Puncture cannula device

Abstract

The utility model relates to medical surgical operation instrument technical field, concretely is a puncture casing device, including puncture mechanism and casing mechanism, the puncture mechanism includes handle assembly and lock ware subassembly, handle assembly includes handle cover, handle, drive rod, stretch spring and Y piece, the casing mechanism includes casing assembly, gas injection subassembly and suturing subassembly. The puncture casing device disclosed by the utility model has reasonable structure design, and the cooperation posture of puncture mechanism and casing mechanism can be self -adjusting, which is beneficial to carrying out high -precision abdominal cavity interventional operation.

Description

Technical Field

[0001] This utility model relates to the field of medical surgical instruments, specifically a puncture cannula device. Background Technology

[0002] The instruments used in laparoscopic surgery include a puncture assembly and a suturing assembly. The puncture assembly is used to pass through the skin and fascia and serves as a channel for the suturing assembly or the laparoscopy to pass through. The suturing assembly is used to suture the skin tissue and fascia. For example, patent document CN105636526A discloses a cannula and wound closure device, including a cannula and an outer cannula. The cannula includes a proximal end, a distal end, and a shaft. The shaft includes a narrow portion near the distal end, defining at least one recess. The shape and size of the recess are adapted to accommodate fascial tissue. The recess ends at a distal end of the recess, and a generally proximal surface of the shaft is configured directly below the narrow portion. The shape and size of the proximal surface and the narrow portion are adapted to stabilize the cannula within the abdominal wall via the fascia. The cannula is sized to accommodate the cannula and includes at least one of a plurality of anchors and a plurality of sutures, detachably connected to an inner wall of the cannula. The cannula includes an anchoring and advancing mechanism, which includes at least one anchoring protrusion element configured to extend outward to a shaft of the cannula to engage the anchor of the outer cannula and advance the anchor into the tissue. This device enables dual operations of abdominal wall puncture and fascial suturing. When in use, the device employs a ratchet design for the release mechanism used to set the anchor, which is combined with a sliding release mechanism to push, lock, and retract the anchoring spike element. The complexity of the structure results in extremely high precision requirements for the fit between the various components of the device, and the manufacturing cost remains high.

[0003] Therefore, optimizing the structure of the puncture cannula device to meet the high requirements of surgery while reducing costs is a key issue that needs to be addressed in this industry. Utility Model Content

[0004] The purpose of this invention is to provide a puncture cannula device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A puncture-cannula device, comprising a puncture mechanism and a cannula mechanism; The puncture mechanism includes a handle assembly and a locking assembly. The handle assembly includes a handle cover, a handle, a drive rod, a tension spring, and a Y-shaped component. A hanging post is provided at the lower end of the handle cover. The handle is fixedly connected to the drive rod, and the upper end of the drive rod is connected to the handle cover via a hook. The upper end of the drive rod contacts the lower end face of the hanging post. Several axially extending guide grooves are provided on the outer side of the drive rod. Two symmetrically arranged locking holes are provided on the upper part of the drive rod. A sliding hole is provided in the middle of the drive rod, and a sliding hole is provided in the lower part of the drive rod. The width of the sliding hole is smaller. The Y-shaped component has a hanging hole on its width relative to the second sliding hole. The upper end of the tension spring is connected to the hanging post, and the lower end is connected to the hanging hole. The upper end of the Y-shaped component has two outwardly opening inclined parts, which are adapted to the snap-fit ​​hole and the second sliding hole. When the inclined parts open outward, they can be snapped into the snap-fit ​​hole. When the drive rod slides upward, the inclined parts retract inward and slide along the inner wall of the drive rod to the top of the second sliding hole. A guide slider is installed in the middle of the Y-shaped component. A U-shaped push rod is provided at the lower part of the Y-shaped component. An insert rod is provided at the lower end of the U-shaped push rod. Both the guide slider and the U-shaped push rod protrude from the outside of the drive rod. The cannulation mechanism includes a cannulation assembly, an air injection assembly, and a suturing assembly.

[0006] Furthermore, the locking device assembly includes a gripping part and an inner sleeve. Two U-shaped pressing plates are symmetrically arranged on the outer side of the gripping part. The outer side of each U-shaped pressing plate is provided with snap-fit ​​ribs and anti-slip textures. A limiting step is radially provided on the inner wall of the gripping part. A guide rib adapted to a guide groove is provided in the middle of the gripping part. The cooperation between the guide rib and the guide groove prevents circumferential rotation of the drive rod. A hook is provided at the lower end of the gripping part. A guide plane is provided axially on the outer wall of the inner sleeve. The lower end of the guide plane is located above the lower end of the inner sleeve. The outer wall of the inner sleeve forms an arc-shaped step. Two guide planes are symmetrically arranged. A second guide rib protruding outwards is provided in the middle of the guide plane. The upper end of the second guide rib has a slope, and the upper part of the second guide rib has a groove that matches the first hook. The slope guides the first hook as it slides downwards into the groove. The lower end of the second guide rib is arrow-shaped. When the first hook engages with the groove, the top of the inner sleeve contacts the lower end face of the limiting step. The upper and middle parts of the inner sleeve are hollow areas, and the lower part of the inner sleeve is a solid area. The inner sleeve has two sliding holes, a third and a fourth, along its axial direction. The third sliding hole is connected to the hollow area of ​​the inner sleeve. The guide slider and the portion of the U-shaped push rod protruding outside the drive rod are slidably fitted within the third sliding hole. The fourth sliding hole is located in the solid structure of the inner sleeve. The depth and width of the fourth sliding hole are greater than those of the third sliding hole. The upper end of the fourth sliding hole is connected to the third sliding hole, allowing the lower end of the U-shaped push rod to extend from the third sliding hole into the fourth sliding hole. A trigger rib is provided at the lower part of the hollow area. A piercing head is fixedly connected to the lower end of the inner sleeve via a connecting post. Two guide grooves are provided on the periphery of the head. The guide grooves are vertically aligned with the sliding holes and have the same width and depth. The upper end face of the piercing head is provided with multiple protrusions extending toward the inner sleeve. A cutting part is provided on the outer side of the piercing head and is located between the guide grooves. The protective sleeve is fitted on the outer side of the inner sleeve. The inner wall of the protective sleeve is provided with four sliding bosses that slide with the guide plane. Every two sliding bosses form a group. Between the two sliding bosses in each group, a guide groove that matches the guide rib is provided. The guide groove extends along the axis of the protective sleeve.

[0007] Furthermore, the locking device assembly also includes a protective sleeve. The upper end of the inner wall of the protective sleeve is provided with a limiting step two that is adapted to the arc-shaped step. When the limiting step two contacts the arc-shaped step, the protective sleeve is prevented from descending. At this time, the lower end of the protective sleeve covers the upper end of the spike and the guide groove two from the outside. The upper outer side of the protective sleeve is provided with a locking protrusion one.

[0008] Furthermore, the sleeve assembly includes an assembly shell, an upper sleeve, and a lower sleeve. The assembly shell includes an upper shell and a bottom shell fixedly connected, which are fixedly connected by hooks. The upper shell has snap-fit ​​holes on both sides that mate with a U-shaped pressing plate. The U-shaped pressing plate has a certain deformation. When the U-shaped pressing plate is inserted into the snap-fit ​​hole, the snap-fit ​​ribs snap against the edge of the snap-fit ​​hole. The upper shell has a through hole at its center and an inner folded edge around the through hole. The snap-fit ​​protrusion engages with the inner folded edge. An annular pressure strip is provided on the inner top of the upper shell. The inner diameter of the annular pressure strip is the same as the inner diameter of the upper sleeve, and the annular pressure strip extends vertically downwards. Extending further, the lower end of the bottom shell is provided with a lower through hole, and a limiting retaining ring is provided on the periphery of the lower through hole. Two symmetrically arranged guide rails are provided on the inner wall of the bottom shell, and the guide rails extend vertically. A suture thread through hole is also provided at the lower end of the bottom shell. The inner diameter of the upper sleeve is larger than that of the lower sleeve. A transition tube is provided at the lower end of the upper sleeve to connect with the lower sleeve. The upper end of the transition tube is connected to the upper sleeve, and the lower end is connected to the lower sleeve. The upper sleeve, lower sleeve, and transition tube are integrally formed. The upper ends of the upper sleeve, transition tube, and lower sleeve are all located inside the assembly shell. A slide bar adapted to the guide rail is provided on the outer side of the upper sleeve.

[0009] Furthermore, an air-blocking assembly is provided inside the upper sleeve. The air-blocking assembly includes an air-blocking valve, a sealing valve, and a protector. The edge of the air-blocking valve is provided with a groove that matches the upper end of the upper sleeve. The edge of the sealing valve is provided with a pressing groove that matches the annular pressure strip. The inner wall of the sealing valve is provided with an annular groove. The outer side of the protector is provided with an annular boss that engages with the annular groove. The protector is fixedly installed inside the sealing valve through the mutual cooperation of the annular boss and the annular groove. The lower end of the protector is provided with multiple pressure plates that contact the inner surface of the sealing valve. Two receiving cavities are formed between the bottom shell and the upper sleeve. The outer wall of the upper sleeve is provided with an outer boss, an inner boss, and a bushing extending towards one side of the receiving cavity. The outer boss, inner boss, and bushing are in two sets and are arranged coaxially. The inner boss is located between the outer boss and the bushing.

[0010] Furthermore, a limiting ring adapted to the limiting stop ring is provided on the outer periphery of the lower sleeve. Two needle-point protrusions are formed on the inner wall of the lower sleeve along its axial direction, and a guide groove three is formed between the two needle-point protrusions. The guide rib two slides along the needle-point protrusions and falls into the guide groove three. A guide groove four is opened at the center of the needle-point protrusions. The guide groove four extends along the axial direction of the lower sleeve. The outermost side of the U-shaped push rod is adapted to the guide groove four. A receiving groove is provided on the lower inner wall of the lower sleeve. The receiving groove is located below the guide groove four. A suture thread through hole two is provided on one side of the receiving groove.

[0011] Furthermore, the gas injection assembly includes a gas injection pipe and a gas injection valve. One end of the gas injection pipe extends from the outside to the inside into the sleeve assembly and extends to the bottom of the gas-blocking valve. A sealing ring is provided between the gas injection pipe and the sleeve assembly. The gas injection valve is connected in series on the gas injection pipe.

[0012] Furthermore, the stitching assembly includes a stitching thread, a winding wheel, a torsion spring, and an anchor. The stitching thread is wound around the outside of the winding wheel. One end of the stitching thread is connected to the winding wheel, and the other end is connected to the anchor after passing through stitching thread through hole one and stitching thread through hole two. The winding wheel is rotatably disposed in the gap between the outer boss and the inner boss. A limiting pin is provided on the outside of the winding wheel to contact the inner wall of the bottom shell. A rotating shaft is provided on the inside of the winding wheel to be rotatably connected to the bushing. The torsion spring is located in the gap between the inner boss and the bushing. One end of the torsion spring is hooked to the inner boss, and the other end is hooked to the winding wheel. The outside of the anchor is located in the receiving groove, and the inside of the anchor is located in the guide groove four. The upper end of the anchor is provided with a blind hole adapted to the insertion rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The puncture cannula device disclosed in this utility model has a puncture mechanism and a cannula mechanism that work together to achieve both abdominal cannulation and suturing functions in one instrument. It has a reasonable structural design, strong practicality, and is conducive to market promotion.

[0014] 2. The puncture cannula device disclosed in this utility model allows the puncture mechanism to adjust its posture during insertion of the cannula, ensuring accurate puncture positioning and facilitating postoperative wound healing.

[0015] 3. The puncture cannula device disclosed in this utility model provides external protection for the air-blocking valve and sealing valve by adding a protective sleeve, preventing puncture protrusion and scratching of the puncture head, and ensuring the airtightness of the wound. Attached Figure Description

[0016] Figure 1 This is a perspective view of the puncture cannula device in the embodiment; Figure 2 This is a perspective view of the puncture mechanism in the embodiment; Figure 3 The exploded view shows the handle cover, handle, and drive rod in the embodiment. Figure 4 This is an exploded view of the tension spring, Y-shaped component, and U-shaped push rod in the embodiment; Figure 5 This is an exploded view of the locking device assembly in the embodiment; Figure 6 For the example Figure 5 A sectional view; Figure 7This is a perspective view of the sleeve mechanism in the embodiment; Figure 8 This is an exploded view of the sleeve mechanism in the embodiment; the gas injection components are not shown. Figure 9 for Figure 8 A sectional view; Figure 10 This is a diagram showing the usage status of the puncture cannula device in the embodiment.

[0017] Explanation of key component symbols: 1000-Piercing mechanism, 1101-Handle cover, 1102-Handle, 1103-Drive rod, 1104-Tension spring, 1105-Y-shaped part, 1106-Hanging post, 1107-Guide slide groove one, 1108-Snap-fit ​​hole, 1109-Slide hole one, 1110-Slide hole two, 1111-Hanging hole, 1112-Inclined part, 1113-Guide slider, 1114-U-shaped push rod, 1115-Insertion rod, 1201-Grip part, 1202-Inner sleeve, 1203-Protective sleeve, 1204-U-shaped pressing plate, 1205-Snap-fit ​​rib 1206-Anti-slip texture, 1207-Limiting step one, 1208-Guide rib one, 1209-Hook one, 1210-Guide plane, 1211-Arched step, 1212-Guide rib two, 1213-Slot one, 1214-Sliding hole three, 1215-Sliding hole four, 1216-Trigger rib, 1217-Connecting post, 1218-Piercing head, 1219-Guide slide groove two, 1220-Piercing protrusion, 1221-Cutting part, 1222-Sliding boss, 1223-Guide groove, 1224-Limiting step two, 1225-Hook one.

[0018] 2000 - Sleeve Mechanism, 2101 - Upper Sleeve, 2102 - Lower Sleeve, 2103 - Upper Shell, 2104 - Bottom Shell, 2105 - Snap-fit ​​Hole, 2106 - Inner Folded Edge, 2107 - Annular Pressure Strip, 2108 - Limiting Ring, 2109 - Guide Rail 1, 2110 - Suture Through Hole 1, 2111 - Slide Bar 1, 2112 - Air Locking Valve, 2113 - Sealing Valve, 2114 - Protector, 2115 - Snap-fit ​​Slot, 2116 - Pressing Groove, 2117 - Annular Groove, 2118 - Annular Boss 2119-Pressure plate, 2120-Outer boss, 2121-Inner boss, 2122-Sleeve, 2123-Limiting ring, 2124-Needle-tip boss, 2125-Guide groove three, 2126-Guide groove four, 2127-Receiving groove, 2128-Suture thread through hole two, 2201-Air injection pipe, 2202-Air injection valve, 2301-Suture thread, 2302-Wrapping wheel, 2303-Torsion spring, 2304-Anchor pin, 2305-Limiting pin, 2306-Rotating shaft, 2307-Blind hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 This utility model provides a puncture cannula device, including a puncture mechanism 1000 and a cannula mechanism 2000.

[0021] Please see Figure 2-6 The puncture mechanism 1000 includes a handle assembly and a locking assembly, specifically: Please see Figure 3-4 The handle assembly includes a handle cover 1101, a handle 1102, a drive rod 1103, a tension spring 1104, and a Y-shaped component 1105. The handle cover 1101 is embedded in the top of the handle 1102. A hanging post 1106 is provided at the lower end of the handle cover 1101. The handle 1102 is fixedly connected to the drive rod 1103. In this embodiment, it is preferably integrally formed. The upper end of the drive rod 1103 is connected to the handle cover 1101 by a hook. The upper end of the drive rod 1103 contacts the lower end face of the hanging post 1106. Four axially extending guide grooves 1107 are provided on the outer side of the drive rod 1103. Two snap-fit ​​holes 1108 are symmetrically provided on the upper part of the drive rod 1103. A sliding hole 1109 is provided in the middle of the drive rod 1103. A sliding hole 2110 is provided on the lower part of the drive rod 1103. The width of the sliding hole 1109 is small. The Y-shaped component 1105 is provided with a hanging hole 1111 on the width of the sliding hole 1110. The upper end of the tension spring 1104 is connected to the hanging post 1106, and the lower end is connected to the hanging hole 1111. The upper end of the Y-shaped component 1105 is provided with two outwardly opening inclined portions 1112. The inclined portions 1112 are adapted to the snap-fit ​​hole 1108 and the sliding hole 1110. When the inclined portions 1112 open outward, they can be snapped into the snap-fit ​​hole 1108. When the moving rod 1103 slides upward, the inclined part 1112 retracts inward and slides along the inner wall of the driving rod 1103 to the top of the sliding hole 1110. A guide slider 1113 is installed in the middle of the Y-shaped part 1105. A U-shaped push rod 1114 is provided at the lower part of the Y-shaped part 1105. An insert rod 1115 is provided at the lower end of the U-shaped push rod 1114. Both the guide slider 1113 and the U-shaped push rod 1114 protrude outward from the outside of the driving rod 1103.

[0022] The locking device assembly includes a gripping part 1201, an inner sleeve 1202, and a protective sleeve 1203. Two U-shaped pressing plates 1204 are symmetrically arranged on the outer side of the gripping part 1201. The outer side of each U-shaped pressing plate 1204 is provided with snap-fit ​​ribs 1205 and anti-slip textures 1206. A limiting step 1207 is radially arranged on the inner wall of the gripping part 1201. A guide rib 1208, adapted to a guide groove 1107, is provided in the middle of the gripping part 1201. The interaction between guide groove 1107 and gripping part 1208 prevents circumferential rotation of drive rod 1103. A hook 1209 is provided at the lower end of gripping part 1201. A guide plane 1210 is provided on the outer wall of inner sleeve 1202 along the axial direction. The lower end of the guide plane 1210 is located above the lower end of inner sleeve 1202. Arc-shaped steps 1211 are formed sequentially on the outer wall of inner sleeve 1202. Two guide planes 1210 are symmetrically arranged. The middle part of the guide plane 1210... A second guide rib 1212 protrudes outwards. The upper end of the second guide rib 1212 has a slope. The upper part of the second guide rib 1212 has a groove 1213 that matches the first hook 1209. The slope provides guidance for the first hook 1209 to slide downward into the groove 1213. The lower end of the second guide rib 1212 is arrow-shaped. When the first hook 1209 and the groove 1213 are engaged, the top of the inner sleeve 1202 and the lower part of the limiting step 1207... The end faces are in contact, fixing the gripping part 1201 to the inner sleeve 1202. Since the hook 1209 and the slot 1213 are in planar contact, they provide limiting for the inner sleeve 1202 in both radial and axial directions, thus preventing the inner sleeve 1202 from shifting or rotating. The upper and middle parts of the inner sleeve 1202 are hollow areas, while the lower part is a solid area. The inner sleeve 1202 is provided with sliding holes 1214 and 1215 (e.g., ...) in the axial direction. Figure 2 As shown), the sliding hole three 1214 is connected to the hollow area of ​​the inner sleeve 1202. The guide slider 1113 and the U-shaped push rod 1114 protruding from the outside of the drive rod 1103 are slidably engaged in the sliding hole three 1214. The sliding hole four 1215 is located in the solid structure position of the inner sleeve 1202. The depth and width of the sliding hole four 1215 are both greater than those of the sliding hole three 1214. The upper end of the sliding hole four 1215 is connected to the sliding hole three 1214, so that the lower end of the U-shaped push rod 1114 extends from the sliding hole three 1214 into the sliding hole four 1215. A trigger rib 1216 is provided at the lower part of the hollow area. The lower end of the inner sleeve 1202 is fixedly connected to the piercing head 1218 through the connecting post 1217. Two guide grooves two 1219 are provided on the periphery of the piercing head 1218 (e.g., Figure 2As shown in the figure, the guide groove 1219 and the sliding hole 1215 are vertically aligned, with the same width and depth. The upper end face of the piercing head 1218 is provided with multiple protrusions 1220 extending towards the inner sleeve 1202. A cutting section 1221 is provided on the outer side of the piercing head 1218, located between the guide grooves 1219. The arrangement direction of the multiple protrusions 1220 and the cutting section 1221 is on the same axial plane. The protective sleeve 1203 is fitted onto the outer side of the inner sleeve 1202. The inner wall of the protective sleeve 1203 is provided with four sliding bosses 1222 that slide in cooperation with the guide plane 1210. Each pair of... The sliding bosses 1222 are in a group. Between the two sliding bosses 1222 in each group, a guide groove 1223 adapted to the guide rib 1212 is provided. The guide groove 1223 extends along the axis of the protective sleeve 1203. The upper end of the inner wall of the protective sleeve 1203 is provided with a limiting step 1224 adapted to the arc step 1211. When the limiting step 1224 contacts the arc step 1211, the protective sleeve 1203 is prevented from descending. At this time, the lower end of the protective sleeve 1203 covers the upper end of the spike 1220 and the guide groove 1219 from the outside. The upper outer side of the protective sleeve 1203 is provided with a locking protrusion 1225.

[0023] Please see Figure 7-9 The cannulation mechanism includes a cannulation assembly, an air injection assembly, and a suture assembly, specifically: The sleeve assembly includes an assembly shell, an upper sleeve 2101, and a lower sleeve 2102. The assembly shell includes an upper shell 2103 and a bottom shell 2104 that are fixedly connected. The upper shell 2103 and the bottom shell 2104 are fixedly connected by hooks. The upper shell 2103 has snap-fit ​​holes 2105 on both sides that are adapted to the U-shaped pressing plate 1204. The U-shaped pressing plate 1204 has a certain deformation. When the U-shaped pressing plate 1204 is inserted into the snap-fit ​​hole 2105, the snap-fit ​​rib 1205 snaps into the edge of the snap-fit ​​hole 2105, thereby installing the piercing mechanism 1000 on the assembly shell. When the piercing mechanism 1000 needs to be removed, the U-shaped pressing plate 1204 is pressed from the outside in, and the snap-fit ​​rib 1205 separates from the edge of the snap-fit ​​hole 2105, so that the piercing mechanism 1000 can be removed. The upper shell 2103 has a central through hole, and an inner folded edge 2106 is provided around the through hole. The snap protrusion 1225 engages with the inner folded edge. An annular pressure strip 2107 is provided on the inner top of the upper shell 2103. The inner diameter of the annular pressure strip 2107 is the same as the inner diameter of the upper sleeve 2101. The annular pressure strip 2107 extends downward in the vertical direction. The lower end of the bottom shell 2104 has a lower through hole, and a limiting ring 2108 is provided around the lower through hole. Two symmetrically arranged guide rails 2109 are provided on the inner wall of the bottom shell 2104. The guide rails 2109 extend vertically. A suture thread through hole 2110 is also provided at the lower end of the bottom shell 2104.The inner diameter of the upper sleeve 2101 is larger than the inner diameter of the lower sleeve 2102. A transition tube is provided at the lower end of the upper sleeve 2101 to connect with the lower sleeve 2102. The upper end of the transition tube is connected to the upper sleeve 2101, and the lower end is connected to the lower sleeve 2102. In this embodiment, the upper sleeve 2101, lower sleeve 2102, and transition tube are integrally formed. The upper ends of the upper sleeve 2101, transition tube, and lower sleeve 2102 are all located within the assembly housing. A slide bar 2111 adapted to the guide rail 2109 is provided on the outer side of the upper sleeve 2101. An air-blocking assembly is provided inside the upper sleeve 2101, including an air-blocking valve 2112 and a sealing valve 21. 13 and protector 2114, the edge of the air-blocking valve 2112 is provided with a groove 2115 that matches the upper end of the upper sleeve 2101, the edge of the sealing valve 2113 is provided with a pressing groove 2116 that matches the annular pressure strip 2107, the inner wall of the sealing valve 2113 is provided with an annular groove 2117, the outer side of the protector 2114 is provided with an annular boss 2118 that engages with the annular groove 2117, the protector 2114 is fixedly installed in the sealing valve 2113 through the mutual cooperation of the annular boss 2118 and the annular groove 2117, the lower end of the protector 2114 is provided with multiple pressure plates 2119 that contact the inner surface of the sealing valve 2113, the bottom shell 2104 and the upper Two receiving cavities are formed between the sleeves 2101. The outer wall of the upper sleeve 2101 is provided with an outer boss 2120, an inner boss 2121, and a bushing 2122 extending towards one side of the receiving cavity. The outer boss 2120, inner boss 2121, and bushing 2122 are in two sets and are arranged coaxially. The inner boss 2121 is located between the outer boss 2120 and the bushing 2122. The outer periphery of the lower sleeve 2102 is provided with a limiting ring 2123 adapted to the limiting ring 2108. The inner wall of the lower sleeve 2102 is formed with two needle-shaped bosses 2124 along its axial direction, and a guide is formed between the two needle-shaped bosses 2124. The guide rib 2122 slides along the needle-tip protrusion 2124 and falls into the guide groove 2125, thereby realizing the self-adjustment of the insertion posture of the inner sleeve 1202 and the lower sleeve 2102. The center of the needle-tip protrusion 2124 is provided with a guide groove 4 2126, which extends along the axial direction of the lower sleeve 2102. The outermost side of the U-shaped push rod 1114 is adapted to the guide groove 4 2126. The lower end of the lower sleeve 2102 is provided with a receiving groove 2127, which is located below the guide groove 4 2126. A suture thread through hole 2128 is provided on one side of the receiving groove 2102.After the upper shell 2103 and the lower shell 2104 are snapped together, the air-blocking valve 2112, the sealing valve 2113, the upper sleeve 2101, and the lower sleeve 2102 are clamped between the annular pressure strip 2107 and the limiting ring 2108. The annular pressure strip 2107 and the limiting ring 2108 achieve axial limiting of the upper sleeve 2101 and the lower sleeve 2102, while the sliding strip 2111, which is compatible with the guide rail 2109, cooperates to achieve radial limiting of the upper sleeve 2101 and the lower sleeve 2102.

[0024] The lower sleeve 2102 has multiple annular protrusions formed on its outer wall. When the lower sleeve is inserted into the wound, the abdominal tissue can sink into the depression formed between the annular protrusions, preventing abdominal air leakage from the outside.

[0025] The gas injection assembly includes a gas injection pipe 2201 and a gas injection valve 2202. One end of the gas injection pipe 2201 extends from the outside to the inside of the sleeve assembly and extends to the bottom of the gas-blocking valve 2112. A sealing ring is provided between the gas injection pipe 2201 and the sleeve assembly. The gas injection valve 2202 is connected in series with the gas injection pipe 2201. The suture assembly includes a suture 2301, a winding wheel 2302, a torsion spring 2303, and an anchor 2304. The suture 2301 is wound around the outside of the winding wheel 2302. One end of the suture 2301 is connected to the winding wheel 2302, and the other end passes through suture thread through hole one 2110 and suture thread through hole two 2128 in sequence before being connected to the anchor 2304. The winding wheel 2302 is rotatably disposed in the gap between the outer boss 2120 and the inner boss 2121. The outer side of the winding wheel 2302 is in contact with the inner wall of the bottom shell 2104. The limiting pin 2305, the inner side of the winding wheel 2302 is provided with a rotating shaft 2306 that is rotatably connected to the bushing 2122, the torsion spring 2303 is located in the gap between the inner boss 2121 and the bushing 2122, one end of the torsion spring 2303 is hooked to the inner boss 2121 and the other end is hooked to the winding wheel 2302, the outer side of the anchor 2304 is located in the receiving groove 2127, the inner side of the anchor 2304 is located in the guide slide groove 2126, and the upper end of the anchor 2304 is provided with a blind hole 2307 that is adapted to the insertion rod 1115.

[0026] Please see Figure 10 The puncture cannula device disclosed in this embodiment is used as follows: 1. Please refer to Figure 10a. Insert the cannula mechanism 2000 into the abdominal tissue opening. In this state, the anchor 2304 is located in the receiving groove 2127 on the inner wall of the lower cannula 2102. The lower end of the suture 2301 passes through the second hole 2128 from the suture and is tied to the anchor 2304. At this time, the torsion spring 2303 is in a torsional deformation state. The suture 2301 wound on the winding wheel 2302 provides a tension force to the anchor 2304 from the outside, making the anchor 2304 tightly adhere to the receiving groove 2127 and preventing it from falling off. Open the air injection valve 2202 to deliver external gas into the abdominal cavity. The endoscope and surgical instruments can be inserted into the abdominal cavity through the cannula mechanism 2000 for observation of the surgical field and interventional treatment of the diseased area.

[0027] 2. Please refer to Figure 10 b. Insert the puncture mechanism 1000 into the cannula mechanism 2000. During insertion, the guide rib 1212 on the outer wall of the inner sleeve 1202 adaptively slides down into the guide groove 2125 along the pointed outer contour of the needle-shaped protrusion 2124. The snap-fit ​​ribs 1205 on the two U-shaped pressing plates 1204 snap-fit ​​with the edge of the snap-fit ​​hole 2105. A clicking sound will be made during this process, indicating that the two parts are snapped into place, so that the puncture mechanism 1000 and the cannula mechanism 2000 are assembled into a whole (combination kit). The cutting part 1221 of the puncture head 1218 pierces the fascia layer, and the puncture protrusion 1220 is located below the fascia layer. It should be noted that after the puncture mechanism 1000 and the cannula mechanism 2000 are assembled, the insertion rod 1115 at the lower end of the U-shaped push rod 1114 is inserted into the blind hole 2307 at the upper end of the anchor 2304, and the locking protrusion 1225 on the outer side of the upper end of the protective sleeve 1203 engages with the inner folded edge 2106 of the upper shell 2103. It should also be noted that the combined kit can be used to directly puncture the abdominal cavity from outside the body, with the cutting part 1221 replacing the function of a scalpel.

[0028] 3. Please refer to Figure 10 c. Lift the entire assembly upwards, and the spike 1220 inserts into the fascia layer from bottom to top to position the fascia layer and tissue on both sides of the incision. Pull the handle 1102 upwards, and the drive rod 1103 moves upwards, stretching the tension spring 1104. Because the guide slider 1113 is limited by the upper end of the sliding hole three 1214, the Y-shaped part 1105, the guide slider 1113, and the U-shaped push rod 1114 are all relatively stationary with respect to the lower sleeve 1202. The inclined part 1112 retracts inwards and separates from the locking hole 1108. As the drive rod 1103 continues to move upwards, when the sliding hole two 1110 moves to both sides of the inclined part 1112, the inclined part 1112 opens outwards and locks into the sliding hole two 1110. 4. Please refer to Figure 10d. Press down on handle 1102, drive rod 1103 pushes Y-shaped part 1105, guide slider 1113, U-shaped push rod 1114, U-shaped push rod 1114 pushes anchor 2304 and suture 2301 downward through fascia tissue.

[0029] 5. Please refer to Figure 10 e. Press the handle 1102 downwards continuously. The inclined portion 1112 of the Y-shaped part 1105 contacts the trigger rib 1216 of the inner sleeve 1202. The trigger rib 1216 presses the inclined portion 1112 inwards, causing the inclined portion 1112 to separate from the sliding hole 1110. The tension spring 1104 returns to its original deformation, instantly pulling the Y-shaped part 1105, the guide slider 1113, and the U-shaped push rod 1114 back to their initial positions. The initial position means that the inclined portion 1112 is engaged in the engagement hole 1108, and the guide slider 1113 is located at the upper end of the sliding hole 1214. Figure 2 (As shown).

[0030] 6. Please refer to Figure 10 f. Press the two U-shaped pressing plates 1204 from the outside to remove the snap-fit ​​ribs 1205 from the snap-fit ​​holes 2105 and remove the puncture mechanism 1000 from the cannula mechanism 2000. During this process, the inner sleeve 1202 moves upward, while the protective sleeve 1203 remains engaged with the sleeve mechanism 2000. That is, the inner sleeve 1202 and the protective sleeve 1203 move relative to each other. When the protrusion 1220 moves upward to below the air-blocking valve 2112, the arc-shaped step 1211 of the inner sleeve 1202 contacts the limiting step 1224 on the inner wall of the protective sleeve 1203. The lower end of the protective sleeve 1203 covers the upper end of the protrusion 1220 and the guide groove 1219 from the outside, thereby preventing the protrusion 1220 and the guide groove 1219 from scratching the air-blocking valve 2112 and the sealing valve 2113 during the removal process. Finally, the protective sleeve 1203 and the inner sleeve 1202 are removed together from the sleeve mechanism 2000, as shown in Figure 11g.

[0031] 7. Please refer to Figure 10 h, lift the sleeve mechanism 2000 upwards, the suture 2301 is stretched and tightened, and the suture is knotted from outside the body to complete the suturing of the fascia opening. It should be noted that both the anchor 2304 and the suture 2301 are made of human absorbable materials.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A puncture cannula device, comprising a puncture mechanism and a cannula mechanism, characterized in that: The puncture mechanism includes a handle assembly and a locking assembly. The handle assembly includes a handle cover, a handle, a drive rod, a tension spring, and a Y-shaped component. A hanging post is provided at the lower end of the handle cover. The handle is fixedly connected to the drive rod, and the upper end of the drive rod is connected to the handle cover via a hook. The upper end of the drive rod contacts the lower end face of the hanging post. Several axially extending guide grooves are provided on the outer side of the drive rod. Two symmetrically arranged locking holes are provided on the upper part of the drive rod. A sliding hole is provided in the middle of the drive rod, and a sliding hole is provided in the lower part of the drive rod. The width of the first sliding hole is smaller. The Y-shaped component has a hanging hole on its width relative to the second sliding hole. The upper end of the tension spring is connected to the hanging post, and the lower end is connected to the hanging hole. The upper end of the Y-shaped component has two outwardly opening inclined parts, which are adapted to the snap-fit ​​hole and the second sliding hole. When the inclined parts open outward, they can be snapped into the snap-fit ​​hole. When the drive rod slides upward, the inclined parts retract inward and slide along the inner wall of the drive rod to the top of the second sliding hole. A guide slider is installed in the middle of the Y-shaped component. A U-shaped push rod is provided at the lower part of the Y-shaped component. An insert rod is provided at the lower end of the U-shaped push rod. Both the guide slider and the U-shaped push rod protrude from the outside of the drive rod. The cannulation mechanism includes a cannulation assembly, an air injection assembly, and a suturing assembly.

2. The puncture cannula device according to claim 1, characterized in that: The locking device assembly includes a gripping part and an inner sleeve. Two U-shaped pressing plates are symmetrically arranged on the outer side of the gripping part. The outer side of each U-shaped pressing plate is provided with snap-fit ​​ribs and anti-slip textures. A limiting step is radially provided on the inner wall of the gripping part. A guide rib adapted to a guide groove is provided in the middle of the gripping part. The cooperation between the guide rib and the guide groove prevents circumferential rotation of the drive rod. A hook is provided at the lower end of the gripping part. A guide plane is provided axially on the outer wall of the inner sleeve. The lower end of the guide plane is located above the lower end of the inner sleeve. Sequentially, shapes are formed on the outer wall of the inner sleeve. The guide plane is formed by two symmetrically arranged arc-shaped steps. A second guide rib protruding outwards is provided in the middle of the guide plane. The upper end of the second guide rib has a slope, and the upper part of the second guide rib has a groove that matches the first hook. The slope guides the first hook as it slides downwards into the groove. The lower end of the second guide rib is arrow-shaped. When the first hook engages with the groove, the top of the inner sleeve contacts the lower end face of the limiting step. The upper and middle parts of the inner sleeve are hollow areas, and the lower part of the inner sleeve is a solid area. The inner sleeve is axially... Sliding holes three and four are provided in the direction of the inner sleeve. Sliding hole three is connected to the hollow area of ​​the inner sleeve. The guide slider and the part of the U-shaped push rod protruding outside the drive rod are slidably engaged in sliding hole three. Sliding hole four is located in the solid structure position of the inner sleeve. The depth and width of sliding hole four are greater than those of sliding hole three. The upper end of sliding hole four is connected to sliding hole three, so that the lower end of the U-shaped push rod extends from sliding hole three into sliding hole four. A trigger rib is provided at the lower part of the hollow area. A piercing head is fixedly connected to the lower end of the inner sleeve through a connecting post. Two guide sliders are provided on the periphery of the piercing head. The guide groove two corresponds to the sliding hole four in terms of vertical position, width, and depth. The upper end face of the piercing head is provided with multiple piercing protrusions extending towards the inner sleeve. The outer side of the piercing head is provided with a cutting part, which is located between the guide groove two. The locking device assembly also includes a protective sleeve, which is sleeved on the outer side of the inner sleeve. The inner wall of the protective sleeve is provided with four sliding bosses that slide in cooperation with the guide plane. Every two sliding bosses form a group. Between the two sliding bosses in each group, a guide groove adapted to the guide rib two is provided. The guide groove extends along the axis of the protective sleeve.

3. The puncture cannula device according to claim 2, characterized in that: The upper end of the inner wall of the protective sleeve is provided with a limiting step two that is adapted to the arc-shaped step. When the limiting step two comes into contact with the arc-shaped step, the protective sleeve is prevented from going down. At this time, the lower end of the protective sleeve covers the upper end of the spike and the guide groove two from the outside. The upper outer side of the protective sleeve is provided with a locking protrusion one.

4. The puncture cannula device according to claim 3, characterized in that: The sleeve assembly includes an assembly shell, an upper sleeve, and a lower sleeve. The assembly shell includes an upper shell and a bottom shell fixedly connected, which are fixedly connected by hooks. The upper shell has snap-fit ​​holes on both sides that mate with U-shaped pressing plates. The U-shaped pressing plates have a certain deformation; when the U-shaped pressing plates are inserted into the snap-fit ​​holes, the snap-fit ​​ribs engage with the edges of the snap-fit ​​holes. The upper shell has a central through-hole, and an inner folded edge is provided around the through-hole. A snap-fit ​​protrusion engages with the inner folded edge. An annular pressure strip is provided on the inner top of the upper shell, with the inner diameter of the annular pressure strip being the same as the inner diameter of the upper sleeve. The annular pressure strip extends downwards vertically. The bottom shell has a lower through hole at its lower end, and a limiting ring is provided around the lower through hole. Two symmetrically arranged guide rails are provided on the inner wall of the bottom shell, and the guide rails extend vertically. A suture thread through hole is also provided at the lower end of the bottom shell. The inner diameter of the upper sleeve is larger than that of the lower sleeve. A transition tube is provided at the lower end of the upper sleeve to connect with the lower sleeve. The upper end of the transition tube is connected to the upper sleeve, and the lower end is connected to the lower sleeve. The upper sleeve, lower sleeve, and transition tube are integrally formed. The upper ends of the upper sleeve, transition tube, and lower sleeve are all located inside the assembly shell. A slide bar adapted to the guide rail is provided on the outer side of the upper sleeve.

5. The puncture cannula device according to claim 4, characterized in that: An air-blocking assembly is installed inside the upper sleeve. The air-blocking assembly includes an air-blocking valve, a sealing valve, and a protector. The edge of the air-blocking valve has a groove that matches the upper end of the upper sleeve. The edge of the sealing valve has a pressing groove that matches the annular pressure strip. The inner wall of the sealing valve has an annular groove. The outer side of the protector has an annular boss that engages with the annular groove. The protector is fixedly installed inside the sealing valve through the mutual cooperation of the annular boss and the annular groove. The lower end of the protector has multiple pressure plates that contact the inner surface of the sealing valve. Two receiving cavities are formed between the bottom shell and the upper sleeve. The outer wall of the upper sleeve has an outer boss, an inner boss, and a bushing extending towards one side of the receiving cavity. The outer boss, inner boss, and bushing are in two sets and are arranged coaxially. The inner boss is located between the outer boss and the bushing.

6. The puncture cannula device according to claim 5, characterized in that: The lower sleeve has a limiting ring on its outer periphery that matches the limiting ring. The inner wall of the lower sleeve has two needle-shaped protrusions formed along its axial direction. A guide groove three is formed between the two needle-shaped protrusions. The guide rib two slides along the needle-shaped protrusions and falls into the guide groove three. A guide groove four is opened at the center of the needle-shaped protrusions. The guide groove four extends along the axial direction of the lower sleeve. The outermost side of the U-shaped push rod matches the guide groove four. The lower end of the inner wall of the lower sleeve has a receiving groove. The receiving groove is located below the guide groove four. A suture thread through hole two is provided on one side of the receiving groove.

7. The puncture cannula device according to claim 6, characterized in that: The gas injection assembly includes a gas injection pipe and a gas injection valve. One end of the gas injection pipe extends from the outside to the inside of the sleeve assembly and extends to the bottom of the gas-blocking valve. A sealing ring is provided between the gas injection pipe and the sleeve assembly. The gas injection valve is connected in series on the gas injection pipe.

8. The puncture cannula device according to claim 7, characterized in that: The suture assembly includes a suture thread, a winding wheel, a torsion spring, and an anchor. The suture thread is wound around the outside of the winding wheel. One end of the suture thread is connected to the winding wheel, and the other end is connected to the anchor after passing through suture thread through hole one and suture thread through hole two. The winding wheel is rotatably disposed in the gap between the outer boss and the inner boss. A limiting pin is provided on the outside of the winding wheel to contact the inner wall of the bottom shell. A rotating shaft is provided on the inside of the winding wheel to be rotatably connected to the bushing. The torsion spring is located in the gap between the inner boss and the bushing. One end of the torsion spring is hooked to the inner boss, and the other end is hooked to the winding wheel. The outside of the anchor is located in the receiving groove, and the inside of the anchor is located in the guide groove four. The upper end of the anchor is provided with a blind hole adapted to the insertion rod.

9. The puncture cannula device according to claim 8, characterized in that: Both the anchors and sutures are made of absorbable materials.

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