Traction suspension fixing device for minimally invasive surgery

Abstract

The invention discloses a minimally invasive surgery traction, suspension and fixing device, and relates to the field of medical equipment assistance, in particular to the minimally invasive surgery traction, suspension and fixing device. Comprising an outer sleeve, a first limiting hole, a second limiting hole, an elastic traction sling, a water injection channel, a water ball film, a guide needle, a steel ball limiter and a clamp. According to the device, through interaction of the elastic traction sling and the limiting hole, flexible switching between a sharp puncture mode and a blunt puncture mode is achieved, and the puncture requirements of different tissues are met. The traction sling is telescopic and is matched with the stretching operation rod to adjust the traction force and position of the target tissue. The normal saline channel injects liquid into the water ball string, the expanded water ball string forms buffer support, the traction device is prevented from slipping off, and the operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment assistance, specifically a minimally invasive surgical traction, suspension and fixation device. Background Art

[0002] In modern minimally invasive surgery, tissue traction and suspension are crucial steps in the procedure, especially in laparoscopic surgery, where traction devices are widely used to stabilize the target tissue, allowing the surgeon to clearly expose the surgical field and perform subsequent operations. Currently, minimally invasive surgical devices are developing towards multifunctionality, precision, and safety. Devices that integrate traction, suspension, and fixation functions are highly favored by surgeons because they can reduce surgical trauma and increase operational flexibility. An existing hands-free minimally invasive liver suspension device for laparoscopic surgery (Publication No.: CN217886088U) has the following drawbacks and requires further improvement.

[0003] The device adopts a rigid design, and the pulling method for the target tissue is relatively simple, which can easily cause excessive pressure or damage to soft tissue. Secondly, the traditional device lacks a flexible puncture mode and cannot switch between sharp or blunt puncture methods according to the characteristics of different tissues, resulting in low operating efficiency and easy tissue damage. In addition, in terms of tissue fixation, due to the lack of effective multi-layer protection measures, once the instrument accidentally falls off or slides, the tissue position will become unstable, seriously affecting the safety and accuracy of the operation. Therefore, there is an urgent need for a multifunctional suspension device with elastic pulling ability, dual puncture mode switching and tissue protection functions. Summary of the Invention

[0004] The main purpose of the present invention is to provide a minimally invasive surgical traction, suspension and fixation device, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a minimally invasive surgical traction suspension fixation device.

[0006] An elastic traction sling is provided inside the outer sleeve, a guide needle is provided inside the elastic traction sling, and a clip is provided at one end of the outer sleeve; A first limiting hole is provided on one side of the outer sleeve, and a second limiting hole is provided on one side of the outer sleeve, and the first limiting hole and the second limiting hole are arranged in an array; Water injection channels are provided on both sides of the elastic traction sling, and a water ball membrane is provided at one end of the water injection channel; A steel ball stopper is provided on one side of the guide needle.

[0007] Preferably, both ends of the elastic traction sling are integrally formed with the water ball membrane through a water injection channel, and the inner diameter of the water injection channel is 1.5 mm.

[0008] Preferably, the center distance between the first limiting hole and the second limiting hole is 15 mm, and the two limiting holes are evenly distributed in a straight line along the length direction of the outer sleeve. The aperture of each limiting hole is 1 mm, and the steel ball limiter accurately positions the elastic traction sling. When the steel ball limiter is in the position of the first limiting hole, the guide needle will not pass through the front end of the elastic traction sling, which is a blunt puncture. The front end of the elastic traction sling punctures the tissue with a pointed structure, which is a sharp puncture.

[0009] Preferably, the steel ball limiter is fixed to the guide needle by press-fitting, the diameter of the steel ball is 1.2 mm, and the surface of the steel ball is provided with an anti-slip texture.

[0010] Preferably, reinforcing fiber layers are embedded in both sides of the elastic traction sling, the reinforcing fiber layers and the elastic traction sling are integrally molded, and the thickness of the reinforcing fiber layers is 0.2 mm.

[0011] Preferably, the water ball membrane is made of a double-layer medical silicone material, with a filling cavity provided between the inner and outer layers. The filling cavity is connected to the elastic traction sling through a water injection channel, and the maximum expansion diameter of the filling cavity is 30 mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The device features an integrated elastic traction strap within the outer sleeve, providing stable support for the entire device. Made of flexible material, the elastic traction strap provides gentle tissue traction, preventing the compression or damage to soft tissues caused by traditional rigid designs. Furthermore, the first and second limiting holes work together to enable flexible switching between sharp and blunt puncture tips, adapting to the puncture needs of different tissue types and improving the adaptability and safety of the surgical procedure.

[0013] The device injects liquid into the water balloon string through the water injection channel, causing it to expand and form a flexible cushioning structure, thereby improving the suspension device's fixation on tissue and reducing the risk of slippage. The double-layer design of the water balloon string and the arc protection of the blunt puncture tip further enhance the device's tissue protection capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded view of the overall structure of the present invention; Figure 3 It is a cross-sectional view of the entire A portion of the present invention; Figure 4 This is a schematic diagram of the unexpanded structure of the water ball membrane of the elastic traction sling of the present invention; Figure 5 This is a schematic diagram of the expansion structure of the water ball membrane of the elastic traction sling of the present invention; Figure 6This is a cross-sectional view of the water injection channel of the elastic traction sling of the present invention; Figure 7 This is a schematic diagram of the guide needle structure of the present invention; Figure 8 This is a schematic diagram of the overall blunt puncture of the present invention; Figure 9 It is a schematic diagram of the overall sharp puncture of the present invention.

[0015] In the figure: 1. outer sleeve; 11. first limiting hole; 12. second limiting hole; 2. elastic traction sling; 21. water injection channel; 22. water ball membrane; 3. guide needle; 31. steel ball limiter; 4. clip. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. Example

[0019] See also Figure 1-6 , the present invention provides a technical solution: Minimally invasive surgical traction suspension fixation device, the outer sleeve 1 is provided with an elastic traction sling 2 on the inner side, the elastic traction sling 2 is provided with a guide needle 3 inside, and one end of the outer sleeve 1 is provided with a clip 4; A first limiting hole 11 is provided on one side of the outer sleeve 1, and a second limiting hole 12 is provided on one side of the outer sleeve. The first limiting hole 11 and the second limiting hole 12 are arranged in an array. Water injection channels 21 are provided on both sides of the elastic traction sling 2, and a water ball membrane 22 is provided at one end of the water injection channel 21; A steel ball stopper 31 is provided on one side of the guide needle 3 .

[0020] The outer sleeve, the main component, is made of medical-grade stainless steel. Its inner diameter closely matches the outer diameter of the elastic traction sling, minimizing gaps to achieve precise guidance. A clip is provided at one end of the outer sleeve to secure the device to the surgical area, ensuring that it does not shift during use. A first and second limiting holes are arranged in an array on one side of the outer sleeve. A steel ball limiter adjusts the puncture state of the guide needle by adjusting the position of the limiting holes, allowing the device to flexibly switch between blunt and sharp punctures.

[0021] The elastic traction sling is made of rubber and embedded with a reinforced fiber layer to increase tensile strength. It is internally designed with a water injection channel and a guide needle. One end of the water injection channel is connected to the water ball membrane and the other end is connected to the water injection equipment. The design of the water injection channel ensures uniform distribution of liquid, allowing the water ball membrane to expand rapidly and evenly. The guide needle is made of high-strength alloy steel and one end is connected to a steel ball stopper. The steel ball stopper is fixed to the guide needle by press-fitting. The surface of the steel ball has a non-slip texture that fits tightly with the stopper hole of the outer sleeve to provide precise positioning.

[0022] The center-to-center distance between the first and second limiting holes is 15 mm, and the hole diameter is 1 mm. The steel ball stopper, with a diameter of 1.2 mm, precisely limits the position of the guide needle, enabling either blunt or sharp puncture. The front end of the elastic traction sling is designed with a pointed structure for sharp puncture. When the rounded tip of the guide needle protrudes, the front end of the sling pushes against soft tissue to achieve blunt puncture.

[0023] The water balloon membrane is made of a double-layer medical silicone material. Its internal filling cavity is flat when not filled with water. It is integrally molded with the elastic traction sling and connected to the filling cavity via a water injection channel. In its uninflated state, the membrane's softness and low pressure allow it to pass smoothly through tissue spaces without causing damage.

[0024] The water balloon membrane expands after saline is injected through the injection channel, reaching a maximum diameter of 30 mm. The expanded spherical structure increases the contact area with the target tissue, dispersing the traction force and protecting the tissue from concentrated pressure. The expanded water balloon membrane works synergistically with the elastic traction sling to apply traction to a large area of ​​the target tissue, reducing pressure on a single area.

[0025] The injection channel has an inner diameter of 1.5 mm and connects to external water injection equipment. Its smooth inner wall ensures rapid liquid flow while avoiding blockage caused by liquid stagnation. As the sole channel for the expansion of the water ball membrane, its precise dimensions ensure rapid and uniform water injection, enabling rapid expansion and stable traction.

[0026] The front end of the guide needle is rounded with a curvature radius of 0.3 mm, designed for blunt puncture. The rear end is threadedly connected to a steel ball retainer, ensuring the stability of the guide needle. The position of the steel ball retainer allows the guide needle to be adjusted to switch puncture methods. When the steel ball retainer is in the first retaining hole, the guide needle is completely concealed within the elastic traction sling. When in the second retaining hole, the rounded end protrudes, allowing for blunt puncture.

[0027] When the ball retainer is in the second stopper position, the rounded tip of the guide needle protrudes from the front of the elastic traction strap. Due to the large curvature of the rounded tip, blunt puncture primarily applies thrust to the soft tissue rather than cutting force, thereby reducing the risk of tissue damage. Blunt puncture is suitable for soft tissues such as fat or nerve tissue and can effectively avoid tissue tearing.

[0028] When the ball retainer is in the first position, the guide needle is confined within the elastic traction sling. The sling's tip acts as the puncture point, cutting and puncturing the target tissue through its sharp structure. Sharp puncture is suitable for harder tissues, such as fascia or aponeurosis, and can penetrate tissue with less force, improving surgical efficiency.

[0029] The outer sleeve is the main structure of the device, housing the elastic traction sling and guide needle. The elastic traction sling, made of rubber, runs along the inner wall of the outer sleeve and is embedded with the guide needle to ensure precise positioning during puncture. Water injection channels are symmetrically arranged on both sides of the elastic traction sling and connected to the water ball membrane. The integral design of the water injection channels ensures uniform injection of liquid into the water ball membrane.

[0030] One side of the outer sleeve is provided with a first and second retaining hole, arranged along its length to form an array. A steel ball retainer is mounted on one side of the guide needle, aligning with the retaining holes in the outer sleeve to position and secure the guide needle. A clip is attached to one end of the outer sleeve to secure and stabilize the device.

[0031] The working principle is: The puncture process is accomplished through the coordinated action of the guide needle and the elastic traction sling. When the steel ball stopper is positioned in the first stopper hole, the guide needle is confined within the elastic traction sling, and its sharp tip is used to penetrate harder tissues, achieving sharp puncture. When the steel ball stopper moves to the second stopper hole, the rounded end of the guide needle protrudes from the sling, now used to puncture soft tissues, achieving blunt puncture.

[0032] The elastic traction sling expands after puncture, applying uniform traction to the target tissue through its elastic properties while reducing compressive forces. The water balloon membrane expands after injection of liquid through the water channel, further enhancing the contact area and stability of the traction. The design of the water channel ensures uniform expansion of the water balloon membrane and avoids biased pressure. A clamp secures the entire device to prevent displacement during traction.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A minimally invasive surgical traction suspension fixation device, comprising an outer sleeve (1), an elastic traction sling (2), and a water ball membrane (22), wherein: An elastic traction sling (2) is provided inside the outer sleeve (1), a guide needle (3) is provided inside the elastic traction sling (2), and a clip (4) is provided at one end of the outer sleeve (1); A first limiting hole (11) is provided on one side of the outer sleeve (1), and a second limiting hole (12) is provided on one side of the outer sleeve, wherein the first limiting hole (11) and the second limiting hole (12) are arranged in an array; Water injection channels (21) are provided on both sides of the elastic traction sling (2), and a water ball membrane (22) is provided at one end of the water injection channel (21); A steel ball stopper (31) is provided on one side of the guide needle (3).

2. The minimally invasive surgery traction, suspension and fixation device according to claim 1, characterized in that: The two ends of the elastic traction sling (2) are integrally formed with the water ball membrane (22) via a water injection channel (21), and the inner diameter of the water injection channel (21) is 1.5 mm.

3. The minimally invasive surgery traction, suspension and fixation device according to claim 1, characterized in that: The center distance between the first limiting hole (11) and the second limiting hole (12) is 15 mm. The two limiting holes are evenly distributed in a straight line along the length direction of the outer sleeve (1). The aperture of each limiting hole is 1 mm. The steel ball limiter (31) accurately positions the elastic traction sling (2). When the steel ball limiter (31) is in the position of the first limiting hole (11), the guide needle (3) will not penetrate the front end of the elastic traction sling (2), which is a blunt puncture. The front end of the elastic traction sling (2) punctures the tissue with a pointed structure, which is a sharp puncture.

4. The minimally invasive surgery traction, suspension and fixation device according to claim 1, characterized in that: The steel ball stopper (31) is fixed to the guide needle (3) by press-fitting, the diameter of the steel ball is 1.2 mm, and the surface of the steel ball is provided with an anti-slip texture.

5. The minimally invasive surgery traction, suspension and fixation device according to claim 1, characterized in that: Reinforced fiber layers are embedded in both sides of the elastic traction sling (2); the reinforced fiber layers and the elastic traction sling (2) are integrally molded; and the thickness of the reinforced fiber layers is 0.2 mm.

6. The minimally invasive surgery traction, suspension and fixation device according to claim 1, characterized in that: The water ball membrane (22) is made of a double-layer medical silica gel material, with a filling cavity provided between the inner and outer layers, the filling cavity being connected to the elastic traction sling (2) via a water injection channel (21), and the maximum expansion diameter of the filling cavity being 30 mm.

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