Suture and puncture devices for surgical procedures

Abstract

The application discloses a suture device and a puncture device for surgical operation. The suture device comprises a handle part, a core rod assembly, a driving rod, and a thread releasing part. The core rod assembly is connected to the handle part at a proximal end and is used to pass through a puncture hole at a distal end. The driving rod is arranged in the core rod assembly. The thread releasing part is arranged in the core rod assembly and at least partially covers a needle retaining opening. A suture assembly is used to suture the puncture hole and comprises a suture needle and a suture thread. The suture needle is provided with a suture thread limiting groove. At least a part of a thread end of the suture thread is accommodated in the suture thread limiting groove. The thread end is provided with a limiting structure to limit and stop the thread end from the suture needle. The driving rod is drivingly connected to the suture needle. The suture needle drives the suture thread to pass through the needle retaining opening and the thread releasing part. When the suture needle exits the needle retaining opening, the thread releasing part and the limiting structure limit and stop each other to make the thread end separate from the suture needle and remain in the core rod assembly. The problem that the split needle head of the suture device in the prior art is prone to falling off in the suture process is solved.

Description

Technical Field

[0001] This invention relates to the field of surgical instrument technology, and in particular to a suture and puncture device for surgical procedures. Background Technology

[0002] Currently, laparoscopic surgery is widely accepted in surgical procedures. In minimally invasive laparoscopic surgery, the surgeon typically makes a small incision in the patient's abdomen, then aligns the trocar tip with the incision and rotates it back and forth while moving the trocar downwards, allowing the core assembly to guide the trocar through the abdominal skin. The core assembly is then removed, and the abdominal cavity is inflated using the trocar cannula to establish and maintain pneumoperitoneum. Whether it's the trocar cannula used to establish and maintain pneumoperitoneum or other types of trocar cannulas, they all create a passage for instruments to enter and exit the abdominal cavity. Anastomosing devices or other surgical instruments can be inserted and removed through the trocar cannula to perform surgical procedures. After the surgery, the puncture site needs to be sutured. Existing suture devices include a suture needle and suture thread. The suture needle has a separate needle tip, and the suture thread is connected to the needle tip. The suture needle guides the suture thread through the abdominal wall tissue and into the mandrel assembly. At this point, the needle tip separates from the main body of the suture needle, leaving the suture thread end inside the mandrel assembly. After the suture needle is withdrawn, the suture thread is tightened, thus suturing the puncture site. However, the existing method of suture removal through needle tip detachment has certain risks and reliability issues. If the connection between the needle tip and the needle arm is too tight, suture removal may be impossible or difficult. Conversely, if the connection is too loose, the needle tip may easily detach, posing a risk of injury if it accidentally dislodges inside the patient. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention aims to provide a suture device and puncture device for surgical procedures, which solves the problem of poor reliability of the separate suture needles in the prior art.

[0004] This invention is achieved through the following technical solution:

[0005] A surgical suture device includes: a handle for gripping; a core assembly with a proximal end connected to the handle and a distal end for passing through a puncture hole; a drive rod disposed within the core assembly; a suture release member having a needle inlet on the core assembly and disposed within the core assembly, at least partially obscuring the needle inlet; and a suture assembly driven by the drive rod to suture the puncture hole. At least a portion of the suture assembly is disposed within the core assembly, the suture assembly including a suture needle and a suture thread. The suture needle has a suture thread limiting groove, at least a portion of the suture thread end is accommodated within the suture thread limiting groove, and the suture thread end has a limiting structure to stop the suture thread end from the suture needle. The drive rod is driven to the suture needle, which is driven to move, causing the suture needle to pass through the needle inlet and the suture release member. When the suture needle exits the needle inlet, the suture release member and the limiting structure form a limiting stop, causing the suture thread end to detach from the suture needle and remain within the core assembly.

[0006] Furthermore, the suture needle includes a suture arm and a suture needle head, the suture arm and the suture needle head are fixedly connected or integrally formed, and the suture thread limiting groove is located at the suture needle head.

[0007] Furthermore, the wire-removing component is made of a flexible, soft material.

[0008] Furthermore, the detachable parts are made of any one of silicone, TPU, or rubber.

[0009] Furthermore, the core rod assembly includes a first limiting member and a second limiting member, which are disposed at the needle outlet and are spaced apart radially along the core rod assembly. The thread-removing member extends between the first limiting member and the second limiting member and is clamped by the first limiting member and the second limiting member.

[0010] Furthermore, the wire-removing component is a spring-loaded structure, which includes two springs. One end of each spring is fixedly mounted on both sides of the needle-holding opening, and the other end of each spring is bent at a preset angle along the direction close to the central axis of the core rod assembly to form a V-shaped structure.

[0011] Furthermore, the wire-removing component is a spring-loaded structure, which includes a fixing plate and two spring-loaded pieces. The fixing plate has a strip-shaped hole extending along the length direction, and the two spring-loaded pieces are respectively fixed on both sides of the strip-shaped hole. The two spring-loaded pieces extend along the direction close to the central axis of the core rod assembly and are set at a preset angle with the fixing plate to form a V-shaped structure.

[0012] Furthermore, the limiting structure includes two limiting protrusions, which are spaced apart. The portion of the suture thread located between the two limiting protrusions is accommodated in the suture thread limiting groove. The two limiting protrusions respectively limit and stop the two sides of the suture needle tip.

[0013] Furthermore, the limiting protrusion is formed by knotting sutures or by hot-melting sutures.

[0014] Furthermore, the radial thickness of the suture groove is less than the distance between the two limiting protrusions.

[0015] Furthermore, the suture groove extends radially through the tip of the suture needle.

[0016] Furthermore, the suture needle has a semi-closed hollow area at the suture needle tip. The suture needle includes an elastic element that extends from one end of the opening of the hollow area along the length of the suture needle to the other end of the opening of the hollow area, so as to cover at least a portion of the opening of the hollow area and form a suture line limiting groove. One side of the elastic element is a groove wall of the suture line limiting groove.

[0017] Furthermore, the width of the suture groove gradually increases from the opening to the bottom.

[0018] Furthermore, the suture needle is arc-shaped, the suture suture limiting groove is arc-shaped, and the curvature of the suture suture limiting groove is adapted to the suture needle.

[0019] Furthermore, the opening width of the suture groove is smaller than the diameter of the suture; and / or the bottom width of the suture groove is larger than the diameter of the suture; and / or the depth of the suture groove is greater than the diameter of the suture.

[0020] Furthermore, the suture needle includes: a transmission rod, one end of which is driven and connected to a drive rod; and a suture arm, which is connected at an angle to the other end of the transmission rod, with the end of the suture arm away from the transmission rod being the suture needle tip.

[0021] Furthermore, the suture device also includes a suture storage structure connected to the distal end of the mandrel assembly, the suture storage structure being used to accommodate at least a portion of the suture.

[0022] The present invention also provides a puncture device, comprising: the above-described suture for surgical procedures; a cannula assembly; and the suture extending into the cannula assembly.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: By opening a suture limiting groove on the suture needle, at least a portion of the suture end is accommodated in the suture limiting groove, and a limiting structure is provided at the suture end to stop the suture end from the suture needle. Then, a suture release device is provided at the needle retention port of the core rod assembly. The suture needle drives the suture through the needle retention port into the suture release device. When the suture needle exits the needle retention port, the suture release device and the limiting structure form a limiting stop, so that the suture end is separated from the suture needle and remains in the core rod assembly. In this way, there is no need to separate the suture needle head from the suture arm. The suture end can be left in the core rod assembly by the suture release device. This avoids the difficulty of suture release caused by the connection between the suture needle head and the suture arm being too tight, and also avoids the suture needle head accidentally falling into the patient's body and causing injury due to the connection between the suture needle head and the suture arm being too loose, thereby improving the reliability of the suture needle. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a surgical suture device when it is not performing suturing, according to a specific embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a surgical suture device performing suturing according to a specific embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of a surgical suture provided in a specific embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of a suture needle provided in a specific embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a suture provided in a specific embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a suture needle provided in a specific embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the suture needle before it penetrates the suture piece, according to a specific embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of a suture needle penetrating a suture release piece according to a specific embodiment of the present invention;

[0033] Figure 10This is a schematic diagram of the structure of the suture needle detaching from the suture release component according to a specific embodiment of the present invention;

[0034] Figure 11 This is an exploded view of the distal end of a surgical suture provided in a specific embodiment of the present invention;

[0035] Figure 12 This is a cross-sectional view of the wire-detaching component provided in another specific embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the structure of a wire-removing component provided in another specific embodiment of the present invention;

[0037] Figure 14 This is a cross-sectional view of the wire-detaching component provided in another specific embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the structure of the suture needle before it passes through the suture removal piece, according to another specific embodiment of the present invention;

[0039] Figure 16 This is a schematic diagram of the structure of the suture needle passing through the thread-removing component according to another specific embodiment of the present invention;

[0040] Figure 17 This is a schematic diagram of the structure of the suture needle detaching from the suture release component according to another specific embodiment of the present invention;

[0041] Figure 18 This is a schematic diagram of the structure of a surgical suture provided in another specific embodiment of the present invention;

[0042] Figure 19 This is a schematic diagram of the puncture device provided in a specific embodiment of the present invention;

[0043] Figure 20 This is a schematic diagram of the movement trajectory of a suture in the human abdominal wall tissue, provided by a specific embodiment of the present invention.

[0044] The above figures include the following reference numerals:

[0045] 10. Handle; 20. Core rod assembly; 21. Needle outlet; 22. Needle inlet; 23. Wire guide groove; 24. First limiting member; 25. Second limiting member; 26. Mounting bracket; 30. Drive rod; 40. Suture needle; 41. Suture needle tip; 42. Suture thread limiting groove; 43. Elastic member; 44. Transmission rod; 45. Suture arm; 50. Suture thread; 60. Thread release member; 61. Spring; 62. Fixing plate; 70. Limiting protrusion; 80. Suture thread storage structure; 81. Storage member; 82. Storage end; 83. Activating member; 90. Sleeve assembly; 100. Suture button; 110. Airbag assembly; 120. Human abdominal wall tissue; 130. Puncture hole. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0047] It is important to understand that the terms "proximal" and "distal" used in this article are relative to the clinician manipulating the suture device. "Proximal" refers to the portion closer to the clinician, while "distal" refers to the portion farther from the clinician. That is, the end closer to the handle 10 is the proximal end, and the end closer to the suture receiving structure 80 is the distal end. However, the suture device can be used in many directions and positions, so these terms expressing relative positional relationships are not limited or absolute.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements, such as contact. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. It should be noted that when "connected" or "linked" is preceded by a qualifier, it has the meaning defined by that qualifier, excluding only obviously excluded cases, but not other possible cases. For example, "detachable connection" refers to a detachable connection, excluding an integral part, but movable connections are not excluded.

[0049] The puncture hole 130 is a hole-like wound formed by puncturing the abdominal wall tissue 120 of the human body using sharp and pointed surgical instruments. The abdominal wall tissue 120 has a certain thickness and includes an inner wall and a relatively outer wall. The outer wall is the skin. The human organs and tissues are located in the inner space of the abdominal wall tissue 120. This inner space refers to the space inside the inner wall of the abdominal wall tissue 120, and is not the thickness of the abdominal wall tissue 120.

[0050] Please see Figures 1 to 11 This embodiment provides a suture device for surgical procedures, including a handle portion 10, a mandrel assembly 20, a drive rod 30, a suture release member 60, and a suture assembly. The handle portion 10 provides a grip. The proximal end of the mandrel assembly 20 is connected to the handle portion 10, and the distal end of the mandrel assembly 20 is used to pass through a puncture hole 130 located in the abdominal wall tissue 120. The drive rod 30 is disposed within the mandrel assembly 20. A needle inlet 22 is provided on the mandrel assembly 20, and the suture release member 60 is disposed within the mandrel assembly 20 and at least partially obscures the needle inlet 22. The suture assembly is driven by the drive rod 30 to suture the puncture hole 130, and at least a portion of the suture assembly is disposed within the mandrel assembly 20. The suture assembly includes a suture needle 40 and a suture 50. The suture needle 40 has a suture limiting groove 42, and at least a portion of the suture end of the suture 50 is accommodated in the suture limiting groove 42. The suture end of the suture 50 has a limiting structure to stop the suture end of the suture 50 from the suture needle 40. A drive rod 30 is driven by the suture needle 40, and the suture needle 40 is driven to move, thereby driving the suture 50 to suture the puncture hole 130. The suture needle 40 drives the suture 50 to first pass through the abdominal wall tissue 120, then through the needle inlet 22 and through the suture release member 60. When the suture needle 40 exits the needle inlet 22, the suture release member 60 and the limiting structure form a limiting stop, so that the suture end of the suture 50 is detached from the suture needle 40 and remains in the core rod assembly 20.

[0051] By creating a suture limiting groove 42 on the suture needle 40, at least a portion of the suture end of the suture 50 is accommodated within the suture limiting groove 42, and a limiting structure is provided at the suture end of the suture 50 to stop the suture end from the suture needle 40. Then, a suture release element 60 is provided at the needle outlet 22 of the core rod assembly 20. The suture needle 40 drives the suture 50 through the needle outlet 22 into the suture release element 60. When the suture needle 40 exits the needle outlet 22, the suture release element 60 and the limiting structure form a limiting stop, thus stopping the suture end from being stopped. The suture end 50 detaches from the suture needle 40 and remains inside the core rod assembly 20. This eliminates the need for the suture needle head 41 of the suture needle 40 to separate from the suture arm 45. The suture end 50 can be left inside the core rod assembly 20 by the suture release device 60. This avoids the difficulty of suture release caused by the connection between the suture needle head 41 and the suture arm 45 being too tight, and also avoids the accidental dislodgement of the suture needle head 41 into the patient's body and causing injury due to the connection between the suture needle head 41 and the suture arm 45 being too loose, thereby improving the reliability of the suture needle 40.

[0052] Please see Figure 5 , Figures 7 to 10 The suture needle 40 includes a suture arm 45 and a suture needle tip 41. The suture arm 45 is fixedly connected to the suture needle tip 41 or is integrally formed. That is, the suture needle 40 in this embodiment is an integral structure rather than a separate structure. The suture suture limiting groove 42 is located at the suture needle tip 41.

[0053] In a specific embodiment of the present invention, the suture release element 60 is made of a flexible soft material. Specifically, the suture release element 60 can be made of any one of silicone, TPU, or rubber. Using the above-mentioned materials, after the suture needle 41 penetrates the suture release element 60, the portion of the suture release element 60 squeezed out by the suture needle 41 will not detach from the suture release element 60. After the suture needle 41 withdraws from the suture release element 60, the suture release element 60 returns to its original shape, thereby forming sufficient limiting and stopping structures for the suture 50, preventing the suture 50 from detaching from the suture release element 60, and ensuring normal suturing of the suture 50. Of course, the suture release element 60 can also be made of other flexible soft materials, which can be selected according to actual needs.

[0054] Please see Figure 4The core rod assembly 20 includes a first limiting member 24 and a second limiting member 25. The first limiting member 24 and the second limiting member 25 are disposed at the needle inlet 22 and are radially spaced along the core rod assembly 20. The suture release member 60 extends between the first limiting member 24 and the second limiting member 25 and is clamped by them. Specifically, the first limiting member 24 and the second limiting member 25 are arc-shaped blocks coaxially arranged with the central axis of the core rod assembly 20, thus adapting to the rod wall of the core rod assembly 20. Both the first limiting member 24 and the second limiting member 25 extend circumferentially along the core rod assembly 20. In a specific embodiment of the invention, two first limiting members 24 and two second limiting members 25 are disposed at one needle inlet 22. The first limiting members 24 and the second limiting members 25 are located in pairs on both sides of the needle inlet 22, thereby clamping both ends of the suture release member 60 to ensure a clamping effect, and thus ensuring that the suture needle 40 can smoothly penetrate the suture release member 60. It is understandable that the two first limiting members 24 and the two second limiting members 25 are all spaced apart along the axial direction of the core rod assembly 20.

[0055] Please see Figure 6 , Figures 8 to 10 The limiting structure includes two limiting protrusions 70, which are spaced apart. The portion of the suture 50 located between the two limiting protrusions 70 is accommodated in the suture limiting groove 42, and the two limiting protrusions 70 respectively limit and stop the two sides of the suture needle tip 41 of the suture needle 40.

[0056] Please see Figure 12 In an optional embodiment of the present invention, the thread-removing component 60 is a spring-loaded structure. Specifically, the spring-loaded structure includes two springs 61, one end of which is fixedly disposed on both sides of the needle-holding port 22. Specifically, one end of the spring 61 extends between the first limiting member 24 and the second limiting member 25 and is clamped by the first limiting member 24 and the second limiting member 25. The other ends of the two springs 61 are bent at a predetermined angle in a direction close to the central axis of the core rod assembly 20, thereby forming a V-shaped structure. The two springs 61 are symmetrically arranged. The bent ends of the two springs 61 can abut against each other or have a certain distance between them. In this embodiment, the springs 61 are strip-shaped springs, and the two springs 61 are spaced apart along the axial direction of the core rod assembly 20. It can be understood that the opening of the V-shaped structure faces the needle-holding port 22.

[0057] Please see Figures 13 to 14In another optional embodiment of the present invention, the spring sheet structure includes a spring sheet 61 and a fixing plate 62. The fixing plate 62 has a strip-shaped hole extending along its length. There are two spring sheets 61, which are respectively disposed on both sides of the strip-shaped hole. Each spring sheet 61 includes a first end and a second end. The first end is fixedly disposed on the fixing plate 62, and the second end extends from the first end in a direction close to the central axis of the core rod assembly 20 and is disposed at a predetermined angle with the fixing plate 62, thereby forming a V-shaped structure. The two spring sheets 61 are symmetrically arranged. The bent ends of the two spring sheets 61 can abut against each other or have a certain distance between them. It is understood that the opening of the V-shaped structure faces the needle insertion port 22. In this embodiment, the spring sheet 61 is a strip-shaped spring sheet. The two ends of the fixing plate 62 extend between the first limiting member 24 and the two second limiting members 25, respectively, and are fixedly connected to the mounting bracket 26 of the core rod assembly 20. The middle section of the fixing plate 62 is clamped by the two first limiting members 24 and the two second limiting members 25.

[0058] Please see Figures 15 to 17 When the suture needle 40 drives the suture 50 into the needle retention port 22, it passes through the middle of the V-shaped structure. When the suture needle 40 exits the needle retention port 22, the two spring pieces form a limiting stop with the two limiting protrusions 70 of the limiting structure, so that the end of the suture 50 is separated from the suture needle 40 and remains in the core rod assembly 20.

[0059] In a specific embodiment of the present invention, the limiting protrusion 70 is formed by knotting or melting the suture 50. This method ensures that the limiting protrusion 70 and the suture 50 are an integral structure, preventing the limiting protrusion 70 from easily detaching from the suture 50 and thus affecting the suturing of the puncture hole 130 by the suturer. Of course, the limiting protrusion 70 can also be configured in other ways, as long as there is sufficient strong connection between it and the suture 50.

[0060] Specifically, the suture groove 42 extends radially through the suture needle tip 41 of the suture needle 40. This allows the portion of the suture needle 40's suture end located between the two limiting protrusions 70 to be accommodated within the suture groove 42, and enables the two limiting protrusions 70 to respectively limit and stop the suture needle tip 41 on both sides. It should be noted that radial refers to the direction perpendicular to the movement direction of the suture needle 40, that is, the cross-sectional direction of the suture needle 40.

[0061] Furthermore, the radial thickness of the suture groove 42 is less than the distance between the two limiting protrusions 70. It can be understood that the radial thickness of the suture groove 42 is the thickness between the two sides of the suture needle 41, so that the portion of the suture needle 40 located between the two limiting protrusions 70 can be accommodated within the suture groove 42, and that the two limiting protrusions 70 can respectively limit and stop the suture needle 41 from both sides.

[0062] In a specific embodiment of the present invention, the suture needle 40 has a semi-closed hollow area at the suture needle tip 41. The suture needle 40 includes an elastic member 43, which extends from one end of the opening of the hollow area along the length of the suture needle 40 to the other end of the opening of the hollow area, thereby blocking at least a portion of the opening of the hollow area and forming a suture thread limiting groove 42. One side of the elastic member 43 is a groove wall of the suture thread limiting groove 42. It can be understood that the opening of the suture thread limiting groove 42 is the remaining part of the opening of the hollow area after it is blocked by the elastic member 43, that is, the part of the suture needle 40 where the thread tip is located between the two limiting protrusions 70 enters the suture thread limiting groove 42.

[0063] With the above settings, when the suture needle 41 pulls the end of the suture 50 through the thread-removing device 60 and then exits the thread-removing device 60, it can easily detach from the end of the suture 50, ensuring the normal thread removal process.

[0064] In a specific embodiment of the present invention, the suture needle 40 has an arc-shaped needle tip 41 and an arc-shaped suture groove 42, and the arc of the suture groove 42 is adapted to the suture needle tip 41 of the suture needle 40. It should be noted that the adaptation here does not necessarily require that the arc of the suture groove 42 be the same as the arc of the suture needle tip 41, but rather that they maintain a similar curvature. This ensures that the thickness between the inner wall of the suture groove 42 and the outer surface of the opposite suture needle tip 41 remains uniform, preventing the thickness of the suture needle tip 41 from being too small at a certain position in the suture groove 42, which would affect the strength of the suture needle tip 41.

[0065] Furthermore, the width of the suture groove 42 gradually increases from the opening to the bottom. It should be noted that the width of the suture groove 42 is the distance between the inner wall of the suture groove 42 and the inner wall of the elastic element 43. Specifically, the suture groove 42 can be spindle-shaped, teardrop-shaped, or similar. In addition, to ensure the limiting function of the limiting protrusion 70, the outer diameter of the limiting protrusion 70 is larger than the width of the suture groove 42.

[0066] In a specific embodiment of the present invention, the opening width of the suture groove 42 is smaller than the diameter of the suture 50. Thus, when the end of the suture needle 40 located between the two limiting protrusions 70 enters the suture groove 42, it can compress the elastic element 43, causing the elastic element 43 to deform and enter the suture groove 42. The elastic element 43 then returns to its initial position, acting as a stop for the suture 50 within the suture groove 42, preventing the suture 50 from detaching from the opening of the suture groove 42.

[0067] Furthermore, the bottom width of the suture groove 42 is greater than the diameter of the suture 50. The depth of the suture groove 42 is greater than the diameter of the suture 50. This ensures that the suture groove 42 has sufficient space to accommodate the suture 50. It should be noted that the depth of the suture groove 42 refers to the distance from the opening of the suture groove 42 to the bottom.

[0068] Please see Figures 7 to 10 The suture needle 40 includes a drive rod 44 and a suture arm 45. One end of the drive rod 44 is drivenly connected to the drive rod 30. The suture arm 45 is connected at an angle to the other end of the drive rod 44, with the end of the suture arm 45 away from the drive rod 44 serving as the suture needle tip 41. Specifically, one end of the drive rod 44 has a rotating shaft and a gear sleeved on the rotating shaft. The drive rod 30 is provided with a rack segment that meshes with the gear. When the drive rod 30 moves axially along the core rod assembly 20, the rack segment drives the gear to rotate, thereby driving the rotating shaft to rotate. The suture arm 45 is arc-shaped, thus rotating along an arc-shaped trajectory under the drive of the rotating shaft.

[0069] Please see Figures 1 to 3 , Figure 11 The core rod assembly 20 also has a needle outlet 21, which is spaced apart from the needle retention outlet 22. A suture needle 40 is housed within the core rod assembly 20 and correspondingly positioned with respect to the needle outlet 21. Specifically, there are two suture needles 40, positioned opposite each other. Correspondingly, there are also two needle outlets 21 and two needle retention outlets 22, both positioned opposite each other. Correspondingly, there are also two thread release components 60, each positioned within one of the two needle retention outlets 22.

[0070] Please see Figures 1 to 3 The surgical stapler also includes a suture storage structure 80. The suture storage structure 80 is connected to the distal end of the mandrel assembly 20 and is used to accommodate at least a portion of the suture 50.

[0071] For details, please refer to Figure 11The suture storage structure 80 includes a storage member 81, a storage end 82, and a firing member 83. The storage end 82 has a storage cavity and a notch communicating with the storage cavity. The suture storage structure 80 has a stored state and a released state. The firing member 83 is connected to the storage end 82 and movably connected to the storage member 81. The firing member 83 is driven by a drive rod 30, thereby controlling the firing member 83 to move the storage end 82 away from the storage member 81, so that the suture storage structure 80 switches from the stored state to the released state. In the stored state, the storage cavity stores at least a portion of the storage member 81, and a semi-enclosed storage space is formed between the storage end 82 and at least a portion of the storage member 81. The suture 50 is folded back and forth to form connected folded segments and thread ends extending from the ends of the folded segments. At least a portion of the folded segments is stored in the storage space, and the thread ends extend from the notch out of the storage end 82. In the released state, the storage space is exposed, so that the suture 50 is exposed.

[0072] Please see Figures 1 to 2 , Figure 11 The core rod assembly 20 also has a guide groove 23. The guide groove 23 extends axially along the core rod assembly 20. The end of the suture 50 passes through the guide groove 23 and extends into the needle outlet 21 to connect with the suture needle 40. It can be understood that there are also two guide grooves 23 arranged opposite each other. The suture 50 is a single thread. The middle part of the suture 50 is stored in the suture storage structure 80, and the two ends of the suture 50 extend from the suture storage structure 80 and pass through the two guide grooves 23 respectively, thereby connecting with the two suture needles 40 in the two needle outlets 21 respectively. By setting the guide groove 23, the suture 50 can be accommodated in the guide groove 23, thereby not increasing the diameter of the core rod assembly 20. Therefore, on the one hand, it can reduce the frictional resistance so that the suture device can directly enter the human body. On the other hand, when the suture device is used in conjunction with the cannula assembly 90, the inner diameter of the hollow cavity of the cannula assembly 90 is not increased.

[0073] Please see Figure 3 The surgical stapler also includes a suture button 100. The suture button 100 is located at the proximal end of the handle portion 10 and is drivenly connected to the drive rod 30.

[0074] Figure 20 This is a schematic diagram illustrating the movement trajectory of the suture 50 within the abdominal wall tissue 120, provided for a specific embodiment of the present invention. The suture 50 moves under the influence of the needle tip 41 of the suture needle 40, therefore... Figure 20This is also a schematic diagram of the movement trajectory of the suture needle 41 of the suture needle 40. When the puncture hole 130 needs to be sutured, the two suture needles 40 extend from the two exit ports 21 respectively, and the two suture needles 41 penetrate into the abdominal wall tissue 120 from points A and B respectively. Specifically, points A and B are located on opposite sides of the puncture hole 130. As the rotating axis continues to rotate, the suture needles 41 continue to move the suture 50 within the abdominal wall tissue 120, and then the two suture needles 41 exit from points C and D respectively and enter the two indwelling needle ports 22 respectively. Specifically, points C and D are located on opposite sides of the inner wall of the puncture hole 130.

[0075] Specifically, the process of suturing the puncture hole 130 with the suture device is as follows.

[0076] When the puncture hole 130 needs to be sutured after the surgery, the distal end of the suture device is inserted into the puncture hole 130 and penetrates deep into the inner side of the abdominal wall tissue 120. Pressing the suture button 100 causes the suture needle 40 to extend from the needle exit 21 and penetrate into the abdominal wall tissue 120 on the opposite side of the puncture hole 130, causing the suture suture storage structure 80 to switch from a stored state to a released state. Before the suture needle 40 begins to move, the suture suture storage structure 80 releases the suture 50, allowing the suture needle 40 to drive the suture 50 through the abdominal wall tissue 120. The suture needle tip 41 of the suture needle 40 drives the suture 50 into the needle retention port 22 and through the suture release device 60. Then, the suture needle tip 41 of the suture needle 40 disengages from the suture release device 60, thus retracting from the needle retention port 22 back into the needle exit port 21. At this time, the end of the suture 50 is limited and stopped by the suture release device 60 within the core rod assembly 20. The suture device is removed, and it drives the suture release element 60 within the core rod assembly 20, thereby pulling the two ends of the suture 50 connected to the suture release element 60 out of the puncture hole 130. During the process of moving the suture device proximally, the portion of the suture 50 below the puncture hole 130 is pulled and gradually shortened, causing the puncture hole 130 to tighten. Finally, the two ends of the suture 50 are interlaced and knotted above the tightened puncture hole 130, and the excess suture 50 is cut off, thus completing the suturing of the puncture hole 130.

[0077] In one specific implementation, please refer to Figure 18The surgical suture device also includes a balloon assembly 110. The balloon assembly 110 includes a balloon disposed at the distal end of the mandrel assembly 20. The balloon has a first inflated state and a second inflated state. In the first state, the mandrel assembly 20 and the balloon assembly 110 can pass through or exit from the puncture hole 130. In the second state, the balloon provides a protective space, restricting the movement of the suture needle 40 within this protective space. Specifically, after inflation, the balloon of the balloon assembly 110 expands the space inside the abdominal wall tissue 120 and surrounding the balloon to form a protective space within the area where the balloon is located. Through this arrangement, the inflated balloon expands the human organ tissue while providing a protective space, thus restricting the movement of the suture needle 40 within the protective space and preventing the suture needle 40 from accidentally injuring human organ tissue during suturing.

[0078] Please see Figure 19 In a specific embodiment of the present invention, a puncture device is also provided, comprising the aforementioned surgical suture device and cannula assembly 90. The suture device extends into the cannula assembly 90. The aforementioned suture device does not have a puncture function; in this case, puncture can be performed by other sharp and pointed surgical instruments. In another specific embodiment of the present invention, the suture storage structure 80 is tapered with its tip pointing distally, thus forming a puncture end. Specifically, the outer shell of the suture storage structure 80 is tapered with its tip pointing distally, forming the puncture end; the other structures of the suture storage structure 80 are the same as those of the aforementioned suture storage assembly. A cutting edge is provided on the outer surface of the suture storage structure 80, which is used to form a puncture hole 130. Specifically, a cutting edge is provided on the outer surface of the outer shell of the suture storage structure 80.

[0079] The puncture device of this invention has both puncture and suturing functions. During surgery, the doctor first makes a small incision in the patient's abdomen and uses the puncture end of the suture device provided by this invention to puncture the human tissue to form a puncture hole 130. The distal part of the cannula assembly 90 is inserted into the human body, and the suture device is separated from the cannula assembly 90 by pressing the insert assembly (not shown in the figure), and the suture device is pulled out from the cannula assembly 90. Then, surgical instruments are inserted into the cannula assembly 90 to perform the surgery. After the surgery is completed, the surgical instruments are removed, the suture device is reinserted into the cannula assembly 90, and the insert assembly is used to re-engage the suture device with the cannula assembly 90, initiating the suturing operation. The specific suturing operation is the same as described above and will not be repeated here.

[0080] In summary, according to the suture device and puncture device of the present invention, by opening a suture limiting groove 42 on the suture needle 40, at least a portion of the suture end of the suture 50 is accommodated in the suture limiting groove 42, and a limiting structure is provided at the suture end of the suture 50 to limit and stop the suture end of the suture 50 with the suture needle 40, and then a suture release member 60 is provided at the needle retention port 22 of the core rod assembly 20. The suture needle 40 drives the suture 50 through the needle retention port 22 and into the suture release member 60. When the suture needle 40 exits the needle retention port 22, the suture release member 60 and the limiting structure form a limit. The stopper allows the suture end of the suture 50 to detach from the suture needle 40 and remain inside the core rod assembly 20. This eliminates the need for the suture needle head 41 of the suture needle 40 to separate from the suture arm 45. The suture end of the suture 50 can be kept inside the core rod assembly 20 by the suture release device 60. This avoids the difficulty of suture release caused by the connection between the suture needle head 41 and the suture arm 45 being too tight, and also avoids the accidental detachment of the suture needle head 41 into the patient's body and causing injury due to the connection between the suture needle head 41 and the suture arm 45 being too loose, thereby improving the reliability of the suture needle 40.

[0081] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0082] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A suture device for surgical procedures, characterized in that, include: The handle is designed for gripping. A core rod assembly, the proximal end of which is connected to the handle portion, and the distal end of which is used to pass through a puncture hole; A drive rod, which is disposed within the core rod assembly; A thread-removing component is provided, wherein the core rod assembly has a needle-holding port, and the thread-removing component is disposed inside the core rod assembly and at least partially covers the needle-holding port; A suture assembly is driven by the drive rod to suture the puncture hole; at least a portion of the suture assembly is disposed in the core rod assembly; the suture assembly includes a suture needle and a suture thread; the suture needle has a suture thread limiting groove; at least a portion of the suture thread end is accommodated in the suture thread limiting groove; the suture thread end has a limiting structure to stop the suture thread end from the suture needle; the drive rod is driven to the suture needle, and the suture needle is driven to move, causing the suture thread to pass through the needle inlet and through the thread release member; when the suture needle exits the needle inlet, the thread release member and the limiting structure form a limiting stop, so that the suture thread end detaches from the suture needle and remains in the core rod assembly.

2. The suture device for surgical procedures according to claim 1, characterized in that, The suture needle includes a suture arm and a suture needle head. The suture arm is fixedly connected to the suture needle head or is integrally formed therefrom. The suture thread limiting groove is located at the suture needle head.

3. The suture device for surgical procedures according to claim 1, characterized in that, The wire-removing component is made of a flexible soft material.

4. The suture device for surgical procedures according to claim 3, characterized in that, The detachable component is made of any one of silicone, TPU, or rubber.

5. The suture device for surgical procedures according to claim 1, characterized in that, The core rod assembly includes a first limiting member and a second limiting member. The first limiting member and the second limiting member are disposed at the needle outlet and are radially spaced along the core rod assembly. The thread-removing member extends between the first limiting member and the second limiting member and is clamped by the first limiting member and the second limiting member.

6. The suture device for surgical procedures according to claim 1, characterized in that, The thread-removing component is a spring-loaded structure, which includes two spring-loaded pieces. One end of each spring-loaded piece is fixedly disposed on both sides of the needle-holding opening, and the other end of each spring-loaded piece is bent at a preset angle along the direction close to the central axis of the core rod assembly to form a V-shaped structure.

7. The suture device for surgical procedures according to claim 1, characterized in that, The wire-removing component is a spring-loaded structure, which includes a fixing plate and two spring-loaded pieces. The fixing plate has a strip-shaped hole extending along the length direction. The two spring-loaded pieces are respectively fixed on both sides of the strip-shaped hole, and the two spring-loaded pieces extend along the direction close to the central axis of the core rod assembly and are set at a preset angle with the fixing plate to form a V-shaped structure.

8. The suture device for surgical procedures according to claim 1, characterized in that, The limiting structure includes two limiting protrusions, which are spaced apart. The portion of the suture thread located between the two limiting protrusions is accommodated in the suture thread limiting groove. The two limiting protrusions respectively limit and stop the two sides of the suture needle tip.

9. The suture device for surgical procedures according to claim 8, characterized in that, The limiting protrusion is formed by knotting the suture or by hot-melting the suture.

10. The suture device for surgical procedures according to claim 8, characterized in that, The radial thickness of the suture groove is less than the distance between the two limiting protrusions.

11. The suture device for surgical procedures according to claim 1, characterized in that, The suture groove extends radially through the tip of the suture needle.

12. The suture device for surgical procedures according to claim 1, characterized in that, The suture needle has a semi-closed hollow area at the needle tip. The suture needle includes an elastic element that extends from one end of the opening of the hollow area along the length of the suture needle to the other end of the opening of the hollow area, so as to cover at least a portion of the opening of the hollow area and form the suture line limiting groove. One side of the elastic element is a groove wall of the suture line limiting groove.

13. The suture device for surgical procedures according to claim 1, characterized in that, The width of the suture groove gradually increases from the opening to the bottom.

14. The suture device for surgical procedures according to claim 2, characterized in that, The suture needle is arc-shaped, the suture suture limiting groove is arc-shaped, and the curvature of the suture suture limiting groove is adapted to the suture needle.

15. The suture device for surgical procedures according to claim 1, characterized in that, The opening width of the suture limiting groove is smaller than the diameter of the suture; and / or The bottom width of the suture groove is greater than the diameter of the suture; and / or The depth of the suture limiting groove is greater than the diameter of the suture.

16. The suture device for surgical procedures according to any one of claims 1 to 15, characterized in that, The suture needle includes: A transmission rod, one end of which is drivenly connected to the drive rod; A suture arm is connected at an angle to the other end of the transmission rod, and the end of the suture arm away from the transmission rod is the suture needle tip.

17. The suture device for surgical procedures according to any one of claims 1 to 15, characterized in that, The suture device further includes a suture storage structure connected to the distal end of the core rod assembly, the suture storage structure being used to accommodate at least a portion of the suture.

18. A puncture device, characterized in that, include: The surgical suture device according to any one of claims 1 to 17; Sleeve assembly; The suture device extends into the cannula assembly.

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