Traction suspension fixing device for minimally invasive surgery

Abstract

The utility model 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 utility model, the flexible switching between a sharp puncture mode and a blunt puncture mode is realized through the interaction of the elastic traction sling and the limiting hole, 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 utility model discloses medical equipment auxiliary field, specifically is minimally invasive surgery pull suspension fixing device. BACKGROUND

[0002] In modern minimally invasive surgery, pulling and suspending tissues is an important step of surgical operation, especially in laparoscopic surgery, pulling devices are widely used to stabilize the position of target tissues so that surgeons can clearly expose the surgical field and perform subsequent operations. Currently, minimally invasive surgical devices are developing towards multifunctional, precise and safe, among which devices integrated with pulling, suspending and fixing functions are favored by surgeons because they can reduce surgical trauma and improve operational flexibility. The existing minimally invasive liver suspension device for laparoscopic surgery (publication number: CN217886088U) has the following disadvantages and needs further improvement.

[0003] The device adopts a rigid design, and the pulling method for the target tissue is relatively single, which can easily cause excessive compression or damage to soft tissues. Secondly, the traditional device lacks flexible puncture mode, and cannot switch between sharp and blunt puncture modes according to different tissue characteristics, resulting in low operation 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 falls off or slides accidentally, the tissue position is unstable, which seriously affects the safety and accuracy of the operation. Therefore, there is an urgent need for a multifunctional suspension device with elastic pulling capacity, double puncture mode switching and tissue protection function. SUMMARY

[0004] The main purpose of the utility model is to provide minimally invasive surgery pull suspension fixing device, can effectively solve the problem in the background art.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of minimally invasive surgery pull suspension fixing device.

[0006] The outer sleeve is provided with an elastic traction sling inside, the elastic traction sling is provided with a guide needle inside, one end of the outer sleeve is provided with a clip;

[0007] The outer sleeve is provided with a first limiting hole on one side, the outer sleeve is provided with a second limiting hole on one side, the first limiting hole and the second limiting hole adopt array layout;

[0008] The elastic traction sling is provided with a water injection channel on both sides, and the water injection channel is provided with a water ball membrane at one end.

[0009] The guide needle is provided with a steel ball limiter on one side.

[0010] Preferably, the two ends of the elastic traction sling are integrally formed with the water balloon membrane through the water injection channel, and the inner diameter of the water injection channel is 1.5 mm.

[0011] Preferably, the center distance between the first limiting hole and the second limiting hole is 15 mm, and the two limiting holes are uniformly distributed in a straight line along the length direction of the outer sleeve. The diameter of each limiting hole is 1 mm, the steel ball positioner precisely positions the elastic traction sling, and when the steel ball positioner is in the first limiting hole position, the guide needle cannot penetrate the front end of the elastic traction sling, which is a blunt puncture. The front end of the elastic traction sling has a sharp structure to puncture the tissue, which is a sharp puncture.

[0012] Preferably, the steel ball positioner is fixed on 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 anti-skid texture.

[0013] Preferably, the two sides of the elastic traction sling are embedded with a reinforcing fiber layer, the reinforcing fiber layer is integrally molded with the elastic traction sling, and the thickness of the reinforcing fiber layer is 0.2 mm.

[0014] Preferably, the water balloon membrane is made of double-layer medical silica gel material, a filling cavity is arranged between the inner and outer layers, the filling cavity is connected with the elastic traction sling through the water injection channel, and the maximum expansion diameter of the filling cavity is 30 mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The device provides stable support for the whole device by integrating the elastic traction sling through the outer sleeve. The elastic traction sling is made of flexible material, which can achieve gentle tissue traction and avoid the compression or damage of soft tissue caused by traditional rigid design. At the same time, the first limiting hole and the second limiting hole cooperate to realize the flexible switching of the sharp puncture head and the blunt puncture head, so as to adapt to the puncture demand of different tissue types and improve the adaptability and safety of the operation.

[0017] The device injects liquid into the water balloon string through the water injection channel, so that the water balloon string expands to form a flexible buffer structure, thereby improving the fixation force of the suspension device on the tissue and reducing the risk of slipping. The double-layer design of the water balloon string and the arc protection of the blunt puncture head further improve the tissue protection capability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic diagram of the utility model;

[0019] Figure 2 It is a whole structure explosion diagram of the utility model;

[0020] Figure 3 It is a whole structure A section view of the utility model;

[0021] Figure 4 It is the un-inflated structure schematic view of the elastic traction sling water ball membrane of the utility model;

[0022] Figure 5 It is the inflated structure schematic view of the elastic traction sling water ball membrane of the utility model;

[0023] Figure 6 It is the cross-sectional view of the water injection channel of the elastic traction sling of the utility model;

[0024] Figure 7 It is the guide needle structure schematic view of the utility model;

[0025] Figure 8 It is the whole blunt puncture schematic view of the utility model;

[0026] Figure 9 It is the whole sharp puncture schematic view of the utility model.

[0027] 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, clamp. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0029] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the utility model, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. EMBODIMENT

[0031] Please refer to Figures 1-6 The utility model provides a technical scheme:

[0032] 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, one end of the outer sleeve 1 is provided with a clip 4;

[0033] One side of the outer sleeve 1 is provided with a first limiting hole 11, one side of the outer sleeve is provided with a second limiting hole 12, the first limiting hole 11 and the second limiting hole 12 adopt array layout;

[0034] The elastic traction sling 2 is provided with a water injection channel 21 on both sides, and the water injection channel 21 is provided with a water ball membrane 22 at one end;

[0035] The guide needle 3 is provided with a steel ball limiter 31 on one side.

[0036] The outer sleeve is made of medical-grade stainless steel material, and the inner diameter is closely matched with the outer diameter of the elastic traction sling, so that precise guidance is realized by reducing the gap. The outer sleeve is provided with a clip at one end, which is used to fix the device in the operation area, so as to ensure that the device will not be displaced during use. The outer sleeve is provided with a first limiting hole and a second limiting hole on one side, which are arranged in an array. The steel ball limiter adjusts the puncture state of the guide needle through the position of the limiting hole, so that the device can be flexibly switched between blunt puncture and sharp puncture.

[0037] The elastic traction sling is made of rubber and embedded with a reinforced fiber layer to increase the tensile strength. The inside is designed with a water injection channel and a guide needle, the water injection channel is connected with the water ball membrane at one end and is connected with the water injection equipment at the other end. The design of the water injection channel ensures the uniform distribution of the liquid, so that the water ball membrane can expand rapidly and uniformly. The guide needle is made of high-strength alloy steel, and one end of the guide needle is connected with the steel ball limiter. The steel ball limiter is fixed on the guide needle by press fitting, and the surface of the steel ball is provided with anti-skid texture, which is closely matched with the limiting hole of the outer sleeve to provide accurate positioning.

[0038] The center distance between the first limiting hole and the second limiting hole is 15 mm, and the hole diameter is 1 mm. The diameter of the steel ball limiter is 1.2 mm, which can accurately limit the position of the guide needle, so that the guide needle can be in a blunt or sharp puncture state. The front end of the elastic traction sling is designed as a sharp structure, which is used for sharp puncture, and when the round head of the guide needle protrudes, the front end of the sling realizes blunt puncture by pushing and extruding soft tissue.

[0039] The water balloon membrane is made of double-layer medical silicone material, and the 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 through the water injection channel. In the unexpanded state, the softness and low pressure of the water balloon membrane can smoothly pass through the tissue gap without causing damage.

[0040] The water balloon membrane expands after injecting physiological saline through the water injection channel, with a maximum expanded diameter of 30 mm. The spherical structure after expansion increases the contact area with the target tissue, thereby dispersing the traction force and protecting the tissue from concentrated pressure damage. The water balloon membrane expands and cooperates with the elastic traction sling to perform large-area traction on the target tissue, reducing the pressure on a single area.

[0041] The inner diameter of the water injection channel is 1.5 mm, and it is connected to the external water injection equipment. The smooth inner wall design of the channel ensures the rapid flow of liquid while avoiding the problem of blockage caused by liquid stagnation. The water injection channel, as the only channel for the expansion of the water balloon membrane, has an accurate size design that ensures the speed and uniformity of water injection, allowing the water balloon membrane to expand rapidly and achieve stable traction effect.

[0042] The front end of the guide needle is designed as a round head with a radius of 0.3 mm for blunt puncture. The rear end is connected to the steel ball positioner through threads, ensuring the stability of the guide needle. The guide needle can switch between puncture modes through the position adjustment of the steel ball positioner. When the steel ball positioner is in the first limiting hole, the guide needle is completely hidden inside the elastic traction sling; when it is in the second limiting hole, the round head end protrudes for blunt puncture.

[0043] When the steel ball positioner is in the second limiting hole position, the round head of the guide needle protrudes from the front end of the elastic traction sling. Due to the large curvature of the round head, the main force applied to the soft tissue during blunt puncture is a pushing force rather than a cutting force, thereby reducing the risk of tissue damage. Blunt puncture is suitable for soft tissues such as fat layers or nerve tissues, effectively avoiding tissue tearing.

[0044] When the steel ball positioner is in the first limiting hole position, the guide needle is restricted inside the elastic traction sling, and the sharp end of the sling serves as the puncture body, cutting and puncturing the target tissue through its sharp structure. Sharp puncture is suitable for harder tissues such as fascia or aponeurosis, allowing for penetration of the tissue with less force and improving surgical efficiency.

[0045] The outer sleeve is the main structure of the device, containing the elastic traction sling and the guide needle inside. The elastic traction sling is arranged along the inner wall of the outer sleeve and made of rubber material, with the guide needle embedded inside to ensure accurate positioning during puncture. The two sides of the elastic traction sling are symmetrically arranged with water injection channels connected to the water balloon membrane. The water injection channels are designed as an integral molding to ensure that the liquid can be uniformly injected into the water balloon membrane.

[0046] The outer sleeve is provided with a first limiting hole and a second limiting hole on one side, and the two holes are arranged along the length direction of the outer sleeve to form an array structure. A steel ball limiter is installed on one side of the guide needle to cooperate with the limiting holes of the outer sleeve to realize positioning and fixing of the guide needle. A clip is fixed on one end of the outer sleeve to realize overall fixing and stabilization of the device.

[0047] The working principle is as follows:

[0048] The puncture process is completed through the cooperation of the guide needle and the elastic traction sling. When the steel ball limiter is positioned in the first limiting hole, the guide needle is limited inside the elastic traction sling, and the sharp front end of the sling is used to penetrate hard tissues to realize sharp puncture. When the steel ball limiter moves to the second limiting hole, the round head end of the guide needle protrudes from the sling, and the round head needle is used for soft tissue puncture to realize blunt puncture.

[0049] The elastic traction sling can be unfolded after puncture, and through the elastic property, it can exert uniform traction force on the target tissue while reducing the pressure on the tissue. The water ball membrane is inflated after liquid is injected through the water injection channel, further enhancing the contact area and stability of traction. The design of the water injection channel ensures that the water ball membrane expands uniformly to avoid the occurrence of bias pressure. The clip is used for overall fixing of the device to ensure that the device will not be displaced during traction.

[0050] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A minimally invasive surgical traction suspension fixing device, comprising a sleeve tube (1), an elastic traction sling (2), and a water balloon membrane (22), characterized in that: the inside of the sleeve tube (1) is provided with the elastic traction sling (2), the inside of the elastic traction sling (2) is provided with a guide needle (3), and one end of the sleeve tube (1) is provided with a clamp (4); one side of the sleeve tube (1) is provided with a first limiting hole (11), and the other side of the sleeve tube is provided with a second limiting hole (12); the first limiting hole (11) and the second limiting hole (12) are arranged in an array; both sides of the elastic traction sling (2) are provided with a water injection channel (21), and one end of the water injection channel (21) is provided with the water balloon membrane (22); and one side of the guide needle (3) is provided with a steel ball limiter (31). Both ends of the elastic traction sling (2) are integrally formed with the water balloon membrane (22) through the water injection channel (21), and the inner diameter of the water injection channel (21) is 1.5 mm. The center distance between the first limiting hole (11) and the second limiting hole (12) is 15 mm, the two limiting holes are uniformly distributed in a straight line along the length direction of the sleeve tube (1), the hole diameter of each limiting hole is 1 mm, the steel ball limiter (31) accurately positions the elastic traction sling (2), the guide needle (3) does not protrude from the front end of the elastic traction sling (2) when the steel ball limiter (31) is located at the position of the first limiting hole (11), which is blunt puncture, and the front end of the elastic traction sling (2) is punctured with a sharp structure, which is sharp puncture. The steel ball limiter (31) is fixed on 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 anti-slip texture. Both sides of the elastic traction sling (2) are embedded with a reinforcing fiber layer, the reinforcing fiber layer and the elastic traction sling (2) are integrally molded, and the thickness of the reinforcing fiber layer is 0.2 mm.

2. The minimally invasive surgical retraction suspension fixation device of claim 1, wherein: The water balloon membrane (22) is made of double-layer medical silica gel material, a filling cavity is arranged between the inner and outer layers, the filling cavity is connected with the elastic traction sling (2) through the water injection channel (21), and the maximum expansion diameter of the filling cavity is 30 mm.

3. The minimally invasive surgical retraction suspension fixation device of claim 1, wherein: ​ 4. The minimally invasive surgical retraction suspension fixation device of claim 1, wherein: ​ 5. The minimally invasive surgical retraction suspension fixation device of claim 1, wherein: ​ 6. The minimally invasive surgical retraction suspension fixation device of claim 1, wherein: ​

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