1301, which cooperates with the limiting tooth 182 on the push-button limiting block 18 to limit the position of the push-button 19. An arc-shaped groove for securing the protective tube assembly 11 is provided at the front distal end of the upper shell 130. A second upper shell limiting rib 13032 and a third upper shell limiting rib 13033 are respectively provided at both ends of the push-button groove 1301. An arc-shaped groove is provided on the second upper shell limiting rib 13032 to avoid the retaining ring 1221 at the distal end of the rotating shaft 122; an arc-shaped groove is provided on the third upper shell limiting rib 13033 to avoid the cylinder near the rotating component 171, facilitating the rotation of the rotating shaft 122. A first limiting rib 13031 is also provided between the second limiting rib 13032 of the upper shell and the arc-shaped groove at the far end of the upper shell 130, and is locked in the limiting button limiting groove 1121 of the protective tube assembly 11.

[0089] Near the proximal end of the third limiting rib 13033 of the upper shell 130, there are also sequentially arranged a fourth limiting rib 13034, a fifth limiting rib 13035, and a sixth limiting rib 13036, each with an arc-shaped groove. The arc-shaped groove on the fourth limiting rib 13034 is engaged in the rotating rod limiting ring 134 of the rotating rod 13; the arc-shaped groove on the fifth limiting rib 13035 serves as a support ring at the rotating rod limiting groove 132 of the rotating rod 13; and the arc-shaped groove on the sixth limiting rib 13036 supports the elastic element 16. An upper shell adjusting wheel groove 1304 is provided between the fifth limiting rib 13035 and the sixth limiting rib 13036 of the upper shell. A positioning post 1305 is also provided on one side of the shell of the fifth limiting rib 13035 of the upper shell. An upper shell positioning groove 1306 is also provided at the bottom of one side of the sixth limiting rib 13036 of the upper shell for mounting the elastic element 16.

[0090] A transparent viewing window 1307 is provided near the proximal end of the upper shell 130, which can be used to observe the state of instruments when they enter, for example, the tube 2. Nut holes 1308 for nut insertion are provided at both ends of the upper shell 130. The nut holes 1308 at the tail end of the upper shell 130 are connected by an eighth limiting rib 13038. An arc-shaped groove is also provided on the eighth limiting rib 13038 to support the transition piece 173 in the catheter seat assembly 17. A seventh limiting rib 13037 is also provided at the bottom left side of the eighth limiting rib 13038 to limit the pressure cap 174 in the catheter seat assembly 17. An upper shell limiting groove 1309 and an upper shell limiting platform 1310 are provided at the proximal tail end of the upper shell 130 for the locking of the Luer connector 175. Stop grooves 1311 are provided at both the distal front and proximal tail ends of the upper shell 130 to prevent positional misalignment during assembly of the upper and lower shells.

[0091] like Figure 35 As shown, an arc-shaped groove for engaging the protective tube assembly 11 is provided at the distal front of the lower shell 140. A slide rail 1401 is provided on the lower shell 140 at a position corresponding to the push button groove 1301 of the upper shell 130. A second limiting rib 14022 and a third limiting rib 14023 of the lower shell are respectively provided at both ends of the slide rail 1401. A first limiting rib 14021 of the lower shell is also provided between the second limiting rib 14022 and the arc-shaped groove at the distal front of the lower shell 140. The first limiting rib 14021 of the lower shell is engaged in the limiting button limiting groove 1121 of the protective tube assembly 11. An arc-shaped groove is provided on the second limiting rib 14022 of the lower shell to avoid the retaining ring 1221 at the distal end of the rotating shaft 122; an arc-shaped groove is also provided on the third limiting rib 14023 of the lower shell to avoid the cylinder at the tail of the rotating part 171, so as to facilitate the rotation of the rotating shaft 122.

[0092] Near the proximal end of the third limiting rib 14023 of the lower shell 140, a fourth limiting rib 14024, a fifth limiting rib 14025, and a sixth limiting rib 14026 are sequentially provided, each with an arc-shaped groove. The arc-shaped groove on the fourth limiting rib 14024 is engaged in the rotating rod limiting ring 134 of the rotating rod 13; the arc-shaped groove on the fifth limiting rib 14025 serves as a support ring at the rotating rod limiting groove 132 of the rotating rod 13; and the arc-shaped groove on the sixth limiting rib 14026 supports the elastic element 16. A lower shell adjusting wheel groove 1403 is also provided between the fifth limiting rib 14025 and the sixth limiting rib 14026 of the lower shell. A positioning hole 1404 is provided on one side of the shell of the fifth limiting rib 14025. A lower shell positioning groove 1405 is also provided on the bottom side of the sixth limiting rib 14026 for locking and fixing the elastic element 16. A lower shell transparent window 1406 is also provided at the proximal end of the lower shell 140 for observing the state of the instrument when it enters, for example, the tube 2. Screw holes 1407 are provided at both the distal front and proximal tail ends of the lower shell 140. The screw holes 1407 at the proximal tail end of the lower shell 140 are connected by the eighth limiting rib 14028 of the lower shell. The eighth limiting rib 14028 of the lower shell also has an arc-shaped groove to support the transition piece 173 in the guide tube seat assembly 17. A seventh limiting rib 14027 of the lower shell is also provided at the bottom left side of the eighth limiting rib 14028 of the lower shell to limit the pressure cap 174 in the guide tube seat assembly 17. A lower shell limiting groove 1408 and a lower shell limiting platform 1409 are also provided at the proximal tail end of the lower shell 140 for the locking of the Luer connector 175. Stop ribs 1410 are provided at both ends of the lower shell 140 to prevent positional misalignment between the upper and lower shells during assembly.

[0093] Assembled operating handle 1 Figure 36As shown. The protective tube assembly 11 is snapped onto the front of the housing; the slider assembly 12 is placed on the slide rail 1401 of the lower housing 140; the push button limiting block 18 and the push button 19 are assembled with the slider assembly 12 on the upper housing 130 via the push button spring 150; the rotating rod 13 is snapped onto the limiting rib of the housing via its rotating rod limiting ring 134; the adjusting wheel 15 is inserted into the rotating rod limiting groove 132 of the rotating rod 13 and is located in the adjusting wheel groove 1304 of the upper housing and the adjusting wheel groove 1403 of the lower housing; The elastic element 16 is engaged in the upper shell positioning groove 1306 and the lower shell positioning groove 1405 of the housing, and its arc-shaped protrusion 162 matches the arc-shaped groove 154 of the adjusting wheel 15; the guide seat assembly 17 is engaged in the near end of the housing and is fixed by the limiting plate 1751 and the limiting rib 1752 of the Luer connector 175 with the upper shell limiting groove 1309, the lower shell limiting groove 1408, the upper shell limiting platform 1310, and the lower shell limiting platform 1409 of the housing.

[0094] <Tube body 2>

[0095] In some embodiments, the interventional therapy delivery device includes a tube body 2.

[0096] like Figure 37 As shown, the tube body 2 includes an inner layer 21, a middle layer 22 and an outer layer 23 from the inside to the outside. A developing ring 24 is provided at the far end and a tail tube 25 is provided at the near end.

[0097] The inner layer 21 is formed by fusing at least two different polymer tubes together using a heat-sealing process to create a polymer composite tube. The inner layer of the composite tube uses a self-lubricating PTFE tube as a liner. The outer layer of the composite tube can be either TPU or Pebax, or a combination of both. The TPU material has a hardness of 60 A to 84 A, and the Pebax material has a hardness of 25 D to 40 D. The outer layer of the composite tube can use the same material and hardness; it can also use the same material with different hardnesses in multiple segments (at least two segments); or it can use different materials with different hardnesses in multiple segments (at least two segments). When using different materials or different hardnesses in multiple segments, the hardness of the composite tube should increase sequentially from one end to the other to ensure a smooth hardness transition in the inner layer 21 tube body 2, and the softest end of the composite tube should correspond one-to-one with the farthest end of the hyaluronic acid tube.

[0098] The intermediate layer 22 is composed of two coaxially arranged sodium hypochlorite tubes, with their distal end faces flush. The inner sodium hypochlorite tube 221 is longer than the outer sodium hypochlorite tube 222. At least one developing ring 24 is located at the distal end of each sodium hypochlorite tube. The distalest developing ring 24 is situated between the inner and outer sodium hypochlorite tubes 221 and is flush with the distal end faces of both tubes. At the distal end, the developing ring 24 is laser-welded to the inner sodium hypochlorite tube 221 and to the outer sodium hypochlorite tube 222, forming a single unit that constitutes the intermediate layer 22. Figure 38 As shown. At the proximal end, the inner submersible tube 221 and the outer submersible tube 222 can slide relative to each other.

[0099] The inner and outer sodium hypochlorite tubes 221 and 222 can be made of 304 stainless steel, 316 stainless steel, 304L stainless steel, nickel-titanium alloy, or cobalt-chromium alloy. The inner and outer sodium hypochlorite tubes can be made of the same material to form the intermediate layer 22, or they can be made of different materials combined in pairs to form the intermediate layer 22. The outer diameter of the outer sodium hypochlorite tube 222 ranges from 0.88 mm to 1.30 mm, the wall thickness from 0.04 mm to 0.08 mm, and the length from 1430 mm to 1680 mm. The outer diameter of the inner sodium hypochlorite tube 221 ranges from 0.72 mm to 1.14 mm, the wall thickness from 0.04 mm to 0.08 mm, and the length from 1445 mm to 1695 mm.

[0100] At least five sets of laser-cut regions with different pitches are made along the central axis on the inner layer of the sodium hypochlorite tube 221. The segment length (i.e., cutting length L) of each set of cutting regions is different, and the pitch (i.e., cutting pitch D) of each set of inner cutting grooves increases sequentially from the far end to the near end of the inner layer of the sodium hypochlorite tube 221 to achieve the purpose of gradual hardness change of the tube body 2. Figure 39 As shown, the cutting groove pitch and segment lengths from the distal end to the proximal end of the inner layer of the submersible tube 221 are as follows: the first segment cutting length L1 is 8 mm to 15 mm, and the pitch D1 is 0.08 mm to 0.12 mm; the second segment cutting length L2 is 70 mm to 95 mm, and the pitch D2 is 0.11 mm to 0.15 mm; the third segment cutting length L3 is 55 mm to 85 mm, and the pitch D3 is 0.13 mm to 0.20 mm; the fourth segment cutting length L4 is 65 mm to 95 mm, and the pitch D4 is 0.15 mm to 0.25 mm; the fifth segment cutting length L5 is 75 mm to 90 mm, and the pitch D5 is 0.24 mm to 0.43 mm.

[0101] At least five sets of laser-cut regions with different pitches are made along the central axis on the outer layer of the sodium hypochlorite tube 222. The segment length of each set of cut regions is different, and the pitch of each set of cut grooves increases sequentially from the far end to the near end of the outer layer of the sodium hypochlorite tube 222 to achieve the purpose of gradual change in the hardness of the tube body 2. Figure 40 As shown, the cutting groove pitch and segment lengths from the distal end to the proximal end of the outer layer of the submersible tube 222 are as follows: the first segment cutting length L6 is 35 mm to 50 mm, and the pitch D6 is 0.08 mm to 0.12 mm; the second segment cutting length L7 is 55 mm to 75 mm, and the pitch D7 is 0.14 mm to 0.18 mm; the third segment cutting length L8 is 70 mm to 95 mm, and the pitch D8 is 0.16 mm to 0.23 mm; the fourth segment cutting length L9 is 80 mm to 110 mm, and the pitch D9 is 0.19 mm to 0.30 mm; the fifth segment cutting length L10 is 45 mm to 65 mm, and the pitch D10 is 0.31 mm to 0.50 mm.

[0102] After the gradual change in hardness between the inner and outer layers of the sodium hypochlorite tube is laser-cut, the shape of the cut groove is as follows: Figure 41 As shown; after unfolding the cut submersible tube into a flat state, the slit pitch of each cut segment can be observed, such as... Figure 42 As shown.

[0103] At the farthest ends of both the inner and outer layers of the submersible tube, laser-cut bending sections are present, with cutting lengths ranging from 5 mm to 20 mm. The cutting groove 26 in the bending area of ​​the outer submersible tube 222 has a structure that is wider in the middle and narrower at both ends, similar to an elongated ellipse. This groove design eliminates stress concentration, allowing the ridges on both sides of the outer submersible tube 222 to withstand greater tensile or compressive deformation during bending without breaking or buckling. This allows the tube body 2 to reach a more extreme bending radius while maintaining the roundness of the tube cavity and preventing flattening. The pitch of the cutting groove 26 is 0.18 mm to 0.35 mm, the width of the middle section of the cutting groove 26 is 0.1 mm to 0.25 mm, and the width at both ends is 0.04 mm to 0.17 mm. Figure 43 As shown. The cutting groove 26 in the bending area of ​​the inner layer of the submersible 221 has a uniform width structure, with a cutting pitch of 0.18 mm to 0.35 mm and a width of 0.08 mm to 0.15 mm. Figure 44 As shown.

[0104] After the two sodium hypochlorite tubes are assembled, based on the different cutting lengths and cutting pitches of each segment of the inner and outer sodium hypochlorite tubes, tube body 2 is ultimately constructed into various hardness sections, such as... Figure 45 As shown.

[0105] The outer layer 23 can be made of either TPU or Pebax, or a combination of both. The TPU material can have a hardness of 60 A to 85 A, and the Pebax material can have a hardness of 25 D to 40 D. The outer layer 23 can be made of the same material and with the same hardness; it can also be made of the same material with different hardnesses in multiple segments (at least two segments); or it can be made of different materials with different hardnesses in multiple segments (at least two segments). When using different materials or hardnesses in multiple segments, the hardness distribution of the outer layer 23 from the distal end to the proximal end of the tube body 2 should follow a progressively increasing principle. The outer layer 23 is heat-sealed onto the outer layer of the intermediate layer 22, with a covering length A of 80 cm to 120 cm. A coating is applied to the covered outer layer 23, such as... Figure 46 As shown.

[0106] A tail end tube 25 is provided at the tail end of the inner layer 221 near the proximal end of the tube body 2. Half of the tail end tube 25 is located at the proximal tail end of the inner layer 221, and the other half is located at the proximal tail end of the inner layer 21. Figure 47 As shown, the proximal tail portion of the inner layer 221 and the proximal tail portion of the inner layer 21 are fixed together by a heat-sealing process. The material of the tail tube 25 can be TPU, Pebax, or nylon, where the hardness of TPU can be selected from 70 A to 98 A, the hardness of Pebax can be selected from 55 D to 72 D, and the hardness of nylon can be selected from 85 A to 75 D.

[0107] Since the outer layer 23 is in contact with human tissue, a coating is applied at a length of 60 cm to 115 cm from the distal end of the tube body 2. This coating may be selected from hydrophilic PVP coating material or PAM coating material, heparin coating material or phosphocholine coating material with anticoagulant function, or disposable antibacterial colony deposition coating material with antibacterial function.

[0108] At least one developing ring 24 is provided at the distal end of the tube body 2. When there is only one developing ring 24, the developing ring 24 is located between the inner layer thiopancreatic tube 221 and the outer layer thiopancreatic tube 222, and is flush with the distal end face of the two thiopancreatic tubes. The distance B between the developing ring 24 and the distal end face of the tube body 2 is 0.5 mm to 1.5 mm. Figure 48 As shown. When two developing rings 24 are provided, one developing ring 24 is configured as described above, and the other developing ring 24 is located on the outer sodium hypotube 222, with the distance between the two developing rings 24 being 20mm~40mm, as shown. Figure 49 As shown. The developing ring 24 can be made of platinum-iridium alloy, tantalum or tungsten, and the developing ring 24 can have an open or circular structure.

[0109] In this embodiment, the interventional therapy delivery device includes an operating handle 1 and a tube body 2, such as Figure 50As shown.

[0110] like Figures 51-53 As shown, the inner layer of the submersible tube 221 near the proximal end of the tube body 2 is inserted into the guide tube assembly 17 as follows. Figure 19 The guide tube is inserted into the bonding hole 1715 as shown, with the end face abutting against the step, and glue is injected to cure the bonding. The fixing block 14 is inserted near the end of the outer sodium hypotube 222, so that the end of the outer sodium hypotube 222 protrudes approximately 1 mm to 3 mm from the end face of the fixing block 14, and then... Figure 11 The fixing block is injected with glue through the glue injection hole 142 as shown, and then cured and bonded.

[0111] like Figure 54 As shown, before assembling the slider assembly 12, the adjusting wheel 15 and the elastic element 16 are first installed onto the rotating rod 13. Then, the end of the rotating rod 13 without the elliptical hole 133 is inserted along the sliding rib 141 of the fixing block 14 until the sliding groove 131 of the rotating rod 13 is engaged with the guide rib 1711 of the rotating element 171 of the guide tube seat assembly 17. Next, the rotating shaft 122 of the slider assembly 12 is inserted into the outer layer of the sodium hypochlorite tube 222, so that the end of the rotating shaft 122 with the rotating shaft glue injection hole 1223 is inserted into the elliptical hole 133 of the rotating rod 13, and glue is injected through the rotating shaft glue injection hole 1223 for curing, thus fixing the slider assembly 12 to the outer layer of the sodium hypochlorite tube 222.

[0112] like Figure 55 As shown, the protective tube assembly 11 is fitted onto the outer layer of the sodium hypochlorite tube 222 and snapped onto the front of the housing. The slider assembly 12, which is connected to the tube body 2, is placed at the rightmost end of the slide rail 1401 of the lower housing 140. The adjusting wheel 15 is placed into the upper housing adjusting wheel groove 1304 and the lower housing adjusting wheel groove 1403 of the housing, and the position of the elastic element 16 is adjusted so that it is snapped into the upper housing positioning groove 1306 and the lower housing positioning groove 1405 of the housing. The rotating rod 13 is locked at the limiting rib of the housing. The conduit seat assembly 17 is snapped into the proximal tail of the housing and fixed in place by the limiting disc 1751 and limiting rib 1752 of the Luer connector 175, which engage with the upper housing limiting groove 1309, the lower housing limiting groove 1408, the upper housing limiting platform 1310, and the lower housing limiting platform 1409. Simultaneously, the pressure cap 174 abuts against the seventh limiting rib 13037 of the upper housing and the seventh limiting rib 14027 of the lower housing, limiting the distal front portion of the conduit seat assembly 17. Finally, the upper housing 130 is closed and secured with screws.

[0113] In this embodiment, the distal bending and angle adjustment of the interventional treatment delivery device are achieved through push button 19 and adjustment wheel 15.

[0114] When a remote bend is required, press down on the push button 19 to overcome the spring force of the push button spring 150, causing the limiting teeth 182 of the push button limiting block 18 to disengage from the upper shell limiting teeth 1302, thus unlocking the push button 19. Continue pressing and push the push button 19 forward; the push arm 181 of the push button limiting block 18 will drive the slider 121 to slide forward along the slide rail 1401. Because the slider 121 engages with the rotation shaft limiting groove 1222 of the rotation shaft 122 through its internal slider limiting ring 1211, it drives the rotation shaft 122 and the outer layer of the submersible tube 222 fixedly connected to it to move forward. The fixing block 14 then slides within the slide groove 131 of the rotating rod 13. Since the outer layer of the sodium hypochlorite tube 222 and the inner layer of the sodium hypochlorite tube 221 are welded and fixed at the distal end, the forward movement of the outer layer of the sodium hypochlorite tube 222 will compress the cutting groove 26 in its distal bending area, driving the inner layer of the sodium hypochlorite tube 221 to bend along its cutting groove 26, thus achieving bending at the distal end of the tube body 2. After reaching the required angle, the push button 19 is released, and the push button spring 150 returns to its original position, causing the limiting tooth 182 of the push button limiting block 18 to engage with the upper shell limiting tooth 1302, locking the push button 19 and maintaining the bent state. The maximum bending angle of the tube body 2 is 180°. Figure 56 As shown.

[0115] There are two ways to adjust the bending angle. One way is to rotate the adjusting wheel 15. When it is necessary to adjust the direction of the bent tube 2, rotate the adjusting wheel 15 clockwise or counterclockwise. The adjusting wheel 15 drives the rotating rod 13 to rotate synchronously through its adjusting wheel limiting rib 155. Since the sliding rib 141 of the fixed block 14 and the rotating part limiting rib 1713 of the rotating part 171 of the guide tube assembly 17 are both located in the sliding groove 131 of the rotating rod 13, the rotating rod 13 drives the fixed block 14 and the rotating part 171 to rotate together. The fixed block 14 is fixed to the outer layer of the submersible tube 222, and the rotating part 171 is fixed to the inner layer of the submersible tube 221, and the distal ends of the two submersible tubes are fixed, thereby achieving a 1:1 synchronous rotation of the inner layer of the submersible tube 221 and the outer layer of the submersible tube 222, accurately adjusting the bending direction of the distal end of the tube 2. The adjustment range of the direction angle is ±360°. Figure 57 As shown. During rotation, the arc-shaped protrusion 162 of the elastic element 16 engages with the arc-shaped groove 154 of the adjusting wheel 15, providing tactile feedback. The Luer connector 175 is fixed by the housing and does not rotate.

[0116] Another method is to rotate the entire operating handle 1. The housing of the operating handle 1 can be rotated directly clockwise or counterclockwise. In this case, the elastic element 16 fixed inside the housing restricts the adjusting wheel 15 through its arc-shaped protrusion 162, causing the adjusting wheel 15, rotating rod 13, fixing block 14, rotating element 171, and the inner and outer submersible tubes 221 connected thereto to rotate synchronously with the housing, thereby adjusting the bending direction of the distal end of the tube 2.

[0117] The interventional treatment delivery device of this embodiment controls the axial movement of the outer sub-thiocyanate tube 222 by linking the push button 19 with the slider assembly 12, thereby achieving linear adjustment of the bending angle of the distal end of the tube 2. The operation is intuitive and simple. By setting an adjustment wheel 15 linked with the rotating rod 13, or by directly rotating the entire housing of the operating handle 1, the fixed block 14 and the rotating component 171 are driven to rotate synchronously, thereby achieving a 1:1 precise synchronous rotation of the inner sub-thiocyanate tube 221 and the outer sub-thiocyanate tube 222. This makes the adjustment of the bending direction of the distal end of the tube 2 more accurate and responsive. At the same time, the cooperation between the elastic component 16 and the adjustment wheel 15 provides a good operating feel, and the engagement between the push button limit block 18 and the upper shell 130 ensures reliable locking of the bending angle.

[0118] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An interventional therapy delivery device, characterized by, include: The tube body includes an inner layer of sodium thiosulfate tube and an outer layer of sodium thiosulfate tube, wherein the inner layer of sodium thiosulfate tube and the outer layer of sodium thiosulfate tube are fixed at a distal end, and a cutting groove is provided at the distal end; Operating handle, including: case; A slider assembly, disposed within the housing, is capable of reciprocating from the proximal end to the distal end. The slider assembly includes a slider and a rotating shaft, the rotating shaft being fixedly connected to the proximal end of the outer layer of the submersible tube. A push button is slidably disposed in the housing and connected to the slider; A rotating rod is rotatably disposed inside the housing, and a sliding groove is axially provided inside it; A fixing block is fixedly connected to the near end of the outer layer of the sodium hypochlorite tube and slidably fitted into the groove of the rotating rod; A catheter seat assembly is disposed at the proximal end of the housing and fixedly connected to the proximal end of the inner layer of the submersible tube. The catheter seat assembly is rotatably sleeved on the rotating rod. The catheter seat assembly includes a rotating component, which is fixedly connected to the inner layer of the submersible tube. The limiting rib of the rotating component engages with the sliding groove of the rotating rod. An adjusting wheel is rotatably mounted on the housing and connected to the rotating rod.

2. The interventional therapy delivery device as described in claim 1, characterized in that, A transparent viewing window is provided near the end of the housing.

3. The interventional therapy delivery apparatus of claim 1, wherein, The slider has a central hole, and the rotating shaft is rotatably inserted into the central hole of the slider.

4. The interventional therapy delivery apparatus of claim 1, wherein, The operating handle also includes a push button limiting block connected to the push button. The push button limiting block has a push arm connected to the slider.

5. The interventional therapy delivery apparatus of claim 4, wherein, It also includes a push button spring, which is disposed between the push button and the push button limiting block.

6. The interventional therapy delivery device as described in claim 1, characterized in that, The operating handle also includes an elastic element disposed within the housing, having an arc-shaped protrusion that engages with the arc-shaped groove on the adjusting wheel.

7. The interventional therapy delivery apparatus of claim 1, wherein, The operating handle also includes a protective tube assembly, which is sleeved on the outer layer of the sodium hypotube and fixed to the far end of the housing. The protective tube assembly includes a protective tube and a limiting button, which engages with the limiting rib of the housing.

8. The interventional therapy delivery apparatus of claim 1, wherein, The outer layer of the sodium hypochlorite tube has a cutting groove that is wide in the middle and narrow at both ends, while the inner layer of the sodium hypochlorite tube has a cutting groove of equal width.

9. The interventional therapy delivery apparatus of claim 1, wherein, The cutting pitch of both the inner and outer sub-thallium tubes increases sequentially from the distal end to the proximal end.

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