Universal telescopic line pusher for deep knotting and ring opening in skull base operation
By designing a retractable, open-loop suture pusher for deep knotting in skull base surgery, the problem of deep suturing in confined spaces was solved, enabling efficient and safe deep knotting operations and improving surgical efficiency and safety.
Patent Information
- Application Number
- CN202422915839.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In endoscopic transnasal skull base surgery, craniotomy for deep skull base lesions, and craniocerebral injury surgery involving skull base fractures and cerebrospinal fluid leakage, traditional knotting methods are difficult to achieve precise deep suturing in confined surgical spaces, resulting in low surgical efficiency and high risks. In particular, the difficulty of deep knotting operations increases significantly.
Design a deep knot-tying open-loop universal telescopic suture pusher for skull base surgery, including a handle, a bend, and a suture pusher. The suture pusher has an open-loop design and an easy-to-thread and anti-loosening component, which can flexibly adjust the angle and direction. Combined with a split handle and telescopic rod, it can adapt to operation in confined spaces and ensure accurate suture pushing.
It improves the efficiency and precision of surgery, reduces the number of procedures and the risk of infection, enhances the safety and applicability of surgery, and reduces potential damage to nerves and blood vessels.
Smart Images
Figure CN223817597U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a deep knotting open-loop universal retractable pusher for skull base surgery. Background Technology
[0002] In endoscopic transnasal skull base surgery, craniotomy for deep skull base lesions, and craniocerebral injury surgeries involving skull base fractures or cerebrospinal fluid leaks, dural repair is often required. The narrow surgical field places special demands on surgical instruments. Due to the long and narrow surgical channel and limited operating space, traditional knot-tying methods are often difficult to implement. Therefore, it is necessary to rely on a knot pusher to push the knot from the outside towards the surgical area for tying. The application of the knot pusher is particularly important in these surgeries. It not only improves surgical efficiency and helps achieve physiological reconstruction of the dura mater at the skull base, but also reduces surgical trauma and infection risks to a certain extent, and protects surrounding important blood vessels and nerves.
[0003] In skull base surgeries such as endoscopic surgery, the space occupied by essential instruments like endoscopes and suction devices, coupled with the depth of the surgical cavity, becomes extremely limited, leaving very little room for other surgical instruments. This spatial constraint significantly reduces the freedom of movement of surgical instruments, particularly increasing the difficulty of deep knot-tying operations. Precisely pushing knotted sutures to their designated suture sites has become a major challenge in skull base reconstruction during neuroendoscopic surgeries and other skull base surgeries.
[0004] In summary, there is an urgent need to design a deep knotting open-loop universal retractable suture pusher for skull base surgery that overcomes the aforementioned technical problems. Utility Model Content
[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a deep knotting open-loop universal retractable suture pusher for skull base surgery, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions:
[0007] A deep knotting and opening loop universal retractable suture pusher for skull base surgery includes a handle, an elbow at its front end, and a suture pusher head at the front end of the elbow.
[0008] The pusher head has an open-loop design and an easy-threading and anti-loosening component at its end.
[0009] Optionally, the elbow and the handle have a 15-degree tilt angle.
[0010] Optionally, the handle is a split design, which includes a main rod and a telescopic rod at its tail end;
[0011] The diameter of the main rod gradually decreases from the tail end to the head end.
[0012] The telescopic rod is composed of at least two sections of rods with different diameters joined together.
[0013] Optionally, the easy-thread anti-loosening component is a thread inlet that penetrates one side wall of the annular thread pusher head. The opening of the thread inlet is located at the eight o'clock position of the thread pusher head, and it has an irregular arc design with the other end connected to the annular opening of the thread pusher head.
[0014] Optionally, the sidewalls of the easy-thread anti-loosening component are designed with smooth arcs and the inlet is passivated.
[0015] Optionally, the filament pusher may be a reusable medical product made of alloy or medical-grade stainless steel, or a disposable medical product manufactured by additive manufacturing such as 3D printing.
[0016] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in:
[0017] This invention provides a retractable, open-loop suture pusher for deep knot tying in skull base surgery. The pusher can flexibly adjust its angle and direction to ensure accurate pushing of the knot to the designated position in a confined surgical space. The introduction of an easy-threading and anti-loosening component simplifies the threading process, facilitates continuous knot pushing during knot tying, reduces the number of surgical steps and the potential infection risk associated with increased steps, thereby improving overall surgical efficiency and safety.
[0018] This invention provides a universal retractable suture pusher for deep knot tying and opening loop in skull base surgery, which not only improves the efficiency and accuracy of the surgery, but also enhances the safety of the surgery, and has wide applicability and a good operating experience.
[0019] The above description is only an overview of the technical solution of this utility model. In order to clearly understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the deep knotting and opening loop universal retractable suture pusher for skull base surgery according to this utility model.
[0022] Figure 2 This is another structural schematic diagram of the skull base surgery deep knotting and opening loop universal retractable pusher of this utility model.
[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0024] Figure 4 This is another structural schematic diagram of the skull base surgery deep knotting and opening loop universal retractable pusher of this utility model.
[0025] Figure 5 for Figure 4 Enlarged view of point B in the middle;
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Handle section; 11. Main rod body; 12. Telescopic rod;
[0028] 2. Elbow; 3. Push wire end; 31. Circular opening;
[0029] 4. Easy-threading and anti-loosening component; 41. Cable inlet; Detailed Implementation
[0030] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the skull base surgery deep knotting open-loop universal retractable suture pusher proposed by this utility model.
[0031] like Figures 1-5 As shown, the present invention provides a deep knotting and opening loop universal retractable pusher for skull base surgery, including a handle 1, a bend 2 at its front end, and a pusher head 3 at the front end of the bend 2.
[0032] The pusher head 3 has an open-loop design and an easy-threading and anti-loosening component 4 at its end. The open-loop design of the pusher head 3 can form a continuous push section. The open-loop structure not only facilitates the insertion of the sewing thread and the pushing of the knot, but also maintains the stability and continuity of the knot during the pushing process, preventing the knot from loosening or falling off during the pushing process.
[0033] During the surgery, medical staff first hold the suture pusher through the handle 1, adjusting the angle and position of the suture pusher head 3 to align it with the deep location where a knot needs to be tied. Then, utilizing the open-loop design of the suture pusher head 3 and the easy-threading, anti-loosening component 4, the suture is threaded into the suture pusher head 3. Next, by operating the handle 1, the suture pusher head 3 is moved along a predetermined path, pushing the knot to the designated suture site. Due to the flexibility and continuity of the open-loop suture pusher head 3, this invention can easily handle complex situations in skull base surgery, ensuring the accuracy and safety of deep knot tying operations.
[0034] In a preferred embodiment, the elbow 2 and the handle 1 have a 15-degree tilt angle; the elbow 2 is designed to be upturned by approximately 15 degrees, remaining parallel to the operating surface after rotation. This design ensures that during the insertion process, the plane of the handle 1, i.e., the plane of the insertion direction, is parallel to the light direction of the endoscope or microscope. Simultaneously, the endoscope or microscope can always directly monitor the movement of the elbow 2 and the suture joint, which not only facilitates the surgeon maintaining a clear field of vision during surgery but also improves the stability, accuracy, and safety of the operation.
[0035] Furthermore, the handle part 1 is a split design, which includes a main rod 11 and a telescopic rod 12 located at its tail end;
[0036] The diameter of the main rod 11 gradually decreases from the tail end to the head end; the design of the decreasing diameter not only conforms to ergonomics, making it easy for medical staff to hold and operate, but also reduces the overall weight while maintaining strength.
[0037] The telescopic rod 12 is composed of at least two sections of tubing with different diameters joined together, allowing medical staff to adjust the length of the handle 1 according to surgical needs. The design of the telescopic rod 12 makes the suture pusher more flexible in adapting to different surgical environments and individual surgeons' operating habits. During surgery, medical staff first adjust the length of the handle 1 by adjusting the telescopic rod 12 according to surgical needs and their own operating habits.
[0038] Optionally, the easy-thread anti-loosening component 4 is a thread inlet 41 that penetrates one side wall of the annular pusher head 3. The opening of the thread inlet 41 is located at the eight o'clock position of the pusher head 3. It has an irregular arc design and the other end is connected to the annular opening 31 of the pusher head 3.
[0039] Specifically, the inlet 41 is located on one side wall of the suture head 3, specifically at the eight o'clock position. This position is chosen based on surgical operating habits and line of sight considerations, making it easier for the surgeon to observe and operate. The inlet 41 has an irregular arc-shaped design, which has multiple advantages.
[0040] First, the irregular arc shape is more adaptable to different shapes and thicknesses of surgical sutures than straight or regular arcs, making the threading process smoother. Second, the arc design also has a guiding function, guiding the surgical suture along a specific path into the interior of the suture pusher 3, reducing friction and resistance during threading. Finally, the irregular arc-shaped suture inlet 41 can better hold the surgical suture, preventing it from coming loose due to external forces during surgery. This not only improves the ease of threading but also significantly reduces the risk of surgical suture detachment.
[0041] In this application, the surgical suture is inserted into the annular opening 31 of the suture pusher 3 through the suture inlet 41 of the easy-thread anti-loosening component 4; the user operates the handle 1 to move the suture pusher 3 along a predetermined path, pushing the knot to the suture site. During the pushing process, the irregularly arc-shaped suture inlet 41 effectively prevents the surgical suture from falling off, ensuring the smooth progress of the surgery.
[0042] Optionally, the sidewall of the easy-thread anti-loosening component 4 is provided with a smooth arc and the inlet 41 is passivated.
[0043] Based on the smooth arc design, the sidewalls of the easy-threading and anti-loosening component 4 are passivated. Passivation also improves the surface quality of the component 4, making it smoother and more even, avoiding potential damage to the surgical suture and nerves / blood vessels caused by sharp edges and protrusions. The suture inlet 41 is a crucial part of the suture pusher, and its design directly affects the smoothness and durability of the suture. Passivation at the inlet 41 significantly reduces the frictional resistance of the suture when entering and exiting the open loop, reducing heat and wear caused by friction, thereby extending the lifespan of the suture.
[0044] Optionally, the filament pusher may be a reusable medical product made of alloy or medical-grade stainless steel, or a disposable medical product manufactured by additive manufacturing such as 3D printing.
[0045] The suture pusher is made of reusable medical products using alloys and medical-grade stainless steel. Alloys and medical-grade stainless steel have high strength, corrosion resistance, and wear resistance. In the medical field, certain alloys (such as titanium alloys) are widely used due to their good biocompatibility and mechanical properties.
[0046] In addition to the aforementioned reusable embodiments, the suture pusher can also be made from disposable medical products manufactured using additive manufacturing methods such as 3D printing. The design of disposable medical products ensures the safety and hygiene of the surgery, reducing the risk of cross-infection. This not only improves the efficiency and success rate of the surgery but also protects the safety and health of the patient.
[0047] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A universal retractable suture pusher for deep knot tying in skull base surgery, characterized in that: It includes a handle (1), an elbow (2) located at its front end, and a push wire head (3) located at the front end of the elbow (2); The pusher head (3) has an open-loop design and is equipped with an easy-threading and anti-loosening component (4) at its end; The easy-thread anti-loosening component (4) is an inlet (41) that penetrates one side wall of the annular pusher head (3). The opening of the inlet (41) is located at the eight o'clock position of the pusher head (3), and it has an irregular arc design and the other end is connected to the annular opening (31) of the pusher head (3).
2. The skull base surgery deep knot-tying open-loop universal retractable suture pusher according to claim 1, characterized in that: The elbow (2) and the handle (1) have an inclination angle of 15 degrees.
3. The skull base surgery deep knot-tying open-loop universal retractable suture pusher according to claim 1, characterized in that: The handle (1) is a split design, which includes a main rod (11) and a telescopic rod (12) located at its tail end; The diameter of the main rod (11) gradually decreases from the tail end to the head end. The telescopic rod (12) is formed by connecting at least two sections of rods with different diameters.
4. The deep knot-tying, loop-opening, universal retractable suture pusher for skull base surgery according to claim 1, characterized in that: The sidewall of the easy-thread anti-loosening component (4) is set with a smooth arc and the inlet (41) is passivated.
5. The skull base surgery deep knot-tying open-loop universal retractable suture pusher according to claim 1, characterized in that: The suture pusher is a reusable medical product made of alloy or a disposable medical product manufactured by 3D printing.