Puncture suturing device and method of use thereof

Abstract

The present application relates to the technical field of medical devices, in particular to a puncture suture device and a method for using the same. The puncture suture device comprises a puncture cannula, which is detachably fixedly connected with any one of a fascia assembly and a gas blocking valve assembly; an axial end of the puncture cannula is provided with a fixing boss; a plurality of notches are formed in the fixing boss along the axial direction; any one of the fascia assembly and the gas blocking valve assembly is provided with a fixing groove at an end close to the puncture cannula, the fixing groove is in a socket connection with the fixing boss; an inner side circumferential wall of the fixing groove is provided with a plurality of protrusions corresponding to the notches; in the assembly process, the protrusions are screwed and clamped with the fixing boss via the notches. The puncture suture device provided by the present application enables a surgeon to perform fascia suture without pulling out the puncture cannula after completing puncture at a specified position of an abdominal wall, thereby avoiding the risk of secondary damage to a wound of a patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a puncture and suturing device and its method of use. Background Technology

[0002] Laparoscopic surgery is a newly developed minimally invasive surgical method. Compared with traditional surgery, it has the advantages of smaller incisions, faster recovery, and less pain, and is an inevitable trend in the future development of surgical methods. During laparoscopic surgery, a puncture channel with a diameter of 5mm to 15mm needs to be established to penetrate the abdominal wall tissue, allowing surgical instruments to enter the abdominal cavity through these puncture channels.

[0003] An abdominal wall trocar is the channel through which laparoscopic surgical instruments enter the abdominal cavity from outside the body. Surgical instruments are manipulated outside the abdominal cavity, and the trocar is used to explore diseased tissue, perform electrocoagulation, hemostasis, tissue dissection, and incision. After the surgery, a "well"-shaped defect is created in the abdominal wall. This myofascial defect is a significant cause of complications such as trocar site infection and incisional hernia after laparoscopic surgery. Therefore, to minimize the risk of these complications, the surgery is usually completed with a fascia suture device to close the tissue and perform percutaneous suturing.

[0004] However, the aforementioned laparoscopic surgical procedure requires switching between the abdominal wall trocar channel and the fascia suture device. The process of removing the trocar channel and re-inserting the closure device carries a risk of secondary wound damage to the patient. Therefore, there is an urgent need for a trocar that allows fascia suturing without removing the trocar channel, thus avoiding the risk of secondary wound damage. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the existing laparoscopic surgery process, which requires switching between the abdominal wall trocar channel and the fascia suture device, and the risk of secondary damage to the patient's wound is easily caused during the process of pulling out the trocar channel and re-inserting the closure device. Thus, a trocar suture device and its method of use are provided that can perform fascia suturing without pulling out the trocar channel, thereby avoiding the risk of secondary damage to the patient's wound.

[0006] To solve the above-mentioned technical problems, the present invention provides a puncture and suturing device, comprising:

[0007] The puncture cannula is detachably and securely connected to either the fascia assembly or the air valve assembly.

[0008] The puncture cannula has a fixed boss at one axial end, which surrounds the outer peripheral wall of the puncture cannula; the fixed boss is formed with several notches along the axial direction.

[0009] Each of the fascia assembly and the air-blocking valve assembly has a fixing groove at one end near the puncture cannula, and the fixing groove is connected to the fixing boss. The inner peripheral wall of the fixing groove is provided with a plurality of protrusions corresponding to the notch. During assembly, the protrusions are screwed and engaged with the fixing boss through the notch.

[0010] Optionally, a sealing ring is provided between either the fascia assembly or the air-blocking valve assembly and the puncture cannula, so as to achieve self-locking through the elastic force of the sealing ring during the engagement and locking of the protrusion and the fixed boss.

[0011] Optionally, the fascia assembly includes:

[0012] The fascia body is screwed and snapped into the puncture cannula; the fascia body has an axially formed installation cavity, suitable for installing a connecting rod and a handle; the fascia body has two staggered needle grooves, suitable for inserting fascia needles;

[0013] One end of the connecting rod is axially fixed to the handle, and the other end is connected to the fascia wing; the fascia wings are arranged in pairs; the connecting rod moves axially relative to the fascia body under the drive of the handle, so as to drive the fascia wings to switch between an expanded state and a retracted state.

[0014] Optionally, the fascia wing is provided with a suture block. When the fascia wing is in the unfolded state, the fascia needle drives the suture to pierce the suture block and then pulls it out, so that the suture is detached from the fascia needle and remains in the suture block.

[0015] Optionally, the fascia body has a first connecting post at one end along the axial direction near the fascia wing, and the fascia wing has a hinge hole that is hinged to the first connecting post; the connecting rod has a second connecting post at one end along the axial direction near the fascia wing, and the fascia wing has a sliding groove corresponding to the second connecting post, and the second connecting post is slidably disposed in the sliding groove to drive the fascia wing to switch between an expanded state and a retracted state with the first connecting post as the rotation axis.

[0016] Optionally, the handle is provided with one or more self-locking grooves, and the inner wall of the mounting cavity is provided with protrusions corresponding to the self-locking grooves. The self-locking grooves and the protrusions form a self-locking structure to maintain the fascia wings in an expanded or retracted state.

[0017] Optionally, the self-locking groove includes a sliding switching section arranged along the axial direction and a first locking section and a second locking section at both ends of the axial direction. The first locking section is located at one end of the sliding switching section along the axial direction close to the fascia wing. When the protrusion is locked at the first locking section, the fascia wing remains in the unfolded state. When the protrusion is locked at the second locking section, the fascia wing remains in the retracted state.

[0018] Optionally, the puncture cannula has two opposing slots on its sidewall, which are adapted for the operation of the fascia assembly.

[0019] Optionally, the puncture and suturing device further includes a sheath cap assembly connected to the end of the air-blocking valve assembly away from the puncture cannula;

[0020] The sheath cap assembly is provided with a positioning post, and the air-blocking valve assembly is provided with a positioning hole. The positioning post is inserted into the positioning hole to orient the sheath cap assembly and the air-blocking valve assembly circumferentially.

[0021] The sheath cap assembly is provided with a fixing groove, and the air-stop valve assembly is provided with a fixing buckle. The fixing buckle engages with the fixing groove to axially fix the sheath cap assembly and the air-stop valve assembly.

[0022] Optionally, a sealing boss is further provided on the side of the sheath cap assembly near the air-stop valve assembly. The air-stop valve assembly includes an air-stop valve body. The sealing boss is adapted to compress and seal the air-stop valve body during the axial fixing of the sheath cap assembly and the air-stop valve assembly.

[0023] The method of using the puncture and suturing device provided by the present invention includes the following steps:

[0024] S1. Screw the air-blocking valve assembly and the puncture cannula until they cannot be rotated, so as to self-lock by the elasticity of the sealing ring;

[0025] S2. Puncture at a designated location on the abdominal wall using a trocar;

[0026] S3. Keep the puncture cannula in the designated position on the abdominal wall. First, unscrew the gas valve assembly from the puncture cannula, and then screw the fascia assembly onto the puncture cannula until it cannot be rotated, so as to self-lock by the elasticity of the sealing ring.

[0027] S4. The puncture hole is sutured using a fascia assembly.

[0028] Optionally, step S4 includes:

[0029] Rotate the handle in the first direction until it can no longer be rotated, so that the protrusion disengages from the second locking section and enters the sliding switching section. Pull the handle outward axially until it can no longer be pulled, then rotate it in the second direction until it can no longer be rotated, so that the protrusion enters the first locking section from the sliding switching section and forms a self-locking mechanism, so that the fascia wings switch from the contracted state to the expanded state.

[0030] The suture is pierced through the suture block by the fascia needle and then pulled out, so that the suture is detached from the fascia needle and left in the suture block.

[0031] Switch the fascia wings from the extended state to the retracted state, pull the puncture cannula along with the fascia assembly out from the designated position on the abdominal wall, and complete the knotting.

[0032] The technical solution of this invention has the following advantages:

[0033] 1. The puncture and suturing device provided by the present invention includes a fixing boss at one axial end of the puncture cannula, the fixing boss having several notches formed along the axial direction; a fixing groove is provided at one end of either the fascia assembly or the air-blocking valve assembly near the puncture cannula, the inner peripheral wall of the fixing groove having several protrusions corresponding to the notches; during assembly, the protrusions are screwed and engaged with the fixing boss via the notches, thereby achieving a detachable fixed connection between the puncture cannula and either the fascia assembly or the air-blocking valve assembly, allowing the surgeon to perform fascia suturing without removing the puncture cannula after puncturing at a designated location on the abdominal wall, avoiding the risk of secondary damage to the patient's wound.

[0034] 2. The puncture and suturing device provided by the present invention includes a sealing ring between either the fascia assembly or the air-blocking valve assembly and the puncture cannula. The sealing ring is made of an elastic material. During the process of the protrusion engaging with the fixed boss, the fascia assembly or the air-blocking valve assembly and the puncture cannula jointly compress the sealing ring to form a sealing structure and prevent air leakage during puncture. Simultaneously, by providing the sealing ring, when the first target side abuts against the second target side, the fascia assembly is rotated until it can no longer rotate relative to the puncture cannula, thereby achieving self-locking through the elasticity of the sealing ring.

[0035] 3. The puncture and suturing device provided by the present invention includes a positioning post on the sheath cap assembly and a positioning hole on the air-blocking valve assembly. The positioning post engages with the positioning hole to achieve circumferential orientation between the sheath cap assembly and the air-blocking valve assembly. A fixing groove is provided on the sheath cap assembly, and a fixing buckle is provided on the air-blocking valve assembly. The fixing buckle engages with the fixing groove to achieve axial fixation between the sheath cap assembly and the air-blocking valve assembly. This enables a detachable connection between the sheath cap assembly and the air-blocking valve assembly, allowing the sheath cap assembly, the air-blocking valve assembly, and the puncture cannula to be separated, avoiding obstruction by the air-blocking valve and facilitating better postoperative sampling.

[0036] 4. The method of using the puncture and suturing device provided by the present invention includes: screwing the air-blocking valve assembly and the puncture cannula until they cannot be rotated, so as to achieve self-locking through the elasticity of the sealing ring; performing puncture at a designated position on the abdominal wall through the puncture cannula; keeping the puncture cannula stationary at the designated position on the abdominal wall, first unscrewing the air-blocking valve assembly from the puncture cannula, and then screwing the fascia assembly and the puncture cannula until they cannot be rotated, so as to achieve self-locking through the elasticity of the sealing ring; suturing the puncture hole through the fascia assembly. By performing laparoscopic surgery using the above method, fascia suturing can be performed without removing the puncture device channel, which can avoid the risk of secondary damage to the patient's wound.

[0037] 5. The method of using the puncture and suturing device provided by the present invention, wherein step S4 includes: rotating the handle in the first direction of rotation until it cannot be rotated, so that the protrusion disengages from the second locking section and enters the sliding switching section; pulling the handle outward axially until it cannot be pulled, and then rotating it in the second direction of rotation until it cannot be rotated, so that the protrusion enters the first locking section from the sliding switching section and forms a self-locking, thereby switching the fascia wing from the closed state to the open state; driving the suture through the needle groove to puncture the suture block and then pulling it out, so that the suture disengages from the fascia needle and remains in the suture block; switching the fascia wing from the open state to the closed state; pulling the puncture cannula together with the fascia assembly from the designated position on the abdominal wall and completing the knotting, thereby ensuring the reliability of the fascia wing in the closed or open state and enhancing the safety of suturing. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1This is an overall structural diagram of the puncture cannula and fascia assembly of the puncture and suturing device of the present invention;

[0040] Figure 2 This is a schematic diagram of the assembly of the fixing boss and fixing groove of the puncture and suturing device of the present invention;

[0041] Figure 3 This is a schematic diagram of the self-locking assembly of the puncture and suturing device of the present invention via a sealing ring;

[0042] Figure 4 This is a top view of the fixing boss of the puncture and suturing device of the present invention;

[0043] Figure 5 This is a top view of the fixing groove structure of the puncture and suturing device of the present invention;

[0044] Figure 6 This is an overall structural diagram of the fascia assembly of the puncture and suturing device of the present invention;

[0045] Figure 7 This is a cross-sectional view of the fascia body of the fascia assembly of the puncture and suturing device of the present invention;

[0046] Figure 8 This is an overall structural diagram of the connecting rod of the fascia assembly in the puncture and suturing device of the present invention;

[0047] Figure 9 This is an overall structural diagram of the handle of the fascia component of the puncture and suturing device of the present invention;

[0048] Figure 10 This is a diagram showing the connection between the fascial needle and the suture line in the fascial component of the puncture and suturing device of the present invention.

[0049] Figure 11 for Figure 10 Enlarged view of point P in the middle;

[0050] Figure 12 This is an overall structural diagram of the fascial wing of the fascial component of the puncture and suturing device of the present invention;

[0051] Figure 13 This is a schematic diagram showing the connection between the connecting rod, handle, and fascia wing of the puncture and suturing device of the present invention;

[0052] Figure 14 This is an exploded view of the puncture cannula and fascia assembly of the puncture and suturing device of the present invention.

[0053] Figure 15 This is an exploded structural diagram of the puncture cannula, the air-blocking valve assembly, and the sheath cap assembly of the puncture and suturing device of the present invention.

[0054] Figure 16 This is a cross-sectional view of the air-blocking valve assembly of the puncture and suturing device of the present invention.

[0055] Figure 17 This is a top view of the air-blocking valve assembly of the puncture and suturing device of the present invention;

[0056] Figure 18 This is a side view of the sheath cap assembly of the puncture and suturing device of the present invention.

[0057] Explanation of reference numerals in the attached figures:

[0058] 10. Puncture cannula; 101. Fixing boss; 1011. Side of first target; 102. Notch; 103. Groove; 11. Sealing ring; 12. Injection valve; 13. Injection switch;

[0059] 20. Fascia assembly; 201. Fixing groove; 202. Protrusion; 2021. Second target side; 21. Fascia body; 211. Mounting cavity; 212. Needle groove; 213. First connecting post; 214. Protrusion; 22. Connecting rod; 221. Second connecting post; 23. Handle; 230. Self-locking groove; 2301. First locking section; 2302. Second locking section; 2303. Sliding switching section; 24. Fascia needle; 241. Suture opening; 25. Fascia wing; 251. Hinge hole; 252. Sliding groove; 26. Suture block; 27. Suture thread;

[0060] 30. Airlock valve assembly; 301. Positioning hole; 302. Fixing buckle; 31. Airlock valve body; 32. Airlock valve upper cover; 33. Airlock valve lower cover;

[0061] 40. Sheath cap assembly; 401. Positioning post; 402. Fixing groove; 403. Sealing boss; 41. Sealing top cover; 42. Valve fixing top cover; 43. Transparent valve; 44. Self-adjusting sealing cap; 45. Valve fixing bottom cover; 46. Sealing bottom cover. Detailed Implementation

[0062] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0066] Example 1

[0067] Combination Figures 1-18 As shown, the puncture and suturing device provided in this embodiment includes:

[0068] The puncture cannula 10 is detachably and fixedly connected to either the fascia assembly 20 or the air valve assembly 30.

[0069] A fixing boss 101 is provided at one axial end of the puncture cannula 10, and the fixing boss 101 is arranged around the outer peripheral wall of the puncture cannula 10; the fixing boss 101 is formed with several notches 102 along the axial direction.

[0070] Each of the fascia assembly 20 and the air-blocking valve assembly 30 has a fixing groove 201 at one end near the puncture cannula 10, and the fixing groove 201 is inserted and connected to the fixing boss 101; the inner peripheral wall of the fixing groove 201 is provided with a plurality of protrusions 202 corresponding to the notch 102; during assembly, the protrusions 202 are screwed and engaged with the fixing boss 101 via the notch 102.

[0071] It should be noted that the puncture cannula 10 of the puncture and suturing device of the present invention can be adapted to either the air-blocking valve assembly 30 or the fascia assembly 20. When the puncture cannula 10 is detachably and fixedly connected to the air-blocking valve assembly 30, the surgeon can perform puncture operations at a designated location on the abdominal wall. When the puncture cannula 10 is detachably and fixedly connected to the fascia assembly 20, the surgeon can perform suturing operations at a designated location on the abdominal wall. Therefore, during laparoscopic surgery, after the puncture cannula 10 completes puncture at a designated location on the abdominal wall, the puncture cannula 10 is kept stationary at the designated location on the abdominal wall. The air-blocking valve assembly 30 is first unscrewed from the puncture cannula 10, and then the fascia assembly 20 is fixedly connected to the puncture cannula 10 and sutured. This allows the surgeon to perform fascia suturing without removing the puncture cannula 10, avoiding the risk of secondary damage to the patient's wound.

[0072] It should be noted that, please refer to Figure 2 As shown, the puncture cannula 10 has a fixing boss 101 at one end axially near the fascia assembly 20. The fixing boss 101 is circumferentially disposed on the outer peripheral wall of the puncture cannula 10, and the fixing boss 101 protrudes radially from the outer peripheral wall of the puncture cannula 10. The fixing boss 101 has several notches 102 formed axially. See also Figure 2 As shown, either the fascia assembly 20 or the air-blocking valve assembly 30 has a fixing groove 201 at one end near the puncture cannula 10, suitable for insertion and connection with the fixing boss 101; the inner peripheral wall of the fixing groove 201 has a plurality of protrusions 202 corresponding to the notch 102; please refer to Figure 3 As shown, the side of the fixed boss 101 axially away from the fascia assembly 20 is defined as the first target side surface 1011; the side of the protrusion 202 axially away from the puncture cannula 10 is defined as the second target side surface 2021. During assembly, the fixed boss 101 is inserted into the fixed groove 201, and simultaneously, the protrusion 202 moves axially through the notch 102 to the side of the fixed boss 101 close to the first target side surface 1011. The fascia assembly 20 is rotated until the first target side surface 1011 and the second target side surface 2021 abut against each other, so that the protrusion 202 and the fixed boss 101 are screwed and engaged, thereby achieving a detachable fixed connection between the fascia assembly 20 and the puncture cannula 10. The detachable fixed connection between the air valve assembly 30 and the puncture cannula 10 follows the same principle and will not be described again here.

[0073] It should be noted that, please refer to Figure 4 and Figure 5As shown, in this embodiment, the notch 102 and the protrusion 202 are arranged in a one-to-one correspondence; there are three protrusions 202, one of which is smaller than the other two, in order to prevent mistaken identity.

[0074] In this embodiment, a fixing boss 101 is provided at one axial end of the puncture cannula 10, and the fixing boss 101 is formed with several notches 102 along the axial direction; a fixing groove 201 is provided at one end of either the fascia assembly 20 or the air valve assembly 30 near the puncture cannula 10, and several protrusions 202 corresponding to the notches 102 are provided on the inner peripheral wall of the fixing groove 201; during the assembly process, the protrusions 202 are screwed and engaged with the fixing boss 101 through the notches 102, thereby realizing a detachable fixed connection between the puncture cannula 10 and any one of the fascia assembly 20 and the air valve assembly 30, so that the surgeon can perform fascial suturing without removing the puncture cannula 10 after completing the puncture at a designated position on the abdominal wall, avoiding the risk of secondary damage to the patient's wound.

[0075] Specifically, a sealing ring 11 is provided between either the fascia assembly 20 or the air valve assembly 30 and the puncture cannula 10, so that the elasticity of the sealing ring 11 can self-lock during the process of the protrusion 202 engaging and locking with the fixed protrusion 101.

[0076] It should be noted that, please refer to Figure 3 As shown, a sealing ring 11 is provided between either the fascia assembly 20 or the air-blocking valve assembly 30 and the puncture cannula 10. The sealing ring 11 can be fixedly disposed in a preset sealing groove (not shown in the figure) of the puncture cannula 10 to prevent the sealing ring 11 from falling off when the fascia assembly 20 is replaced. The sealing ring 11 is made of elastic material and can be an O-ring. During the process of the protrusion 202 engaging with the fixed protrusion 101, the fascia assembly 20 or the air-blocking valve assembly 30 and the puncture cannula 10 jointly squeeze the sealing ring 11 to form a sealing structure and prevent air leakage during puncture. At the same time, by setting the sealing ring 11, when the first target side 1011 abuts against the second target side 2021, the fascia assembly 20 is rotated until the fascia assembly 20 cannot rotate relative to the puncture cannula 10, thereby achieving self-locking through the elasticity of the sealing ring 11.

[0077] Specifically, the fascia assembly 20 includes:

[0078] The fascia body 21 is screwed and snapped into the puncture cannula 10; the fascia body 21 has an axially formed installation cavity 211, which is suitable for installing the connecting rod 22 and the handle 23; the fascia body 21 has two staggered needle grooves 212, which are suitable for inserting fascia needles 24.

[0079] One end of the connecting rod 22 is axially fixed to the handle 23, and the other end is connected to the fascia wing 25; the fascia wings 25 are arranged in pairs; the connecting rod 22 moves axially relative to the fascia body 21 under the drive of the handle 23, so as to drive the fascia wings 25 to switch between the unfolded state and the retracted state.

[0080] It should be noted that, please refer to Figures 6-13 As shown, in this embodiment, the fascia assembly 20 includes a fascia body 21, a connecting rod 22, a handle 23, a fascia needle 24, a fascia wing 25, and a suture block 26. The fascia body 21 is provided with the fixing groove 201 and the protrusion 202, and the fascia body 21 is screwed and engaged with the puncture cannula 10 via the protrusion 202; please refer to... Figure 7 As shown, the fascia body 21 has an axially formed mounting cavity 211, suitable for mounting the connecting rod 22 and the handle 23. The fascia body 21 also has two staggered needle grooves 212, suitable for inserting the fascia needles 24. (See also...) Figure 13 As shown, one axial end of the connecting rod 22 is fixed only axially to the handle 23, and the handle 23 can rotate circumferentially relative to the connecting rod 22. The other end of the connecting rod 22 is connected to the fascia wing 25. The fascia wings 25 are arranged in pairs. The connecting rod 22 moves axially relative to the fascia body 21 under the drive of the handle 23, so as to drive the fascia wings 25 to switch between the unfolded state and the retracted state.

[0081] Specifically, the fascia wing 25 is provided with a suture block 26. When the fascia wing 25 is in the unfolded state, the fascia needle 24 drives the suture to pierce the suture block 26 and then pulls it out, so that the suture is separated from the fascia needle 24 and left in the suture block 26.

[0082] It should be noted that, please refer to Figure 6 and Figure 10 As shown, a suture block 26 is fixedly disposed on the fascia wing 25. When the fascia wing 25 is in the unfolded state, the fascia needle 24 drives the suture 27 to pierce the suture block 26 and then pull it out, so that the suture 27 is detached from the fascia needle 24 and remains in the suture block 26; please refer to Figure 11As shown, the fascia needle 24 has a suture-holding port 241 at its tip. The suture-holding port 241 is adapted to hold the suture 27 at the tip of the fascia needle 24, so that the fascia needle 24 can drive the suture 27 through the needle groove 212 to pierce the suture block 26. When the fascia needle 24 is pulled out from the suture block 26, the suture 27 is released from the suture-holding port 241 and remains in the suture block 26, which facilitates the surgeon's suturing operation.

[0083] Specifically, the fascia body 21 is provided with a first connecting post 213 at one end along the axial direction near the fascia wing 25, and the fascia wing 25 is provided with a hinge hole 251 that is hinged to the first connecting post 213; the connecting rod 22 is provided with a second connecting post 221 at one end along the axial direction near the fascia wing 25, and the fascia wing 25 is provided with a sliding groove 252 corresponding to the second connecting post 221. The second connecting post 221 is slidably disposed in the sliding groove 252 so as to drive the fascia wing 25 to switch between an expanded state and a retracted state with the first connecting post 213 as the rotation axis.

[0084] It should be noted that, please refer to Figure 7 As shown, the fascia body 21 has a first connecting post 213 at one end along the axial direction near the fascia wing 25. Please refer to [link / reference]. Figure 12 As shown, the fascia wing 25 has a hinge hole 251 that is hinged to the first connecting post 213; please refer to Figure 8 As shown, a second connecting post 221 is provided at one end of the connecting rod 22 near the fascia wing 25 along the axial direction. See also... Figure 12 As shown, the fascia wing 25 has a sliding groove 252 corresponding to the second connecting post 221, and the second connecting post 221 is slidably disposed within the sliding groove 252; please refer to Figure 6 and Figure 13 As shown, in the specific implementation process, the handle 23 drives the connecting rod 22 to move axially, so that the connecting rod 22 drives the fascia wing 25 to switch between the unfolded state and the retracted state with the first connecting column 213 as the rotation axis, which facilitates the surgeon's suturing operation.

[0085] Specifically, the handle 23 is provided with one or more self-locking grooves 230, and the inner sidewall of the mounting cavity 211 is provided with protrusions 214 corresponding to the self-locking grooves 230. The self-locking grooves 230 and the protrusions 214 form a self-locking structure to maintain the fascia wings 25 in an expanded or retracted state.

[0086] It should be noted that, please refer to Figure 13As shown, the handle 23 has one or more self-locking grooves 230. In this embodiment, since the size of the protrusion 214 is small, the self-locking strength is low. Therefore, the handle 23 has multiple self-locking grooves 230 to enhance the self-locking strength. The protrusion 214 engages with the self-locking groove 230 to form a self-locking structure, thereby maintaining the fascia wing 25 in an expanded or retracted state.

[0087] Specifically, the self-locking groove 230 includes a sliding switching section 2303 arranged along the axial direction and a first locking section 2301 and a second locking section 2302 at both ends of the axial direction. The first locking section 2301 is located at one end of the sliding switching section 2303 along the axial direction close to the fascia wing 25. When the protrusion 214 is locked to the first locking section 2301, the fascia wing 25 remains in the unfolded state. When the protrusion 214 is locked to the second locking section 2302, the fascia wing 25 remains in the retracted state.

[0088] It should be noted that, please refer to Figure 9 As shown, the self-locking groove 230 includes a sliding switching section 2303 arranged axially and a first locking section 2301 and a second locking section 2302 at both ends of its axial direction. The first locking section 2301 is located at one end of the sliding switching section 2303 axially close to the fascia wing 25; simultaneously combined with Figure 7 and Figure 13 As shown, during the specific operation, when the handle 23 is rotated in the reverse direction, pulled, and rotated in the forward direction so that the protrusion 214 is locked at the first locking segment 2301, the fascia wing 25 remains in the unfolded state; when the handle 23 is rotated in the reverse direction, pushed, and rotated in the forward direction again so that the protrusion 214 is locked at the second locking segment 2302, the fascia wing 25 remains in the retracted state, which helps to ensure the stability of the fascia wing 25 during the operation.

[0089] Specifically, the puncture cannula 10 has two oppositely arranged slots 103 on its side peripheral wall, and the slots 103 are adapted to the operation of the fascia assembly 20.

[0090] Please see Figure 1 and Figure 6 As shown, two oppositely arranged slots 103 are provided on the side peripheral wall of the puncture cannula 10. The slots 103 are suitable for the operation of the fascia assembly 20. In the specific implementation process, the fascia wing 25 unfolds through the slots 103, and the fascia needle 24 pierces the suture block 26 through the slots 103 via the needle groove 212.

[0091] Specifically, the puncture and suturing device further includes a sheath cap assembly 40, which is connected to the end of the air valve assembly 30 away from the puncture cannula 10;

[0092] The sheath cap assembly 40 is provided with a positioning post 401, and the air-blocking valve assembly 30 is provided with a positioning hole 301. The positioning post 401 is inserted into the positioning hole 301 to orient the sheath cap assembly 40 and the air-blocking valve assembly 30 circumferentially.

[0093] The sheath cap assembly 40 is provided with a fixing groove 402, and the air valve assembly 30 is provided with a fixing buckle 302. The fixing buckle 302 engages with the fixing groove 402 to axially fix the sheath cap assembly 40 and the air valve assembly 30.

[0094] It should be noted that, please refer to Figure 15 As shown, in a specific implementation, the sheath cap assembly 40 includes a sealing upper cover 41, a valve fixing upper cover 42, a transparent valve 43, a self-adjusting sealing cap 44, a valve fixing lower cover 45, and a sealing lower cover 46. The specific assembly relationship is not detailed here. The sealing upper cover 41 and the sealing lower cover 46 are connected by ultrasonic welding to form a connection between the sealing upper cover 41, the valve fixing upper cover 42, the transparent valve 43, the self-adjusting sealing cap 44, the valve fixing lower cover 45, and the sealing lower cover 46. Figure 18 The sheath cap assembly 40 is shown. Please refer to [link / reference]. Figure 15 As shown, the airlock valve assembly 30 includes an airlock valve body 31, an upper airlock valve cover 32, and a lower airlock valve cover 33. The airlock valve body 31 is disposed between the upper airlock valve cover 32 and the lower airlock valve cover 33. The upper airlock valve cover 32 and the lower airlock valve cover 33 are connected by ultrasonic welding to form a structure as shown. Figure 16 The airlock valve assembly 30 is shown. See also... Figure 15 As shown, the puncture cannula 10 is also provided with an air injection valve 12 and an air injection switch 13. The air injection valve 12 is ultrasonically welded to the puncture cannula 10.

[0095] Optionally, the positioning post 401 is disposed on the sealing lower cover 46, and the sealing lower cover 46 is located at one end of the sheath cap assembly 40 axially close to the air-stopping valve assembly 30; the positioning hole 301 is opened on the air-stopping valve upper cover 32, and the air-stopping valve upper cover 32 is located at one end of the air-stopping valve assembly 30 axially close to the sheath cap assembly 40.

[0096] Optionally, the fixing groove 402 is disposed on the sealing cover 41, and the sealing cover 41 is located at one end of the sheath cap assembly 40 axially away from the air-stopping valve assembly 30; the fixing buckle 302 is disposed on the air-stopping valve cover 32 and / or the fixing buckle 302 and the air-stopping valve cover 32 are integrally formed.

[0097] In this embodiment, the sheath cap assembly 40 is provided with a positioning post 401, and the air-blocking valve assembly 30 is provided with a positioning hole 301. The positioning post 401 cooperates with the positioning hole 301 to achieve circumferential orientation between the sheath cap assembly 40 and the air-blocking valve assembly 30. The sheath cap assembly 40 is provided with a fixing groove 402, and the air-blocking valve assembly 30 is provided with a fixing buckle 302. The fixing buckle 302 engages with the fixing groove 402 to achieve axial fixation between the sheath cap assembly 40 and the air-blocking valve assembly 30. This enables a detachable connection between the sheath cap assembly 40 and the air-blocking valve assembly 30, allowing the sheath cap assembly 40, the air-blocking valve assembly 30, and the puncture cannula 10 to be separated, avoiding obstruction by the air-blocking valve and facilitating better sampling after surgery.

[0098] Specifically, a sealing boss 403 is provided on the side of the sheath cap assembly 40 near the air-stop valve assembly 30. The air-stop valve assembly 30 includes an air-stop valve body 31. The sealing boss 403 is adapted to squeeze and seal the air-stop valve body 31 during the process of axially fixing the sheath cap assembly 40 and the air-stop valve assembly 30.

[0099] It should be noted that, please refer to Figure 18 As shown, a sealing boss 403 is also provided on the side of the sheath cap assembly 40 near the gas-stopping valve assembly 30. During the process of axially fixing the sheath cap assembly 40 and the gas-stopping valve assembly 30, the sealing boss 403 squeezes the gas-stopping valve body 31 to form a sealing effect, thereby preventing gas from leaking out from the connection seam between the sheath cap assembly 40 and the gas-stopping valve assembly 30.

[0100] Example 2

[0101] The method of using the puncture and suturing device provided in this embodiment includes the following steps:

[0102] S1. Screw the air-blocking valve assembly 30 and the puncture cannula 10 until they cannot be rotated, so as to achieve self-locking by the elastic force of the sealing ring 11.

[0103] S2. Perform puncture at the designated location on the abdominal wall using the puncture cannula 10;

[0104] S3. Keep the puncture cannula 10 in the designated position on the abdominal wall. First, unscrew the air valve assembly 30 from the puncture cannula 10, and then screw the fascia assembly 20 onto the puncture cannula 10 until it cannot be rotated, so as to achieve self-locking through the elasticity of the sealing ring 11.

[0105] S4. The puncture hole is sutured using the fascia assembly 20.

[0106] In this embodiment, the method of using the puncture and suturing device includes: screwing the air-blocking valve assembly 30 and the puncture cannula 10 together until they cannot be rotated, so as to achieve self-locking through the elasticity of the sealing ring 11; puncturing at a designated position on the abdominal wall through the puncture cannula 10; keeping the puncture cannula 10 stationary at the designated position on the abdominal wall, first unscrewing the air-blocking valve assembly 30 from the puncture cannula 10, and then screwing the fascia assembly 20 and the puncture cannula 10 together until they cannot be rotated, so as to achieve self-locking through the elasticity of the sealing ring 11; suturing the puncture hole through the fascia assembly 20. By performing laparoscopic surgery using the above method, fascia suturing can be performed without removing the puncture device channel, which can avoid the risk of secondary damage to the patient's wound.

[0107] Specifically, step S4 includes:

[0108] Rotate the handle 23 along the first direction of rotation until it cannot be rotated, so that the protrusion 214 disengages from the second locking section 2302 and enters the sliding switching section 2303. Pull the handle 23 outward axially until it cannot be pulled, and then rotate it along the second direction of rotation until it cannot be rotated, so that the protrusion 214 enters the first locking section 2301 from the sliding switching section 2303 and forms a self-locking, so that the fascia wing 25 switches from the contracted state to the unfolded state.

[0109] The suture is driven by the fascia needle 24 to pierce the suture block 26 through the needle groove 212 and then pulled out, so that the suture is detached from the fascia needle 24 and left in the suture block 26.

[0110] Switch the fascia wing 25 from the extended state to the retracted state, and pull the puncture cannula 10 together with the fascia assembly 20 out from the designated position on the abdominal wall to complete the knotting.

[0111] It should be noted that the first rotation direction refers to Figure 1 The direction indicated by R1, the second direction of rotation refers to Figure 1 The direction indicated by R2.

[0112] In this embodiment, step S4 includes: rotating the handle 23 in the first direction of rotation until it cannot be rotated, so that the protrusion 214 disengages from the second locking section 2302 and enters the sliding switching section 2303; pulling the rotating handle 23 outward axially until it cannot be pulled, and then rotating it in the second direction of rotation until it cannot be rotated, so that the protrusion 214 enters the first locking section 2301 from the sliding switching section 2303 and forms a self-locking, so that the fascia wing 25 switches from the closed state to the open state; the suture is driven by the fascia needle 24 to pierce the suture block 26 through the needle groove 212 and then pulled out, so that the suture is detached from the fascia needle 24 and left in the suture block 26; the fascia wing 25 is switched from the open state to the closed state, and the puncture cannula 10 together with the fascia assembly 20 is pulled out from the designated position on the abdominal wall and the knot is tied, thereby ensuring the reliability of the fascia wing 25 in the closed state or the open state and enhancing the safety of suturing.

[0113] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A puncture and suture device, characterized in that, include: The puncture cannula (10) is detachably and fixedly connected to either the fascia assembly (20) or the air valve assembly (30); The puncture cannula (10) has a fixed boss (101) at one axial end, and the fixed boss (101) is arranged around the outer peripheral wall of the puncture cannula (10); the fixed boss (101) is formed with several notches (102) along the axial direction. Each of the fascia assembly (20) and the air valve assembly (30) has a fixing groove (201) at one end near the puncture cannula (10), and the fixing groove (201) is connected to the fixing boss (101) by insertion; the inner peripheral wall of the fixing groove (201) is provided with a plurality of protrusions (202) corresponding to the notch (102); during the assembly process, the protrusions (202) are screwed and engaged with the fixing boss (101) through the notch (102); The notch (102) and the protrusion (202) are provided in a one-to-one correspondence; there are three protrusions (202), one of which is smaller than the other two, in order to prevent mistaken identity; The fascia assembly (20) includes: The fascia body (21) is screwed and snapped into the puncture cannula (10); the fascia body (21) has an axially provided installation cavity (211) suitable for installing the connecting rod (22) and the handle (23); the fascia body (21) has two staggered needle grooves (212) suitable for inserting fascia needles (24). One end of the connecting rod (22) is axially fixed to the handle (23), and the other end is connected to the fascia wing (25); the fascia wings (25) are arranged in pairs; the connecting rod (22) moves axially relative to the fascia body (21) under the drive of the handle (23) so as to drive the fascia wings (25) to switch between the unfolded state and the retracted state. The handle (23) is provided with one or more self-locking grooves (230), and the inner wall of the mounting cavity (211) is provided with protrusions (214) corresponding to the self-locking grooves (230). The self-locking grooves (230) and the protrusions (214) form a self-locking structure to maintain the fascia wings (25) in an expanded or retracted state. The self-locking groove (230) includes a sliding switching section (2303) arranged along the axial direction and a first locking section (2301) and a second locking section (2302) at both ends of the axial direction. The first locking section (2301) is located at one end of the sliding switching section (2303) along the axial direction close to the fascia wing (25). When the protrusion (214) is locked at the first locking section (2301), the fascia wing (25) remains in the unfolded state. When the protrusion (214) is locked at the second locking section (2302), the fascia wing (25) remains in the retracted state.

2. The puncture and suturing device according to claim 1, characterized in that, A sealing ring (11) is provided between either the fascia assembly (20) or the air valve assembly (30) and the puncture cannula (10) to self-lock by the elastic force of the sealing ring (11) during the engagement of the protrusion (202) and the fixed boss (101).

3. The puncture and suturing device according to claim 1, characterized in that, The fascia wing (25) is provided with a suture block (26). When the fascia wing (25) is in the unfolded state, the fascia needle (24) drives the suture to pierce the suture block (26) and then pull it out, so that the suture is separated from the fascia needle (24) and left in the suture block (26).

4. The puncture and suturing device according to claim 1, characterized in that, The fascia body (21) is provided with a first connecting post (213) at one end along the axial direction close to the fascia wing (25), and the fascia wing (25) is provided with a hinge hole (251) that is hinged to the first connecting post (213). The connecting rod (22) is provided with a second connecting post (221) at one end of the fascia wing (25) along the axial direction. The fascia wing (25) is provided with a sliding groove (252) corresponding to the second connecting post (221). The second connecting post (221) is slidably disposed in the sliding groove (252) so as to drive the fascia wing (25) to switch between the unfolded state and the retracted state with the first connecting post (213) as the rotation axis.

5. The puncture and suturing device according to any one of claims 1-4, characterized in that, The puncture cannula (10) has two oppositely arranged slots (103) on its side wall, which are adapted to the operation of the fascia assembly (20).

6. The puncture and suturing device according to any one of claims 1-4, characterized in that, It also includes a sheath cap assembly (40) connected to the end of the gas valve assembly (30) away from the puncture cannula (10); The sheath cap assembly (40) is provided with a positioning post (401), and the air valve assembly (30) is provided with a positioning hole (301). The positioning post (401) is inserted into the positioning hole (301) to orient the sheath cap assembly (40) and the air valve assembly (30) circumferentially. The sheath cap assembly (40) is provided with a fixing groove (402), and the air valve assembly (30) is provided with a fixing buckle (302). The fixing buckle (302) engages with the fixing groove (402) to axially fix the sheath cap assembly (40) and the air valve assembly (30).

7. The puncture and suturing device according to claim 6, characterized in that, A sealing boss (403) is also provided on the side of the sheath cap assembly (40) near the air-stop valve assembly (30). The air-stop valve assembly (30) includes an air-stop valve body (31). The sealing boss (403) is adapted to squeeze and seal the air-stop valve body (31) during the process of axially fixing the sheath cap assembly (40) and the air-stop valve assembly (30).

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