Removable punch card penetrator and medical device

Abstract

The utility model relates to surgical instruments technical field, is a kind of detachable poking card puncture device and medical equipment, the former includes poking card head, poking card core and left half sleeve and right half sleeve opposite to opening, left half sleeve and right half sleeve are assembled together to form sleeve tube. The utility model is reasonable and compact, after doing thoracic or abdominal cavity operation, sleeve tube is still left in patient's body, at this time, after taking down the anti-loose end cover, medical staff can still help the operation passage in sleeve tube, and drainage tube is quickly inserted into patient's body, effectively improve the intubation speed and accuracy of drainage tube, shorten the operation time;After completing intubation, pull out sleeve tube, separate poking card head and sleeve tube, it can be taken off from drainage tube to avoid the influence of the device on the use of drainage tube. Under the condition of not needing drainage operation, through positioning device, medical staff can control the insertion depth of sleeve tube, reduce the operation difficulty of poking card puncture device, which is beneficial to save operation time.

Description

Technical Field

[0001] This utility model relates to the field of surgical instruments technology, and is a detachable puncture card and medical device. Background Technology

[0002] Minimally invasive surgery refers to surgeries performed using modern medical instruments and equipment such as laparoscopes and thoracoscopes. It offers advantages such as less trauma, less pain, and faster recovery. The laparoscopic procedure involves making multiple 5-12 mm incisions (surgical trocars, subcutaneous tunnels) in the abdominal / chest wall. Rigid tubes (trocars) are placed through these incisions, with one end inserted into the skin and the other end exposed on the skin surface. Surgical instruments (such as surgical forceps, electrocautery hooks, and ultrasonic scalpels) and the endoscope lens enter and exit the abdominal / thoracic cavity through the surgical channels within the trocars to perform various procedures.

[0003] Most existing trocars consist of a trocar core and an outer tube. Some patients require thoracic / abdominal drainage after thoracoscopic / laparoscopic surgery. While the drainage tube can pass through the outer tube into the body, the outer tube cannot detach from the drainage tube. Therefore, the current surgical method involves first removing the outer tube and then inserting the drainage tube back into the body through the original surgical trocar opening. However, after removing the outer tube, the surgical trocar opening contracts, making it difficult to reinsert the drainage tube. Even if it can be reinserted, it may cause secondary injury. Furthermore, in stoma surgery, the fistula usually needs to be implanted at the stoma point using the surgical channel within the trocar. The external end of the fistula is connected to a fistula bag, but most existing trocars are integral and cannot be removed from the fistula; they can only be suspended on the fistula, making them extremely inconvenient to use.

[0004] Chinese patent document CN210383950U discloses a laparoscopic observation puncture card with self-cleaning and anti-fogging function. It includes a laparoscopic observation puncture card head, an auxiliary puncture head mechanism, and a puncture card cavity mechanism. The laparoscopic observation puncture card head has the puncture card cavity mechanism, and a secondary anti-loosening end cap is provided above the puncture card cavity mechanism. The auxiliary puncture head mechanism is located above the secondary anti-loosening end cap and is installed inside the puncture card cavity mechanism through the secondary anti-loosening end cap. Although its design is reasonable, its structure is simple, and its cost is low, allowing for cleaning of the laparoscope lens without removing the laparoscope, its puncture card cavity mechanism is a complete, non-disassembled unit and cannot be removed from the drainage tube or fistula.

[0005] Chinese patent document CN209032617U discloses a thoracoscopic puncture clamp, including an outer tube and a guide rod that mates with the outer tube. The outer tube consists of two symmetrical half-tubes, designated as a first half-tube and a second half-tube. One side of the first half-tube is movably connected to one side of the second half-tube. A protrusion is provided on the cross-section of the other side of the first half-tube, and a groove is provided on the cross-section of the other side of the second half-tube. The protrusion mates with the groove. Although the procedure allows for drainage of a tube after thoracoscopic surgery while the outer tube remains in the body, and the outer tube is then removed after the drainage tube is in place, separating the first and second half-tubes by opening one side, and thus separating the outer tube from the drainage tube, the puncture clamp relies solely on the protrusion and groove for fastening. Without other limiting structures, the fastening effect of the first and second half-tubes is not reliable, and there is a risk of breakage.

[0006] Chinese patent document CN210697766U discloses a sealable and fixable puncture card, comprising: a puncture card with graduated lines on a puncture tube, a sealing sleeve fixed to the puncture end of the puncture card, a fixator, and a suction cup connected thereto for adsorption onto the human body surface; the fixator includes a housing, a herringbone locking plate, and an unlocking button. The herringbone locking plate is connected to the housing and is divided into a fixing bracket and a spring-loaded latch. The unlocking button is installed on the housing. When the unlocking button is pressed, the spring-loaded latch of the herringbone locking plate is lifted away from the cylinder of the puncture tube. Although it has a positive effect on fixing the puncture card, preventing air leakage, preventing subcutaneous swelling, and protecting abdominal organs during laparoscopic surgery, its fixator structure is relatively complex.

[0007] Furthermore, the puncture core is inserted into the puncture cannula and simultaneously punctured at the surgical incision site in the abdominal / chest wall. Because the puncture core is held by hand and directly punctures the abdominal / chest wall, the depth and precision of insertion are extremely critical to avoid accidental damage to internal organs. This requires highly skilled medical personnel, making the procedure quite challenging. During insertion into the abdominal / chest wall or during the procedure, the puncture cannula is prone to sliding within the surgical incision site, significantly impacting the surgical procedure and delaying the operation. To prevent this sliding, existing puncture cannulas have a frosted surface or anti-slip texture to increase friction and improve stability within the abdominal / chest wall. However, the friction and pressure between the frosted surface or anti-slip texture and body tissue not only cause frictional damage and bleeding at the surgical incision site, causing unnecessary pain for the patient, but also cause further damage to the surgical incision when the puncture cannula is removed, hindering postoperative recovery. Summary of the Invention

[0008] This utility model provides a detachable puncture card device and medical equipment, which overcomes the shortcomings of the prior art. It can effectively solve the problems of existing puncture card devices, such as the integral puncture card sleeve being unable to be removed from the fistula or drainage tube, which is inconvenient to use, and the risk of the puncture card sleeve breaking during use due to its split design, and unstable performance.

[0009] One of the technical solutions of this utility model is achieved through the following measures: a detachable puncture card device, including a puncture card head, a puncture card core, and left and right half-cannulas with opposite openings. The left and right half-cannulas are assembled together to form an outer tube, and the cavity inside the outer tube forms a first surgical channel that runs vertically through the body. The puncture card head includes a left and right half-cannulas that are detachably installed together. The upper end of the left half-cannulas is fixedly installed with the middle of the lower end of the left half-cannulas, and the upper end of the right half-cannulas is fixedly installed with the middle of the lower end of the right half-cannulas. A second surgical channel that runs vertically through the body is provided on the puncture card head corresponding to the position of the first surgical channel. A downward-opening anti-loosening end cap is detachably installed on the upper end of the puncture card head, and a third surgical channel that runs vertically through the body is provided on the anti-loosening end cap corresponding to the position of the second surgical channel. A handle is detachably installed on the upper end of the anti-loosening end cap. The puncture card core passes through the first, second, and third surgical channels sequentially from bottom to top and is fixedly installed with the middle of the lower end of the handle.

[0010] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0011] The right side of the aforementioned left half sleeve may be provided with a right-opening slot, which is set along the length of the left half sleeve. The right half sleeve corresponding to the slot position may be provided with a locking platform that complements the shape of the slot, and the locking platform can be engaged with the slot.

[0012] The right side of the aforementioned left half of the card head may be provided with a limiting groove that opens to the right and extends vertically. The right half of the card head corresponding to the position of the limiting groove may be provided with a limiting boss that is complementary in shape to the limiting groove. The limiting boss can be engaged with the limiting groove.

[0013] A positioning device is slidably installed on the outer side of the aforementioned outer tube; the positioning device may include a positioning plate, a locking nut and a hollow stud. The positioning plate has an outer tube mounting hole that runs vertically through the center. The positioning plate is fitted inside the outer tube mounting hole. A stud with its lower end fixedly installed together with the positioning plate is fixedly installed on the upper center of the positioning plate. A locking nut is threadedly connected to the outside of the stud. An adjustment notch with an upward opening and running through the front and back is provided on the upper side of the stud. The lower end of the adjustment notch is located below the locking nut.

[0014] The left half of the card head can be provided with a first mounting port opening to the upper right front part and the upper right rear part, respectively. Corresponding to each first mounting port position, the right half of the card head can be provided with a second mounting port opening to the upper left. A locking tongue that is inserted into the first mounting port at the lower left can be fixedly installed in each second mounting port. The upper ends of the two locking tongues are located above the card head and are bent outward into barbs. A buckle plate and a stop baffle can be provided on the inner side of the lower front part and the inner side of the lower rear part of the anti-loosening end cap, respectively. The buckle plate and the stop baffle are staggered. After the lower end of the anti-loosening end cap is rotated and fastened together with the upper end of the card head, the barbs on each locking tongue can be hooked together with the corresponding buckle plate. The stop baffle can just press against the locking tongue to prevent the barbs and buckles from being misaligned and disengaged.

[0015] The aforementioned handheld part may include a U-shaped base, an inverted U-shaped elastic locking piece, and a downward-facing handheld cap. The upper side of the anti-loosening end cap has a U-shaped base, and the lower center of the U-shaped base has a downward-facing pinhole. The upper end of the embossed core is fixedly installed inside the pinhole. A positioning ring is fixedly installed on the outer side of the upper end of the U-shaped base, and the upper end of the positioning ring is fixedly installed together with the inner side of the middle of the upper end of the handheld cap. The lower end of the handheld cap abuts against the upper side of the lower end of the U-shaped base. The lower left and lower right parts of the lower end of the U-shaped base each have a first through hole extending vertically. The anti-loosening end cap corresponding to each first through hole has a second through hole extending both internally and externally. A fitting is fixedly installed on the outer side of the positioning ring. The inverted U-shaped elastic locking piece inside the handheld cap has its lower end passing through the corresponding first and second through holes from top to bottom and then bending outwards to form a hook. The hook can hook onto the inner wall of the top of the anti-slip cap. The left side of the handheld cap has a downward-facing, through-hole left pressing notch. Inside the left pressing notch is a left pressing block whose right end is fixedly installed with the corresponding position on the left side of the inverted U-shaped elastic locking piece. The right side of the handheld cap, corresponding to the position of the left pressing notch, has a downward-facing, through-hole right pressing notch. Inside the right pressing notch is a right pressing block whose left end is fixedly installed with the corresponding position on the right side of the inverted U-shaped elastic locking piece.

[0016] The upper middle part of the above-mentioned stamp head may be provided with a sealing ring groove with an upward opening, and a lower sealing cap with a downward opening may be provided in the sealing ring groove. The lower sealing cap may be provided with a first sealing hole that runs through the top and bottom in the middle. The lower sealing cap may include a left half sealing cap and a right half sealing cap with opposite openings.

[0017] The inner side of the inner wall of the top of the aforementioned anti-detachment end cap may be provided with a sealing ring platform that can be fitted onto the outer side of the stamping core. An upper sealing cap with an upward opening may be fitted onto the outer side of the sealing ring platform. A second sealing hole that runs vertically through the middle of the upper sealing cap is provided. The lower end of the upper sealing cap abuts against the upper side of the stamping head. A sealing pressure ring may be fixedly installed on the outer side of the middle of the upper sealing cap.

[0018] The left half clamp head corresponding to the upper left position of the left half sleeve can be provided with a left limiting hole with an opening to the right. A left limiting post with its right end fixedly installed together with the corresponding position on the left side of the left half sleeve can be fixedly installed in the left limiting hole. The right half clamp head corresponding to the upper position of the right half sleeve can be provided with a right limiting hole with an opening to the left. A right limiting post with its left end fixedly installed together with the corresponding position on the right side of the right half sleeve can be fixedly installed in the right limiting hole.

[0019] The second technical solution of this utility model is achieved through the following measures: a medical device, including the detachable puncture card as described above.

[0020] This utility model features a reasonable and compact structure, making it easy to use. After thoracic or abdominal surgery, with the outer tube still inside the patient, removing the locking cap allows medical staff to quickly insert the drainage tube or fistula into the patient's body via the surgical channel within the outer tube. This effectively improves the insertion speed and accuracy of the drainage tube or fistula, shortening the surgical time. After insertion, the outer tube is removed, and the puncture head and outer tube are separated, allowing it to be removed from the drainage tube or fistula to avoid interfering with its use. In cases where drainage surgery is not required, the positioning device allows medical staff to control the insertion depth of the outer tube, reducing the difficulty of the puncture procedure. After inserting the outer tube into the patient's cavity along the surgical puncture site, the lower end of the positioning plate presses against the patient's skin, better securing the puncture device and preventing the outer tube from sliding within the surgical puncture site, minimizing its impact on the surgical procedure and saving surgical time. The smooth surface of the outer tube prevents secondary damage to the surgical puncture site, promoting better postoperative recovery. Attached Figure Description

[0021] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments 1 to 9 of this utility model.

[0022] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the three-dimensional structure.

[0023] Appendix Figure 3 For the appendix Figure 1 A three-dimensional structural diagram of the left half of the card head.

[0024] Appendix Figure 4 For the appendix Figure 1 A three-dimensional structural diagram of the right half of the card head.

[0025] Appendix Figure 5 For the appendix Figure 1 3D structural diagram of the anti-loosening end cap Figure 1 .

[0026] Appendix Figure 6 For the appendix Figure 13D structural diagram of the anti-loosening end cap Figure 2 .

[0027] Appendix Figure 7 For the appendix Figure 1 A three-dimensional structural diagram of the handheld part and the stamp core.

[0028] Appendix Figure 8 For the appendix Figure 7 A schematic diagram of the exploded structure of the handheld part.

[0029] Appendix Figure 9 For the appendix Figure 1 Enlarged short-plane structural diagram of the left and right half-sleeves.

[0030] Appendix Figure 10 For the appendix Figure 1 A magnified cross-sectional view of section AA.

[0031] Appendix Figure 11 This diagram illustrates the application of this invention in drainage surgery.

[0032] Appendix Figure 12 This diagram illustrates the application of this invention in abdominal / thoracic surgery.

[0033] The codes in the attached diagram are as follows: 1 for the clasp core, 2 for the left half of the sleeve, 3 for the right half of the sleeve, 4 for the first surgical channel, 5 for the left half of the clasp head, 6 for the right half of the clasp head, 7 for the second surgical channel, 8 for the anti-loosening end cap, 9 for the third surgical channel, 10 for the clasp groove, 11 for the clasp platform, 12 for the limiting groove, 13 for the limiting boss, 14 for the positioning plate, 15 for the locking nut, 16 for the stud, 17 for the adjustment notch, 18 for the first mounting port, 19 for the locking tongue, 20 for the barb, 21 for the buckle plate, 22 for the stop baffle, 23 for the T-shaped base, 24 for the inverted U-shaped elastic locking piece, 25 for... Handheld cap, 26 is positioning ring, 27 is first through hole, 28 is second through hole, 29 is hook, 30 is left pressing block, 31 is right pressing notch, 32 is right pressing block, 33 is left half sealing cap, 34 is right half sealing cap, 35 is sealing ring platform, 36 is upper sealing cap, 37 is sealing pressure ring, 38 is left limiting post, 39 is right limiting hole, 40 is conical guide port, 41 is drainage tube, 42 is surgical forceps, 43 is 7-shaped locking hook, 44 is limiting plate, 45 is scale, 46 is first identification part, 47 is second identification part, and 48 is inverted conical guide port. Detailed Implementation

[0034] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0035] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0036] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0037] Example 1: As shown in the attached document Figure 1-12 As shown, the detachable puncture device includes a puncture head, a puncture core 1, and two opposing left and right half-cannulas 2 and 3. The left and right half-cannulas 2 and 3 are assembled together to form an outer tube, and the cavity inside the outer tube forms a first surgical channel 4 that runs vertically through the body. The puncture head includes a detachable left half-cannulas 5 and a right half-cannulas 6. The upper end of the left half-cannulas 2 is fixedly installed with the middle of the lower end of the left half-cannulas 5, and the upper end of the right half-cannulas 3 is fixedly installed with the middle of the lower end of the right half-cannulas 6. A second surgical channel 7 that runs vertically through the body is provided on the puncture head corresponding to the position of the first surgical channel 4. A downward-facing anti-loosening end cap 8 is detachably installed on the upper end of the puncture head, and a third surgical channel 9 that runs vertically through the body is provided on the anti-loosening end cap 8 corresponding to the position of the second surgical channel 7. A handle is detachably installed on the upper end of the anti-loosening end cap 8. The puncture core 1 passes through the first surgical channel 4, the second surgical channel 7, and the third surgical channel 9 from bottom to top and is then fixedly installed with the middle of the lower end of the handle.

[0038] In the above technical solution, the left half sleeve 2 and the right half sleeve 3 can be assembled through the following detachable installation structure: ① The rear side of the left half sleeve 2 and the rear side of the right half sleeve 3 can be movably connected by a flexible connecting strip to achieve a hinge-like effect. The left half sleeve 2, the right half sleeve 3 and the flexible connecting strip can be integrally injection molded. A groove with an opening to the right can be provided on the sleeve wall of the right front part of the left half sleeve 2 (facing the right half sleeve 3). A boss with a shape complementary to the groove can be provided on the sleeve wall of the left front part of the right half sleeve 3 (facing the left half sleeve 2). After folding the left half sleeve 2 and the right half sleeve 3 relative to each other and embedding the boss into the groove, the left half sleeve 2 and the right half sleeve 3 can be fastened together to form a complete outer sleeve. The shape of the boss can be cylindrical, rectangular or square strip boss. The boss and the groove are interference fit or tight fit to prevent the left half sleeve 2 and the right half sleeve 3 from splitting apart. ② The rear side of the left half sleeve 2 and the rear side of the right half sleeve 3 can be movably connected by a flexible connecting strip. Several straight holes with openings to the right can be provided on the sleeve wall of the right front part of the left half sleeve 2 along the length direction. Corresponding to each straight hole position, the sleeve wall of the left front part of the right half sleeve 3 can be provided with a corresponding insertion block that complements the shape of the straight hole. When all the insertion blocks are inserted into the straight holes, the left half sleeve 2 and the right half sleeve 3 can be fastened together to form a complete outer sleeve. ③ The sleeve wall on the right front part of the left half sleeve 2 has a front groove opening to the right, and the sleeve wall on the left front part of the right half sleeve 3 has a front boss with a shape complementary to the front groove; the sleeve wall on the left rear part of the right half sleeve 3 has a rear groove opening to the left, and the sleeve wall on the right rear part of the left half sleeve 2 has a rear boss with a shape complementary to the rear groove; after the left half sleeve 2 and the right half sleeve 3 are fastened together, the front boss is embedded in the front groove, and the rear boss is embedded in the rear groove, thus forming a complete outer sleeve; the front boss and the rear boss can be cylindrical, rectangular or square strip bosses, and each boss and the corresponding groove are interference-fitted or tight-fitted to prevent the outer sleeve from breaking or loosening.

[0039] The left half of the clip 5 and the right half of the clip 6 can also be detached and installed using the aforementioned detachable installation structure.

[0040] The left half sleeve 2 and the right half sleeve 3 can also be directly joined together, and then the left half sleeve 2 and the right half sleeve 3 are kept in a snap-fit ​​state by the left half clamp 5 and the right half clamp 6 which can be detachably installed together.

[0041] The detachable installation between the upper end of the card and the lower end of the anti-loosening cap 8 can be achieved through existing technologies such as threaded connections, snap-fit ​​structures on food storage containers, bag hooks and loops, or latch-type quick clamps. The detachable installation between the upper end of the anti-loosening cap 8 and the lower end of the handle can also be achieved through snap-fit ​​structures on food storage containers, bag hooks and loops, or latch-type quick clamps.

[0042] The puncture card core 1 and the handheld part, which are fixedly installed together, form an auxiliary puncture card mechanism. The handheld part and the puncture card core 1 can be fixedly installed through non-removable installation methods such as bonding, riveting, interference fit, or integral molding. In this case, the auxiliary puncture card mechanism is an integral structure, making it easier to replace different types of auxiliary puncture card mechanisms as a whole. Alternatively, it can be fixedly installed through detachable methods such as snap-fit ​​or threaded connection, as in existing technologies. In this case, the auxiliary puncture card mechanism is a split structure, and different types of puncture card cores 1 can be directly replaced. In actual settings, those skilled in the art can set up various types of integral auxiliary puncture card mechanisms or puncture card cores 1 according to the actual needs of medical personnel, and use them interchangeably to achieve the effect of medical personnel taking the card according to the actual situation.

[0043] To make it easier for the outer sheath and the puncture core 1 to pass through the skin at the surgical puncture site, the lower end of the outer sheath is an inverted cone-shaped structure that is larger at the top and smaller at the bottom. At the same time, the lower end face of the outer sheath is inclined in a way that is lower in the front and higher in the back. The lower end of the puncture core 1 is needle-shaped, and its lower end is located below the outer sheath (that is, the lower end of the puncture core 1 protrudes from the lower end of the outer sheath).

[0044] To facilitate the passage of the puncture core 1, minimally invasive surgical instruments, and endoscope through the various surgical channels within the puncture device, the upper inner side of the first surgical channel 4, the second surgical channel 7, and the third surgical channel 9 is provided with a tapered guide port 40 that is larger at the top and smaller at the bottom.

[0045] Depending on the requirements, this device can be a disposable medical device. The left half-head 5, right half-head 6, outer sleeve, and handle can all be integrally molded by injection molding. Those skilled in the art can configure the injection molding process structure of the left half-head 5, right half-head 6, outer sleeve, and handle according to the injection molding process requirements in the prior art. When the materials of the outer sleeve and the puncture core 1 are different from the materials of the puncture head and handle, the outer sleeve can be directly embedded into the puncture head during the injection molding process, and similarly, the puncture core 1 can also be directly embedded into the puncture head during the injection molding process. The outer sleeve and the puncture head can also be fixedly installed through threaded connection, welding, bonding, interference fit, etc. The outer sleeve can be a round tube, square tube, or elliptical flat tube, etc. Anti-slip patterns, protective layers, or other anti-slip structures can be provided on the upper outer side of the puncture head, the outer side of the anti-loosening end cap 8, and the outer side of the handle.

[0046] After the puncture head, anti-loosening end cap 8 and hand-held part are detachably installed together, the overall shape can be oval, hemispherical, prismatic or other irregular shape that is easy to handle. When the puncture head, anti-loosening end cap 8 and hand-held part are all injection molded, their wall thickness and process structure can be set by those skilled in the art according to the experience and requirements of existing injection molding technology.

[0047] With this setup, when the left half-cannula 2 and the right half-cannula 3 are assembled into an outer cannula, and the left half-clamping head 5 and the right half-clamping head 6 are assembled into a puncture clasp, the anti-loosening end cap 8 is fixedly installed with the puncture clasp, effectively preventing the puncture clasp and outer cannula from breaking apart and affecting the surgery. After removing the puncture core 1, the first surgical channel 4, the second surgical channel 7, and the third surgical channel 9 can form a surgical channel for surgical instruments and the laparoscope lens to enter and exit the patient's abdominal / thoracic cavity.

[0048] During use, first assemble the left half of the sleeve 2 and the right half of the sleeve 3 into a complete outer sleeve, and assemble the left half of the clamp head 5 and the right half of the clamp head 6 into a complete puncture clamp head; then fix the anti-loosening end cap 8 together with the puncture clamp head; then hold the handle and pass the puncture clamp core 1 from top to bottom through the third surgical channel 9, the second surgical channel 7 and the first surgical channel 4 in sequence; finally fix the handle together with the anti-loosening end cap 8 to complete the assembly of this device.

[0049] Insert the device into the patient's body along the surgical incision on the skin, then separate the handle from the anti-loosening end cap 8. Hold the handle and pull out the puncture core 1 to open the first surgical channel 4, the second surgical channel 7, and the third surgical channel 9, forming a complete surgical channel.

[0050] After completing thoracic, abdominal, or stoma surgery, the outer tube remains in the patient's body. At this time, the anti-loosening cap 8 is removed, and medical staff can still quickly insert the drainage tube 41 or fistula into the patient's body using the second surgical channel 7 and the first surgical channel 4. This can effectively improve the insertion speed and accuracy of the drainage tube 41 or fistula, shortening the operation time. When the drainage tube 41 is in place or the fistula reaches the stoma point, the puncture head is held and the outer tube is pulled out. After the outer tube is removed from the body along the drainage tube 41 or fistula, the puncture head is disassembled, separating it into the left half puncture head 5 and the right half puncture head 6. At the same time, the outer tube is also disassembled, separating it into the left half tube 2 and the right half tube 3. The outer tube and the puncture head can then be removed from the drainage tube 41 or fistula to avoid affecting the normal use of the drainage tube 41 or fistula.

[0051] This utility model has a reasonable and compact structure and is easy to use. During thoracic, abdominal, or fistula surgeries, the anti-loosening end cap 8 can effectively prevent the outer tube and puncture head from breaking or loosening, thus avoiding interference with normal surgery. After thoracic, abdominal, or fistula surgeries, when performing drainage surgery, the outer tube is still in the patient's body. At this time, the anti-loosening end cap 8 is removed first, and the drainage tube 41 or fistula is inserted into the predetermined position in the patient's body through the outer tube. Then, the outer tube is pulled out of the patient's body, and the outer tube and puncture head are disassembled. The outer tube and puncture head can then be removed from the drainage tube 41 or fistula, thereby effectively preventing the puncture head from interfering with the normal use of the drainage tube 41 or fistula.

[0052] The above-mentioned detachable puncture card device can be further optimized and / or improved according to actual needs:

[0053] Example 2: As an optimization of the above examples, as shown in the appendix Figure 1-4 As shown in Figure 9, a slot 10 with an opening to the right is provided in the middle of the right side of the left half sleeve 2. The slot 10 is provided along the length of the left half sleeve 2. A locking platform 11 with a shape complementary to the slot 10 is provided on the right half sleeve 3 corresponding to the position of the slot 10. The locking platform 11 can be fastened together with the slot 10.

[0054] In the above technical solution, the middle part of the slot 10 is connected to the cavity inside the left half sleeve 2, and the shape of the middle part of the locking platform 11 is adapted to and connected to the shape of the cavity inside the right half sleeve 3. The locking platform 11 can be a rectangular slot, and the locking platform 11 can be a corresponding rectangular locking platform. The rectangular locking platform and the rectangular slot can be fastened together by tight fit or interference fit. When the two are separated, they can be pried open along the gap between the left half locking head 5 and the right half locking head 6 with the help of tools. The slot 10 can be a dovetail slot, a T-slot, or a drum-shaped slot with a drum-shaped cross section, etc., and the locking platform 11 can be a dovetail-shaped locking platform, a T-shaped locking platform, or a drum-shaped locking platform that is adapted to the slot 10. In this embodiment, the slot 10 is a dovetail slot. After the dovetail-shaped locking platform can be fastened together with the dovetail slot, it can effectively prevent the left half sleeve 2 and the right half sleeve 3 from loosening and cracking, and can also make the sealing effect between the left half sleeve 2 and the right half sleeve 3 better.

[0055] To facilitate the alignment and installation of the left half sleeve 2 and the right half sleeve 3, the upper end of the slot 10 is open vertically, the lower end of the slot 10 is a blind end, and the shape of the lower end of the slot platform 11 is adapted to the shape of the lower end of the slot 10.

[0056] Assembly process of the outer sleeve: Align the lower end of the locking platform 11 on the right half sleeve 3 with the upper end of the locking groove 10 on the left half sleeve 2, so that the lower end of the locking platform 11 is inserted into the inner side of the upper end of the locking groove 10; hold the left half locking head 5 firmly with one hand to fix the left half sleeve 2, and push the right half locking head 6 downward with the other hand so that the locking platform 11 can slide downward in the locking groove 10 until the upper end face of the left half locking head 5 is flush with the upper end face of the right half locking head 6. At this time, the upper ends of the left half sleeve 2 and the right half sleeve 3 are aligned, and the locking platform 11 can no longer slide downward along the locking groove 10, thus completing the assembly of the outer sleeve.

[0057] The disassembly and separation process of the outer sleeve: Hold the left half of the clamp 5 firmly with one hand, and pull the right half of the clamp 6 upward with the other hand to make the clamping platform 11 slide upward along the clamping groove 10 until the left half of the sleeve 2 and the right half of the sleeve 3 are completely separated.

[0058] Example 3: As an optimization of the above examples, as shown in the appendix Figure 1-4 As shown, the left half of the card head 5 has a limiting groove 12 with an opening to the right and extending vertically in the middle of the right side. The right half of the card head 6, corresponding to the position of the limiting groove 12, has a limiting boss 13 with a shape complementary to the limiting groove 12. The limiting boss 13 can be engaged with the limiting groove 12.

[0059] In the above technical solution, the limiting groove 12 can be a dovetail groove, a T-shaped groove, or a groove with a drum-shaped cross-section, etc. The cavity in the middle of the limiting boss 13 is connected to the second surgical channel 7. The limiting boss 13 can be a dovetail boss, a T-shaped boss, or a drum-shaped boss, etc. In this embodiment, the limiting groove 12 is a dovetail groove to prevent the left half of the retainer 5 and the right half of the retainer 6 from cracking and failing during the operation. In addition, in this embodiment, the limiting groove 12 is also inverted conical in shape with a larger upper end and a smaller lower end. The shape of the limiting boss 13 is complementary and compatible with the shape of the limiting groove 12. The inverted conical groove with a larger upper end and a smaller lower end and the inverted conical boss cooperate to make it easier to insert them together.

[0060] Assembly process of the stamping head: Align the lower end of the limiting protrusion 13 with the upper end of the limiting groove 12, and insert the lower end of the limiting protrusion 13 into the inner side of the upper end of the limiting groove 12; hold the left half of the stamping head 5 firmly with one hand, and push the right half of the stamping head 6 downward with the other hand, so that the limiting protrusion 13 slides down along the limiting groove 12 until the upper end face of the left half of the stamping head 5 is flush with the upper end face of the right half of the stamping head 6, thus completing the assembly of the stamping head.

[0061] When disassembling the detachable tamper head, hold the left half of the tamper head 5 firmly with one hand, and pull the right half of the tamper head 6 upward with the other hand to separate the left half of the tamper head 5 and the right half of the tamper head 6.

[0062] Example 4: As an optimization of the above embodiments, as shown in the appendix Figure 1-2 As shown, a positioning device is slidably installed on the outer side of the outer sleeve; the positioning device includes a positioning plate 14, a locking nut 15, and a hollow stud 16. The positioning plate 14 has an outer sleeve mounting hole that runs vertically through the middle. The positioning plate 14 is fitted inside the outer sleeve mounting hole. A stud 16 with its lower end fixedly installed together with the positioning plate 14 is fixedly installed on the upper middle part of the positioning plate 14. The locking nut 15 is threadedly connected to the outside of the stud 16. An adjustment notch 17 with an upward opening and running through the front and back is provided on the upper side of the stud 16. The lower end of the adjustment notch 17 is located below the locking nut 15.

[0063] During use, after loosening the locking nut 15, the positioning plate 14 can be slid up and down as needed to adjust the distance between the positioning plate 14 and the lower end of the embossed core 1. When the distance between the two meets the requirements, the locking nut 15 is tightened in the opposite direction. The locking nut 15 squeezes the adjusting notch 17 to make its opening size smaller, so that the upper end of the stud 16 is squeezed and deformed to clamp the outer tube, thus fixing the positioning device on the outer tube.

[0064] With this design, during surgery, after the outer tube is inserted into the patient's cavity through the surgical puncture site, the lower end of the positioning plate 14 presses precisely against the patient's skin, effectively securing the device and preventing the outer tube from sliding within the surgical puncture site. This minimizes the impact on the surgical procedure, saves surgical time, and prevents the puncture core 1 from slipping into the patient's cavity due to its own weight, thus preventing injury to the tissues within the patient's cavity. The positioning device is simple in structure and easy to operate. The smooth surface of the outer tube prevents frictional damage and bleeding at the surgical puncture site, reducing patient discomfort. Furthermore, removing the outer tube avoids secondary damage to the surgical puncture site, promoting better postoperative recovery.

[0065] Depending on the requirements, the outer surface of the outer tube is marked with a graduation of 45 along its length. Different patients have different skin thicknesses, and graduation 45 can be used to measure the patient's skin thickness. This allows for better protection of the patient's internal tissues during subsequent punctures, improving surgical efficiency, saving operation time, and enhancing the stability of the device. The positioning plate 14 can be a flexible suction cup, or a rigid positioning plate 14 can have an adhesive layer on its underside that adheres to the patient's skin to prevent the device from detaching. In this embodiment, the opening size at the upper end of the adjusting notch 17 is larger than the opening size at the lower end to achieve a better fixing and locking effect.

[0066] Since the aforementioned positioning device cannot be removed from the drainage tube 41 or fistula, this device with a positioning device is generally not suitable for drainage surgery. However, the positioning plate 14 can be divided into a left positioning plate 14 and a right positioning plate 14, which can be detachably installed together. The detachable installation structure can refer to the detachable installation structure used for the left half-sleeve 2 and the right half-sleeve 3. The stud 16 is divided into two parts, which can eliminate the need for other connecting structures. The locking nut 15 is an integral piece. In this way, after the outer sleeve is pulled out, the positioning plate 14 and the stud 16 can be removed. Only the locking nut 15 is left on the drainage tube 41, minimizing the impact of the positioning device on the use of the drainage tube 41.

[0067] Example 5: As an optimization of the above embodiments, as shown in the appendix Figure 1 , 3As shown in Figures 4 and 6, the upper right front part and the upper right rear part of the left half of the locking head 5 are respectively provided with a first mounting port 18 opening to the upper right. The right half of the locking head 6 corresponding to each first mounting port 18 is respectively provided with a second mounting port opening to the upper left. A locking tongue 19 with its lower left part inserted into the first mounting port 18 is fixedly installed in each second mounting port. The upper ends of the two locking tongues 19 are located above the piercing head and are bent outward into barbs 20. The lower front inner side and the lower rear inner side of the anti-loosening end cap 8 are respectively provided with a buckle plate 21 and a stop baffle 22, which are staggered. After the lower end of the anti-loosening end cap 8 is rotated and fastened together with the upper end of the piercing head, the barbs 20 on each locking tongue 19 can be hooked together with the corresponding buckle plate 21, and the stop baffle 22 can just press against the locking tongue 19 to prevent the barbs 20 and buckle plates 21 from being misaligned and disengaged.

[0068] Assembly process of left half latch 5 and right half latch 6: When left half latch 5 and right half latch 6 are engaged, hold left half latch 5 with one hand and right half latch 6 with the other hand, align the lower left part of the latch 19 with the corresponding first mounting port 18, and then press left half latch 5 and right half latch 6 with both hands at the same time to insert the lower left part of each latch 19 into the corresponding first mounting port 18. If there is a height difference between the upper end face of left half latch 5 and the right end face of right half latch 6 and they are not aligned, press left half latch 5 or right half latch 6 up and down until they are completely flush. Since the latch 19 and the corresponding first mounting port 18 are tightly fitted, when disassembling, a tool can be inserted into the connecting seam between left half latch 5 and right half latch 6 and gently pried to separate left half latch 5 and right half latch 6.

[0069] When the left half of the latch 5 and the right half of the latch 6 are in a sliding engagement, hold the left half of the latch 5 with one hand and the right half of the latch 6 with the other hand, align the lower left end of the latch tongue 19 with the upper end of the corresponding first mounting port 18, and align the lower end of the limiting protrusion 13 with the upper end of the limiting groove 12. Press the right half of the latch 6 downwards until the lower left end of the latch tongue 19 is exactly against the bottom of the first mounting port 18. At this time, the upper surface of the left half of the latch 5 is flush with the upper surface of the right half of the latch 6. Push the right half of the latch 6 upwards in the opposite direction to separate the left half of the latch 5 and the right half of the latch 6.

[0070] The process of rotating and engaging the anti-loosening end cap 8: After the outer sleeve and the anti-loosening end cap are assembled, first put the anti-loosening end cap 8 on the outer side of the upper end of the anti-loosening end cap; then hold the anti-loosening end cap 8 with one hand and rotate the anti-loosening end cap 8 with the other hand, so that the anti-loosening end cap 8 rotates relative to the anti-loosening end cap 19, so that the barb 20 at the upper end of the locking tongue 19 can hook together with the corresponding buckle 21 (even if the lower side of the barb 20 abuts against the upper side of the corresponding buckle 21), until it can no longer rotate. At this time, the stop baffle 22 just abuts against the corresponding locking tongue 19, completing the rotational engagement between the anti-loosening end cap 8 and the anti-loosening end cap 8.

[0071] Disassembly process of the punch head and the anti-loosening end cap 8: Hold the punch head firmly with one hand and rotate the anti-loosening end cap 8 in the opposite direction with the other hand. When the two loosen, they can be disassembled.

[0072] To improve the connection stability between the anti-loosening end cap 8 and the tamper head, two 7-shaped locking hooks 43 with their upper ends inside the anti-loosening end cap 8 can be symmetrically fixedly installed on the upper left side of the left half tamper head 5 and the upper right side of the right half tamper head 6. A limiting plate 44 is fixedly installed on the inner wall of the lower end of the anti-loosening end cap 8 corresponding to the lower position of the upper end of the 7-shaped locking hook 43. The upper side of the limiting plate 44 is hooked and fastened together with the 7-shaped locking hook 43.

[0073] To quickly and easily determine whether the anti-loosening cap 8 and the stamping head are screwed in place, a first identification part 46 can be provided on the outer right side of the upper end of the right half of the stamping head 6, and a second identification part 47 can be provided on the anti-loosening cap 8 corresponding to the first identification position. When the first identification part 46 and the second identification part 47 are completely aligned, it means that the anti-loosening cap 8 and the stamping head are screwed in place. Otherwise, it is not screwed in place and needs to be rotated further. In this embodiment, the first identification part 46 is an equilateral triangle with the pointed corner pointing upwards, and the second identification part 47 is an inverted triangle with the pointed corner pointing downwards. The anti-loosening cap 8 corresponding to the upper position of the small triangle can also be provided with a rotation direction indicator extending in the front-back direction. When the pointed corners between the equilateral triangle and the inverted triangle are aligned, it means that the anti-loosening cap 8 and the stamping head are screwed in place.

[0074] Example 6: As an optimization of the above embodiments, as shown in the appendix Figure 1 , 2As shown in Figures 5, 7, and 8, the handle includes a U-shaped base 23, an inverted U-shaped elastic locking piece 24, and a downward-facing handheld cap 25. The upper side of the anti-loosening end cap 8 has a U-shaped base 23, and the lower center of the U-shaped base 23 has a downward-facing pinhole. The upper end of the embossed core 1 is fixedly installed inside the pinhole. A positioning ring 26 is fixedly installed on the outer side of the upper end of the U-shaped base 23. The upper end of the positioning ring 26 is fixedly installed together with the inner side of the middle of the upper end of the handheld cap 25, and the lower end of the handheld cap 25 abuts against the upper side of the lower end of the U-shaped base 23. The lower left and lower right sides of the U-shaped base 23 each have a first through hole 27 extending vertically. Corresponding to each first through hole 27, the anti-loosening end cap 8 has a second through hole 28 extending both internally and externally. The outer side of the positioning ring 26 is fixedly installed... A U-shaped elastic locking piece 24 is fixedly installed inside the handheld cap 25. The lower end of the U-shaped elastic locking piece 24 passes through the corresponding first through hole 27 and second through hole 28 from top to bottom and then bends outward to form a hook 29. The hook 29 can hook onto the inner wall of the top of the anti-detachment end cap. The left side of the handheld cap 25 has a left pressing notch with an opening facing downward and penetrating inside and outside. The left pressing notch has a left pressing block 30 whose right end is fixedly installed together with the left side of the U-shaped elastic locking piece 24. The right side of the handheld cap 25, corresponding to the left pressing notch, has a right pressing notch 31 with an opening facing downward and penetrating inside and outside. The right pressing notch 31 has a right pressing block 32 whose left end is fixedly installed together with the right side of the U-shaped elastic locking piece 24.

[0075] In the above technical solution, in order to facilitate the disassembly and assembly of the inverted U-shaped elastic locking piece 24, the shape and size of the first through hole 27 and the second through hole 28 are adapted to the shape and size of the hook 29. In addition, the first through hole 27 and the second through hole 28 also reserve sufficient space for the elastic deformation of the inverted U-shaped elastic locking piece 24.

[0076] To increase the support stability between the lower end of the handheld cap 25 and the upper side of the lower end of the T-shaped base 23, an inner ring groove is provided on the inner side of the lower end of the handheld cap 25. The inner ring groove at the front of the lower end of the handheld cap 25 and the inner ring groove at the rear of the lower end are provided with positioning bosses that are fixedly installed together with the corresponding positions of the lower end and the upper side of the lower end of the T-shaped base 23. The positioning bosses and the inner ring grooves can be interference fit or tight fit.

[0077] To facilitate pressing, the left end of the left pressing block 30 and the right end of the right pressing block 32 can both protrude a certain height from the outside of the handheld cap 25.

[0078] The positioning ring 26 and the handheld cap 25 can be fixed together by means of bonding, welding, hot melt welding, riveting or integral molding in the prior art.

[0079] To facilitate the entry of the hook 29 into the second through hole 28, both hooks 29 are provided with guide slopes at their lower ends. The structure and angle of the guide slopes can be adjusted by those skilled in the art according to actual needs.

[0080] According to the requirements, the T-shaped base 23, the inverted U-shaped elastic locking piece 24 and the downward-opening hand cap 25 in this embodiment can all be realized by injection molding, wherein the inverted U-shaped elastic locking piece 24, the hook 29, the left pressing block 30 and the right pressing block 32 can be integrally molded.

[0081] Installation process of puncture core 1: When it is necessary to insert puncture core 1 into the outer tube, hold the puncture head and anti-loosening end cap 8 with one hand and the handle with the other hand. Align the lower end of puncture core 1 with the upper end of the third surgical channel 9. Then, pass puncture core 1 through the third surgical channel 9 and the second surgical channel 7 from top to bottom. As puncture core 1 enters the first surgical channel 4, the lower end of the inverted U-shaped elastic locking piece 24 gradually approaches the anti-loosening end cap 8. At this time, the position of the hook 29 can be adjusted again to align it with the second through hole 28. When the guide slope of the lower end of the hook 29 contacts the top of the anti-loosening end cap 8, press down hard. The hook 29 will automatically deform elastically towards the puncture core 1. After the hook 29 passes through the second through hole 28, it will automatically reset under the action of restoring force and hook onto the inner wall of the top of the anti-loosening end cap 8. At this time, the lower end of puncture core 1 will just pass out from the lower end of the outer tube, thus completing the fixed installation of puncture core 1.

[0082] The process of removing the puncture core 1: Hold the puncture head and the anti-loosening end cap 8 with one hand, and press the left pressing block 30 and the right pressing block 32 with the index finger and thumb of the other hand at the same time. Under the action of external force, the lower left and lower right parts of the inverted U-shaped elastic locking piece 24 will elastically deform towards the puncture core 1 at the same time, forcing the hooks 29 at the lower left and lower right ends of the inverted U-shaped elastic locking piece 24 to disengage from the inner wall of the top of the anti-loosening end cap 8 and unlock, so that the puncture core 1 can be pulled out and the surgical channel can be opened.

[0083] Example 7: As an optimization of the above embodiments, as shown in the appendix Figure 1 , 3 As shown in Figure 4, the upper middle part of the stamp head is provided with an upward-opening sealing ring groove, and the sealing ring groove is provided with a downward-opening lower sealing cap. The lower sealing cap is provided with a first sealing hole that runs through the top and bottom in the middle. The lower sealing cap includes a left half sealing cap 33 and a right half sealing cap 34 with opposite openings.

[0084] In the above technical solution, the sealing ring groove includes a left half-ring groove and a right half-ring groove. The left half-ring groove is located on the left half-clamping head 5, and the right half-ring groove is located on the right half-clamping head 6. The left half-sealing cap 33 is actually installed in the left half-ring groove, and the right half-sealing cap 34 is installed in the right half-ring groove. To ensure the sealing effect, the right end face of the left half-sealing cap 33 can be slightly higher than the right end face of the left half-clamping head 5, and the left end face of the right half-sealing cap 34 can also be slightly higher than the left end face of the right half-clamping head 6.

[0085] To prevent the left half-sealing cap 33 and the right half-sealing cap 34 from coming out of the sealing ring groove, a lower limit inner ring groove is provided on the stamping head corresponding to the lower end of the lower sealing cap. The lower limit inner ring groove is provided with a limit inner ring platform whose outer side is integrally formed with the inner side of the lower end of the lower sealing cap.

[0086] The inner diameter of the first sealing hole is smaller than the outer diameter of the puncture core 1. When the puncture core 1 or surgical instrument passes through the first sealing hole, the sealing cap can form a seal with the puncture core 1, which can prevent blood from flowing out from the gap between the surgical channel and the surgical instrument, and also prevent air leakage, which would affect the surgical operation.

[0087] As required, the center of the anti-loosening end cap 8 is recessed downwards to form an inverted conical guide opening 40, which is wider at the top and narrower at the bottom. The inverted conical guide opening 40 greatly shortens the length of the third surgical channel 9, making it easier to insert surgical instruments and the lens of the endoscope into the second surgical channel 7. The inner side of the top of the lower sealing cap may be provided with a conical hole that is narrower at the top and wider at the bottom. This reduces the thickness of the cap top during the process of the surgical instruments squeezing the lower sealing cap, leaving room for the deformation of the top of the lower sealing cap and reducing the downward resistance of the surgical instruments.

[0088] Example 8: As an optimization of the above embodiments, as shown in the appendix Figure 1 , 6 As shown, the inner side of the inner wall of the anti-detachment end cap is provided with a sealing ring platform 35 that can be fitted onto the outer side of the stamp core 1. An upper sealing cap 36 with an upward opening is fitted onto the outer side of the sealing ring platform 35. A second sealing hole with vertical penetration is provided in the middle of the upper sealing cap 36. The lower end of the upper sealing cap 36 abuts against the upper side of the stamp head. A sealing pressure ring 37 is fixedly installed on the outer side of the middle of the upper sealing cap 36.

[0089] In the above technical solution, in order to facilitate the insertion of surgical instruments and the lens of the endoscope into the second surgical channel 7, the top of the anti-loosening end cap 8 is recessed downward to form an inverted conical guide bevel 48 that is larger at the top and smaller at the bottom.

[0090] To ensure a more secure fit for the upper sealing cap 36 and prevent it from falling off, a semi-circular outer ring platform with an anti-detachment cross-section is provided on the outer side of the lower end of the sealing ring platform 35. For better sealing performance, an annular boss may be provided in the center of the lower end face of the sealing ring platform 35.

[0091] The upper sealing cap 36, together with the lower sealing cap, forms a double seal, effectively preventing blood from flowing out along the gap between the surgical instrument or trocar core 1 and the trocar head, and also effectively preventing air leakage. Depending on the requirements, both the upper sealing cap 36 and the lower sealing cap can be made using existing medical-grade rubber, medical-grade silicone, or other medical-grade elastic sealing materials.

[0092] Example 9: As an optimization of the above embodiments, as shown in the appendix Figure 1 , 10As shown, the left half clamp 5, located on the upper left side of the left half sleeve 2, has a left limiting hole with an opening to the right. A left limiting post 38, whose right end is fixedly installed together with the left side of the left half sleeve 2, is fixedly installed inside the left limiting hole. The right half clamp 6, located on the upper end of the right half sleeve 3, has a right limiting hole 39 with an opening to the left. A right limiting post, whose left end is fixedly installed together with the right side of the right half sleeve 3, is fixedly installed inside the right limiting hole 39.

[0093] With this configuration, the left limiting post 38 and the right limiting post can effectively increase the contact area and connection strength between the upper end of the left half sleeve 2 and the left half clamp 5, and between the right half sleeve 3 and the right half clamp 6, thus better securing the left half sleeve 2 and the left half clamp 5, and the right half sleeve 3 and the right half clamp 6 together. During the installation and disassembly of the left half sleeve 2 and the right half sleeve 3, the risk of the left half sleeve 2 and the right half sleeve 3 falling off the clamp head is effectively reduced.

[0094] Depending on the requirements, the left limiting post 38 and the right limiting post are made of the same material as the outer sleeve; the fixed installation between the left limiting post 38, the left half sleeve 2 and the left half clamp 5, the right limiting post, the right half sleeve 3 and the right half clamp 6 can be achieved by bonding, welding or interference fit in the existing technology.

[0095] Example 10: A medical device comprising a detachable puncture card as described above.

[0096] The detachable puncture device in the above technical solution can be implemented based on the above embodiments, but it is generally not suitable for thoracic / abdominal drainage surgery and fistula surgery.

[0097] Taking the surgical forceps 42 (suitable for minimally invasive surgery) as an example, such as Figure 12 As shown, the surgical forceps 42 are inserted into the surgical channel, with the clamp at the front end extending from the lower end of the outer tube. Medical personnel can control the opening and closing of the clamp through the handle at the rear end of the surgical forceps 42 to perform the surgery.

[0098] This utility model has a reasonable and compact structure and is easy to use. After thoracic or abdominal surgery, the outer tube remains in the patient's body. After removing the anti-loosening end cap 8, medical staff can still quickly insert the drainage tube 41 or fistula into the patient's body using the surgical channel within the outer tube, effectively improving the insertion speed and accuracy of the drainage tube 41 or fistula, and shortening the operation time. After insertion, the outer tube is removed, and the puncture head and outer tube are separated, allowing it to be removed from the drainage tube 41 or fistula to avoid affecting its use. In cases where drainage surgery is not required, the positioning device allows medical staff to control the insertion depth of the outer tube, reducing the difficulty of the puncture device operation. After the outer tube is inserted into the patient's cavity along the surgical puncture site, the lower end of the positioning plate 14 presses against the patient's skin, better securing the puncture device and preventing the outer tube from sliding within the surgical puncture site, reducing the impact on the surgical operation and saving operation time. The smooth surface of the outer tube avoids secondary damage to the surgical puncture site, which is more conducive to postoperative recovery.

[0099] The working principle and usage process of this utility model (taking the installation method of the dovetail-shaped slot 10 as an example):

[0100] S1, Assemble this device.

[0101] S11, Assemble the stamping head and outer sleeve. At this point, the left half sleeve 2 and the left half stamping head 5 are fixedly installed together, and the right half sleeve 3 is also fixedly installed together with the right half stamping head 6.

[0102] S111, hold the left half of the clamp head 5 with your left hand and the right half of the clamp head 6 with your right hand, align the lower end of the clamping platform 11 on the right half of the sleeve 3 with the upper end of the clamping groove 10 on the left half of the sleeve 2, and insert the lower end of the clamping platform 11 into the inner side of the upper end of the clamping groove 10.

[0103] S112, grip the left half of the clamp 5 firmly, fix the left half of the sleeve 2, and push the right half of the clamp 6 downwards to allow the clamping platform 11 to slide downwards within the clamping slot 10.

[0104] S113, when the lower end of the limiting boss 13 is aligned with the upper end of the limiting groove 12, the right hand continues to push the right half of the locking head 6 downwards. The locking platform 11 will continue to slide downwards in the locking groove 10. At the same time, the limiting boss 13 slides downwards along the limiting groove 12 until the upper end face of the left half of the locking head 5 is flush with the upper end face of the right half of the locking head 6.

[0105] S12, Assemble the anti-loosening end cap 8. Hold the pin head with your left hand and the anti-loosening end cap 8 with your right hand. Place the anti-loosening end cap 8 on the outer side of the upper part of the pin head. Rotate the anti-loosening end cap 8 with your right hand so that the anti-loosening end cap 8 rotates relative to the pin head. The barb 20 at the upper end of the locking tongue 19 will gradually hook onto the corresponding buckle plate 21. Continue to rotate until the stop baffle 22 is exactly against the corresponding locking tongue 19. At this time, the sharp corner at the lower end of the second identification part 47 is aligned with the first identification part 46, and the installation is completed.

[0106] S13, Assemble the stamp core 1. At this point, the stamp core 1 is fixedly installed together with the handheld part.

[0107] Hold the puncture head and anti-loosening cap 8 with your left hand and the handle with your right hand, aligning the lower end of the puncture core 1 with the upper end of the third surgical channel 9; apply downward force with your right hand to insert the puncture core 1 into the third surgical channel 9, the second surgical channel 7, and the first surgical channel 4 from top to bottom; when the hook 29 of the inverted U-shaped elastic locking piece 24 approaches the top of the anti-loosening cap 8, rotate the handle with your right hand to align the hook 29 with the second through hole 28; when the guide slope at the lower end of the hook 29 contacts the top of the anti-loosening cap 8, continue to press down, and the hook 29 will automatically deform elastically towards the puncture core 1 and enter the second through hole 28; after the hook 29 passes through the second through hole 28, no further force is needed, and the hook 29 will automatically reset under the action of restoring force, hooking onto the inner wall of the top of the anti-loosening cap 8, while the lower end of the puncture core 1 will just pass out from the lower end of the outer sleeve.

[0108] S14, Assemble the positioning device. Loosen the locking nut 15 and fit the positioning disc 14 onto the outer tube; adjust the distance between the positioning disc 14 and the lower end of the puncture core 1 by sliding the positioning disc 14 up and down according to the patient's condition and the medical staff's experience; rotate in the opposite direction and tighten the locking nut 15 to fix the positioning disc 14 onto the outer tube. (This step is omitted in drainage or stoma surgery.)

[0109] S2, cut open the patient's skin, make a surgical incision, insert the detachable puncture card into the patient's body through the surgical incision until the positioning plate 14 contacts the patient's skin and supports the outer tube.

[0110] During this process, carefully observe whether the position of the positioning device is appropriate. If it is not appropriate, make minor adjustments again, and simultaneously adjust the position of the positioning devices on other detachable puncture devices. (During drainage or stoma surgery, there is no adjustment process for the positioning disc 14.)

[0111] S3, remove the puncture core 1 and open the surgical channel. Hold the puncture head and anti-loosening end cap 8 with your left hand, and hold the handle with your right hand. Press the left pressing block 30 and the right pressing block 32 inward (towards the palm) with your index finger and thumb at the same time. Under the action of external force, the lower left and lower right parts of the inverted U-shaped elastic locking piece 24 will deform elastically towards the puncture core 1 at the same time, forcing the hook 29 to disengage from the inner wall of the top of the anti-loosening end cap 8 and unlock it. Pull the puncture core 1 upward to open the surgical channel.

[0112] S4. Based on the surgical needs, select appropriate surgical instruments or endoscopes, and insert them into the patient's body along the surgical channel. Figure 12 As shown.

[0113] S5. After completing the thoracic or abdominal surgery, remove the outer tube from the patient's body. (This step is omitted if thoracic or abdominal drainage surgery is required.)

[0114] S6, continue with the thoracic or abdominal drainage procedure, insert drainage tube 41, and then remove the puncture head and outer tube from drainage tube 41.

[0115] S61, remove the locking end cap 8. Hold the chuck head firmly with your left hand, and rotate the locking end cap 8 in the opposite direction with your right hand. After both are loosened, remove the locking end cap 8.

[0116] S62, insert the drainage tube 41 (or fistula) into the patient's body along the surgical channels (first surgical channel 4 and second surgical channel 7), such as Figure 11 As shown.

[0117] S63, hold the drainage tube 41 in place with one hand, and pull the outer tube out of the patient's body with the other hand.

[0118] S64, hold the left half of the clamp 5 firmly with your left hand and the right half of the clamp 6 firmly with your right hand, and pull the right half of the clamp 6 upward forcefully so that the clamping platform 11 slides upward along the clamping groove 10 until the left half of the clamp 5 and the right half of the clamp 6 are completely separated and detached from the drainage tube 41.

[0119] The above technical features constitute various embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A detachable puncture card device, characterized in that, It includes a puncture head, a puncture core, and left and right half-cannulas with opposite openings. The left and right half-cannulas are assembled together to form an outer cannulas, and the cavity inside the outer cannulas forms the first surgical channel that runs vertically through the body. The puncture head includes a left half puncture head and a right half puncture head that can be detachably installed together. The upper end of the left half sleeve is fixedly installed together with the middle of the lower end of the left half puncture head, and the upper end of the right half sleeve is fixedly installed together with the middle of the lower end of the right half puncture head. The puncture head corresponding to the position of the first surgical channel is provided with a second surgical channel that runs vertically through the upper and lower parts. The upper end of the puncture card head is detachably fitted with a downward-facing anti-loosening end cap. The anti-loosening end cap corresponding to the position of the second surgical channel has a third surgical channel that runs vertically through it. A handle is detachably fitted on the upper end of the anti-loosening end cap. The puncture card core passes through the first surgical channel, the second surgical channel and the third surgical channel from bottom to top and is then fixedly installed together with the lower middle part of the handle.

2. The detachable puncture device according to claim 1, characterized in that, The left half of the sleeve has a right-opening slot in the middle of the right side. The slot is set along the length of the left half of the sleeve. The right half of the sleeve corresponding to the slot position has a locking platform with a shape complementary to the slot. The locking platform can be fastened together with the slot. Or / and, the left half of the card head has a limiting groove with an opening to the right and extending vertically in the middle of the right side, and a limiting boss with a complementary shape to the limiting groove is provided on the right half of the card head corresponding to the position of the limiting groove. The limiting boss can be engaged with the limiting groove.

3. The detachable puncture device according to claim 1 or 2, characterized in that, A positioning device is slidably installed on the outer side of the outer tube; the positioning device includes a positioning plate, a locking nut and a hollow stud. The center of the positioning plate has an outer tube mounting hole that runs vertically through it. The positioning plate is fitted inside the outer tube mounting hole. A stud with its lower end fixedly installed together with the positioning plate is fixedly installed on the upper center of the positioning plate. A locking nut is threadedly connected to the outside of the stud. An adjustment notch with an upward opening and running through the front and back is provided on the upper side of the stud. The lower end of the adjustment notch is located below the locking nut.

4. The detachable puncture device according to claim 1 or 2, characterized in that, The left half of the card head has a first mounting port with an opening facing upward to the right on the upper right front part and the upper right rear part on the upper right side. Corresponding to each first mounting port, the right half of the card head has a second mounting port with an opening facing upward to the left. Each second mounting port has a locking tongue that is inserted into the first mounting port on the lower left side. The upper ends of the two locking tongues are located above the card head and are bent outward into barbs. The lower end of the anti-loosening end cap has a buckle plate and a stop baffle plate on the inner front and inner rear sides, respectively. The buckle plate and the stop baffle plate are staggered. After the lower end of the anti-loosening end cap is rotated and fastened together with the upper end of the card head, the barbs on each locking tongue can be hooked together with the corresponding buckle plate, and the stop baffle plate can just hold the locking tongue to prevent the barbs and buckle plates from being misaligned and disengaged.

5. The detachable puncture device according to claim 3, characterized in that, The left half of the card head has a first mounting port with an opening facing upward to the right at the front right side and the rear right side at the top right side. Corresponding to each first mounting port, the right half of the card head has a second mounting port with an opening facing upward to the left. Each second mounting port has a locking tongue that is inserted into the first mounting port at the lower left side. The upper ends of the two locking tongues are located above the card head and are bent outward into barbs. The inner front side and the inner rear side of the lower end of the anti-loosening end cap are respectively provided with a buckle plate and a stop baffle plate, which are staggered. After the inner side of the lower end of the anti-loosening end cap is rotated and fastened together with the outer side of the upper end of the card head, the barb on each locking tongue can be hooked with its corresponding buckle plate, and the stop baffle plate can press against the locking tongue to prevent the barb and buckle plate from being misaligned and disengaged.

6. The detachable puncture device according to claim 1, 2, or 5, characterized in that, The handle includes a U-shaped base, an inverted U-shaped elastic locking piece, and a downward-facing handle cap. The upper side of the anti-loosening end cap has a U-shaped base, and the lower center of the U-shaped base has a downward-facing pinhole. The upper end of the tamper-evident core is fixedly installed inside the pinhole. A positioning ring is fixedly installed on the outer side of the upper end of the U-shaped base, and the upper end of the positioning ring is fixedly installed together with the inner side of the upper center of the handle cap. The lower end of the handle cap abuts against the upper side of the lower end of the U-shaped base. The lower left and lower right sides of the lower end of the U-shaped base each have a first through hole extending vertically. Corresponding to each first through hole, the anti-loosening end cap has a second through hole extending both internally and externally. A fitting is fixedly installed on the outer side of the positioning ring. The inverted U-shaped elastic locking piece inside the handheld cap has its lower end passing through the corresponding first and second through holes from top to bottom and then bending outward to form a hook. The hook can hook onto the inner wall of the top of the anti-slip cap. The left side of the handheld cap has a downward-facing and through-hole left pressing notch. Inside the left pressing notch is a left pressing block whose right end is fixedly installed with the corresponding position on the left side of the inverted U-shaped elastic locking piece. The right side of the handheld cap, corresponding to the position of the left pressing notch, has a downward-facing and through-hole right pressing notch. Inside the right pressing notch is a right pressing block whose left end is fixedly installed with the corresponding position on the right side of the inverted U-shaped elastic locking piece. Or / and, the upper middle part of the stamp card head is provided with an upward-opening sealing ring groove, the sealing ring groove is provided with a downward-opening lower sealing cap, the lower sealing cap is provided with a first sealing hole that runs through the top and bottom in the middle, and the lower sealing cap includes a left half sealing cap and a right half sealing cap with opposite openings. Or / and, the inner side of the inner wall of the anti-detachment end cap is provided with a sealing ring platform that can be fitted onto the outer side of the stamping core. An upper sealing cap with an upward opening is fitted onto the outer side of the sealing ring platform. A second sealing hole with vertical penetration is provided in the middle of the upper sealing cap. The lower end of the upper sealing cap abuts against the upper side of the stamping head. A sealing pressure ring is fixedly installed on the outer side of the middle of the upper sealing cap.

7. The detachable puncture device according to claim 3, characterized in that, The handle includes a U-shaped base, an inverted U-shaped elastic locking piece, and a downward-facing handle cap. The upper side of the anti-loosening end cap has a U-shaped base, and the lower center of the U-shaped base has a downward-facing pinhole. The upper end of the tamper-evident core is fixedly installed inside the pinhole. A positioning ring is fixedly installed on the outer side of the upper end of the U-shaped base, and the upper end of the positioning ring is fixedly installed together with the inner side of the upper center of the handle cap. The lower end of the handle cap abuts against the upper side of the lower end of the U-shaped base. The lower left and lower right sides of the lower end of the U-shaped base each have a first through hole extending vertically. Corresponding to each first through hole, the anti-loosening end cap has a second through hole extending both internally and externally. A fitting is fixedly installed on the outer side of the positioning ring. The inverted U-shaped elastic locking piece inside the handheld cap has its lower end passing through the corresponding first and second through holes from top to bottom and then bending outward to form a hook. The hook can hook onto the inner wall of the top of the anti-slip cap. The left side of the handheld cap has a downward-facing and through-hole left pressing notch. Inside the left pressing notch is a left pressing block whose right end is fixedly installed with the corresponding position on the left side of the inverted U-shaped elastic locking piece. The right side of the handheld cap, corresponding to the position of the left pressing notch, has a downward-facing and through-hole right pressing notch. Inside the right pressing notch is a right pressing block whose left end is fixedly installed with the corresponding position on the right side of the inverted U-shaped elastic locking piece. Or / and, the upper middle part of the stamp card head is provided with an upward-opening sealing ring groove, the sealing ring groove is provided with a downward-opening lower sealing cap, the lower sealing cap is provided with a first sealing hole that runs through the top and bottom in the middle, and the lower sealing cap includes a left half sealing cap and a right half sealing cap with opposite openings. Or / and, the inner side of the inner wall of the anti-detachment end cap is provided with a sealing ring platform that can be fitted onto the outer side of the stamping core. An upper sealing cap with an upward opening is fitted onto the outer side of the sealing ring platform. A second sealing hole with vertical penetration is provided in the middle of the upper sealing cap. The lower end of the upper sealing cap abuts against the upper side of the stamping head. A sealing pressure ring is fixedly installed on the outer side of the middle of the upper sealing cap.

8. The detachable puncture device according to claim 4, characterized in that, The handle includes a U-shaped base, an inverted U-shaped elastic locking piece, and a downward-facing handle cap. The upper side of the anti-loosening end cap has a U-shaped base, and the lower center of the U-shaped base has a downward-facing pinhole. The upper end of the tamper-evident core is fixedly installed inside the pinhole. A positioning ring is fixedly installed on the outer side of the upper end of the U-shaped base, and the upper end of the positioning ring is fixedly installed together with the inner side of the upper center of the handle cap. The lower end of the handle cap abuts against the upper side of the lower end of the U-shaped base. The lower left and lower right sides of the lower end of the U-shaped base each have a first through hole extending vertically. Corresponding to each first through hole, the anti-loosening end cap has a second through hole extending both internally and externally. A fitting is fixedly installed on the outer side of the positioning ring. The inverted U-shaped elastic locking piece inside the handheld cap has its lower end passing through the corresponding first and second through holes from top to bottom and then bending outward to form a hook. The hook can hook onto the inner wall of the top of the anti-slip cap. The left side of the handheld cap has a downward-facing and through-hole left pressing notch. Inside the left pressing notch is a left pressing block whose right end is fixedly installed with the corresponding position on the left side of the inverted U-shaped elastic locking piece. The right side of the handheld cap, corresponding to the position of the left pressing notch, has a downward-facing and through-hole right pressing notch. Inside the right pressing notch is a right pressing block whose left end is fixedly installed with the corresponding position on the right side of the inverted U-shaped elastic locking piece. Or / and, the upper middle part of the stamp card head is provided with an upward-opening sealing ring groove, the sealing ring groove is provided with a downward-opening lower sealing cap, the lower sealing cap is provided with a first sealing hole that runs through the top and bottom in the middle, and the lower sealing cap includes a left half sealing cap and a right half sealing cap with opposite openings. Or / and, the inner side of the inner wall of the anti-detachment end cap is provided with a sealing ring platform that can be fitted onto the outer side of the stamping core. An upper sealing cap with an upward opening is fitted onto the outer side of the sealing ring platform. A second sealing hole that runs vertically through the middle of the upper sealing cap is provided. The lower end of the upper sealing cap abuts against the upper side of the stamping head. A sealing pressure ring is fixedly installed on the outer side of the middle of the upper sealing cap. A second sealing hole that runs vertically through the middle of the upper sealing cap is provided.

9. The detachable puncture device according to claim 1, 2, 5, 7, or 8, characterized in that, The left half clamp head corresponding to the upper left position of the left half sleeve has a left limiting hole with an opening to the right. A left limiting post with its right end fixedly installed in the left limiting hole is fixedly installed together with the corresponding position on the left side of the left half sleeve. The right half clamp head corresponding to the upper position of the right half sleeve has a right limiting hole with an opening to the left. A right limiting post with its left end fixedly installed together with the corresponding position on the right side of the right half sleeve is fixedly installed in the right limiting hole.

10. A medical device, characterized in that, Includes the detachable puncture card device as described in any one of claims 1 to 9.

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