Instrument channel capable of achieving multi-angle deformation

Abstract

The invention relates to an instrument channel capable of realizing multi-angle deformation, which is used for being matched with a hard core rod to be used as a puncture outfit, and a main body is a deformable sheath tube; the deformable sheathing canal comprises a sheathing canal head, a flexible sheathing canal and a sheathing canal tail which are sequentially connected from top to bottom, and the flexible sheathing canal is made of a soft material; a plurality of sheathing canal supporting rings which are sequentially arranged from top to bottom are attached to the inner wall of the flexible sheathing canal. Compared with the prior art, the device has the unique advantage of super-large bendable angle, in the operation process, an operator can adjust the position and direction of entering an instrument according to the actual scene requirement, the device is not affected by the straight-in and straight-out form of a traditional puncture sheath, the device can be adjusted to the designated position more flexibly in the operation application process, and therefore the operation difficulty is reduced, and the operation time is shortened.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an instrument channel capable of realizing multi-angle deformation. Background Art

[0002] As laparoscopic surgery continues to develop, the performance of the trocar, a key instrument for establishing a surgical access channel, is crucial to the smooth progress of the operation. Traditional laparoscopic trocars usually have a fixed shape and structure, which has many limitations in actual use.

[0003] Traditional puncture sheaths are generally rigid straight tube structures with a fixed inner diameter and a single shape. After the puncture is completed, it is difficult to flexibly adjust the puncture channel according to the actual needs of the operation, such as changing the shape of the puncture channel to accommodate the entry and exit of different instruments, etc., so it cannot better meet the needs of surgical operations. The limitations of traditional puncture sheaths are particularly obvious in scenarios involving use with curved staplers or other special-shaped instruments. Currently, in operations such as laparoscopic gastrointestinal anastomosis that require the use of curved staplers, traditional rigid straight tube puncture sheaths are obviously unable to adapt to the curved shape of the curved stapler.

[0004] When using a traditional linear cutting stapler, the surgeon often needs to insert the stapler into the puncture channel and compare the tissues to be anastomosed in different directions in order to find the most appropriate anastomotic position. The traditional rigid straight tube puncture sheath is inserted into the abdominal wall, and its position is fixed and the swing range is limited. This limits the surgeon's anastomotic adjustment operation and makes it impossible to find the optimal anastomotic angle. The need to adjust the puncture angle multiple times during the operation not only increases the anesthesia and surgical duration, but may also cause iatrogenic damage to surrounding tissues, leading to longer hospital stays and increased costs.

[0005] During puncture, when a rigid trocar passes through thick or tough tissue, the friction between the trocar and the tissue is high, which not only increases the difficulty for the surgeon but also may cause the puncture path to deviate, affecting the accuracy of the procedure. Reducing the friction between the trocar and the tissue can reduce tissue damage to the patient and reduce the resistance to puncture for the surgeon. Summary of the Invention

[0006] The purpose of this invention is to provide an instrument channel that can achieve multi-angle deformation. This allows for flexible shape changes according to actual needs during surgery, accurately reaching the target puncture site, and reducing damage to surrounding tissue. Furthermore, the puncture channel can be automatically adjusted to accommodate the entry and exit of various instruments, especially special-shaped instruments such as curved staplers, to better meet the needs of surgical operations. This reduces surgical difficulty and improves surgical accuracy, safety, and efficiency.

[0007] The present invention is achieved through the following technical solutions: an instrument channel capable of multi-angle deformation, used in conjunction with a hard core rod to serve as a puncture device, the main body of which is a deformable sheath; the deformable sheath comprises a sheath head, a flexible sheath, and a sheath tail connected in sequence from top to bottom, and the flexible sheath is made of soft material;

[0008] The inner wall of the flexible sheath is provided with a plurality of sheath support rings arranged in sequence from top to bottom.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The present invention has the unique advantage of an ultra-large bending angle. During the operation, the surgeon can adjust the position and direction of the entry instrument according to the actual scene requirements. It is not affected by the straight-in and straight-out form of the traditional puncture sheath. During the operation, it can be adjusted to the specified position more flexibly, thereby reducing the difficulty of the operation and shortening the operation time.

[0011] 2. During the puncture process, the characteristics of the flexible sheath of the present invention can avoid excessive squeezing and forced advancement of tissues by traditional fixed-shape puncture devices, thereby greatly reducing damage to surrounding tissues. This not only helps to reduce the patient's postoperative pain level, but also accelerates wound healing and reduces the incidence of complications such as infection, allowing patients to recover faster and alleviating their pain and financial burden.

[0012] 3. The puncture channel can be adjusted according to surgical requirements. During actual surgery, different types of instruments may need to be used to enter and exit the puncture channel at different stages, especially special-shaped instruments such as curved staplers. The fixed channel of traditional puncture instruments is difficult to adapt to the passage of these special instruments. However, the present invention can flexibly change the shape and size of the puncture channel, providing a smooth entry and exit channel for various instruments, ensuring the consistency and efficiency of surgical operations. This dynamic adjustment capability of the puncture channel effectively solves the difficulties of existing technologies when dealing with complex instruments and better meets the diverse needs of surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 Schematic diagram of the structure of the hard core rod;

[0015] Figure 3 Schematic diagram of the overall structure of the deformable sheath;

[0016] Figure 4 Schematic diagram of the disassembled structure of the deformable sheath;

[0017] Figure 5 It is a structural diagram of the limiter;

[0018] Figure 6 This is a rendering of the arc-shaped instrument as it prepares to enter the present invention;

[0019] Figure 7 This is the effect diagram when the arc-shaped instrument just enters the present invention;

[0020] Figure 8 This is a rendering of the arc-shaped instrument fully entering the present invention;

[0021] Figure 9 Schematic diagram of the bending effect of the deformable sheath after the arc-shaped instrument is completely inserted into the deformable sheath;

[0022] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure of the flexible sheath and the sheath support ring in the neutral state;

[0023] Figure 11 This is a schematic diagram of the effect of an arc-shaped instrument passing through the present invention;

[0024] Figure 12 A comparison diagram of the swing angles of the prior art and the present invention;

[0025] Figure 13 This is a rendering of the effect of limiting the deformable sheath through the cooperation of the limiter 3 and the balloon 4.

[0026] Explanation of reference numbers: 1 rigid core rod, 11 core rod head, 12 puncture core rod, 2 deformable sheath, 21 sheath head, 22 flexible sheath, 23 sheath tail, 24 sheath support ring, 3 limiter. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings, but the protection content of the present invention is not limited to the following:

[0028] like Figures 1 to 10 As shown, an instrument channel capable of multi-angle deformation is used in conjunction with a hard core rod 1 to be used as a puncture device. The main body is a deformable sheath 2; the deformable sheath 2 includes a sheath head 21, a flexible sheath 22, and a sheath tail 23 connected in sequence from top to bottom, and the flexible sheath 22 is made of soft material;

[0029] The inner wall of the flexible sheath 22 is provided with a plurality of sheath support rings 24 arranged in sequence from top to bottom.

[0030] It should be noted that the purpose of the present invention is to provide an instrument channel that can achieve multi-angle deformation. It can flexibly change shape according to actual needs during surgery, accurately reach the target puncture location, and reduce damage to surrounding tissues. At the same time, the puncture channel can be automatically adjusted according to the needs of different surgical instruments to accommodate the entry and exit of different instruments, especially special-shaped instruments such as curved staplers, to better meet the needs of surgical operations. This reduces surgical difficulty and improves surgical accuracy, safety, and efficiency.

[0031] The sheath support ring 24 is made of a hard material and serves as a reinforcement structure for the flexible sheath 22. Specifically, the sheath support ring can be made of PC, or hard plastic or metal. This design is a conventional technical means, so it will not be described in detail.

[0032] Furthermore, any two adjacent sheath tube support rings 24 are overlapped and matched. Here, the length requirements of flexible sheath tubes 22 of different specifications can be adapted by increasing the number of sheath tube support rings 24.

[0033] Furthermore, a limiter 3 is provided on the outer periphery of the flexible sheath 22 .

[0034] It should be noted that, during use, the operator can adjust the length of the present invention entering the body according to needs, and then adjust the position of the limiter 3 and sew the limiter 3 outside the human skin so that the deformable sheath 2 can be fixed in position to form a stable instrument channel; Figure 13 As shown, the surgeon can also use the existing balloon 4 structure to allow the balloon 4 structure to enter the human body together with the present invention, and then inflate the balloon 4 to make it expand, and then adjust the limit according to the thickness of the human tissue to fix the position of the deformable sheath 2.

[0035] Furthermore, the hard core rod 1 includes a core rod head 11 arranged at the top and a puncture core rod 12 connected to the lower end of the core rod head 11 and extending downward; after the puncture core rod 12 passes through the deformable sheath 2, the core rod head 11 can overlap and cooperate with the sheath head 21.

[0036] At the beginning of the procedure, the rigid core rod and the deformable sheath are combined. The deformable sheath, influenced by the rigid straight rod properties of the rigid core rod, forms a rigid trocar with the characteristics of a traditional trocar. This invention enables smooth and rapid entry into human tissue. The rigid core rod is then removed, and the deformable sheath establishes the surgical access channel. It should be noted that the flexible sheath, made of a soft material, reduces frictional damage to the tissue during the puncture process.

[0037] Furthermore, the flexible sheath 22 is made of silicone or TPU material.

[0038] It should be noted that the sheath support ring 24 can be made of PC material, or it can be made of hard plastic or metal material; the material of the sheath head 21 and the sheath tail 23 can be designed according to demand, and the material of the sheath head 21 and the sheath tail 23 can be the same as that of the flexible sheath 22, or the same as that of the sheath support ring 24.

[0039] When arc-shaped instruments or special-shaped instruments are needed during surgery, the arc-shaped instruments or special-shaped instruments enter the whole process of the present invention as follows: Figure 6-Figure 8 As shown in the figure, in this process, the curved instrument or special-shaped instrument first passes through the sheath head and then enters the sheath support ring part:

[0040] like Figure 9 and Figure 10 As shown, due to the flexible sheath wrapped around the sheath support ring, when a curved instrument enters the sheath support ring, a certain angle is formed between each two adjacent sheath support rings. In other words, a fulcrum is formed between each two adjacent sheath support rings. This creates a deformation angle that matches the passage of the curved instrument within the sheath support ring, between the sheath support rings, and throughout the flexible sheath. During this process, the flexible sheath, made of soft material, plastically deforms as the sheath support rings are stretched at the deformation angle. This creates a channel that matches the shape of the curved or shaped instrument. The sheath support rings are only wrapped by the flexible sheath, and there is no fixed connection between the sheath support rings. Curved or shaped instruments can enter the sheath channel freely without being affected by the bending angle of the instrument.

[0041] like Figure 11 As shown, finally, if the front-end arc-shaped part or the irregular part of the arc-shaped instrument or the irregular-shaped instrument completely passes through the present invention and enters the patient's body, the deformable sheath will gradually return to a straight shape.

[0042] like Figure 12 The following comparison shows the swing angle achieved by a conventional instrument inserted into a trocar on the left, and the swing angle achieved by the instrument inserted into the present invention on the right. It is clear that the present invention provides a swing angle far greater than that of conventional instruments. The swing angle of the present invention is affected by the length and diameter of the flexible sheath 22. In a test using a conventional trocar with a diameter of 12 mm and a length of 100 mm, a trocar with a length of 5 mm was inserted. The maximum swing angle of the instrument within the conventional straight trocar was approximately 10-15°, while within the present invention, the maximum swing angle reached 40-45°.

[0043] Although the present invention is illustrated and described using specific embodiments and their alternatives, it should be understood that various changes and modifications can be implemented without departing from the spirit and scope of the present invention. Therefore, it should be understood that the present invention is not limited in any sense except by the limitations of the appended claims and their equivalents.

Claims

1. An instrument channel capable of multi-angle deformation, used in conjunction with a hard core rod to serve as a trocar, characterized by: The main body is a deformable sheath (2); the deformable sheath (2) comprises a sheath head (21), a flexible sheath (22), and a sheath tail (23) connected in sequence from top to bottom, and the flexible sheath (22) is made of a soft material; The inner wall of the flexible sheath (22) is provided with a plurality of sheath support rings (24) arranged in sequence from top to bottom.

2. The instrument channel capable of multi-angle deformation according to claim 1, characterized in that: The sheath support ring (24) is made of hard material and serves as a reinforcement structure of the flexible sheath (22).

3. The instrument channel capable of multi-angle deformation according to claim 1, characterized in that: Any two adjacent sheath tube support rings (24) are overlapped and matched.

4. The instrument channel capable of multi-angle deformation according to claim 1, characterized in that: A stopper (3) is provided on the outer periphery of the flexible sheath tube (22).

5. The instrument channel capable of multi-angle deformation according to claim 1, characterized in that: The hard core rod (1) comprises a core rod head (11) arranged at the top and a puncture core rod (12) connected to the lower end of the core rod head (11) and extending downward; after the puncture core rod (12) passes through the deformable sheath (2), the core rod head (11) can overlap and cooperate with the sheath head (21).

6. The instrument channel capable of multi-angle deformation according to claim 1, characterized in that: The flexible sheath (22) is made of silicone or TPU material.

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