Bendable puncture outfit sheathing canal

Abstract

The utility model relates to a bendable puncture outfit sheathing canal which comprises an outer sheathing head and an outer sheathing canal body, and the outer sheathing canal body is connected to the lower end of the outer sheathing head and extends downwards in the vertical direction. The main body of the outer sheath tube is a flexible straight tube made of a deformation material, so that the outer sheath tube can be bent under external force; the flexible straight pipe is provided with an anti-deformation supporting piece which is in a nesting relation or is integrally formed with the flexible straight pipe, so that the situation that an internal channel of the flexible straight pipe is narrowed due to the fact that the flexible straight pipe is subjected to external force is prevented. Due to the bendable design, the laparoscopic surgery sheath has higher flexibility, can better allow arc-shaped or special-shaped instruments to pass through, better meets the requirements of laparoscopic surgery, reduces the risk and difficulty of the surgery, can be deformed and bent, can meet the requirement that the sheath tube is not pressed by human tissues, and is convenient to use. And arc-shaped or special-shaped instruments can pass through.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a flexible puncture sheath. Background Technology

[0002] Currently, most trocars on the market use a rigid, straight-bar outer sheath design with no adjustable angle, thus limiting their applicability to straight-bar laparoscopic instruments. However, for newer laparoscopic instruments, such as arc-shaped anastomosing devices, existing rigid, straight-bar trocars cannot be inserted. In such cases, it is necessary to seek assistance from other devices or switch to straight-bar instruments.

[0003] In summary, the existing technology has the following two drawbacks:

[0004] ① For new laparoscopic instruments, such as arc-shaped staplers, the front end of the trocar is generally designed as a rigid straight rod, which cannot be bent or deformed. This makes it difficult for any curved or irregularly shaped medical laparoscopic instrument to pass through the trocar channel, and it is not applicable to any curved or irregularly shaped medical laparoscopic instrument.

[0005] ② Existing rigid straight rod trocars have outer sheaths made of rigid materials, which may cause the operator to accidentally damage tissue during operation, resulting in unnecessary losses. Utility Model Content

[0006] The purpose of this invention is to provide a flexible trocar sheath that provides a more advanced, safer, and more efficient trocar tool, and is compatible with various non-standard instruments to meet the needs of laparoscopic surgery.

[0007] This utility model is achieved through the following technical solution: a flexible puncture sheath, including an outer sheath head and an outer sheath tube, the outer sheath tube being connected to the lower end of the outer sheath head and extending downward in a vertical direction;

[0008] The main body of the outer sheath is a flexible straight tube made of deformable material, which allows the outer sheath to bend under external force. The flexible straight tube is provided with anti-deformation support members that are nested with or integrally formed with the flexible straight tube to prevent the internal channel of the flexible straight tube from narrowing due to external force.

[0009] Compared with previous technologies, the beneficial effects of this utility model are as follows:

[0010] 1. This flexible design gives the present invention greater flexibility, allowing curved or irregularly shaped instruments to pass through more easily, better meeting the needs of laparoscopic surgery, and reducing the risks and difficulties of surgery. It also allows the present invention to be deformable and flexible while ensuring that the sheath is not pressed by human tissue, thus allowing curved or irregularly shaped instruments to pass through.

[0011] 2. The outer sheath of this utility model is a flexible straight tube made of deformable material, which can reduce tissue damage caused by puncture sheath. Attached Figure Description

[0012] Figure 1 This is a diagram illustrating the connection effect of this utility model when used in conjunction with an arc-shaped stapler.

[0013] Figure 2 This is a bending effect diagram of the outer sheath tube of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of Example 1;

[0015] Figure 4 This is a schematic cross-sectional view of Example 1;

[0016] Figure 5 This is a schematic diagram of the outer sheath tube in Example 1;

[0017] Figure 6 This is a schematic diagram of the structure of Example 2;

[0018] Figure 7 This is a cross-sectional structural diagram of Example 2;

[0019] Figure 8 This is a schematic diagram of the outer sheath tube in Example 2;

[0020] Figure 9 This is a schematic diagram of the structure of Example 3;

[0021] Figure 10 This is a schematic cross-sectional view of Example 3;

[0022] Figure 11 This is a schematic diagram of the outer sheath tube in Example 3;

[0023] Figure 12 This is a schematic diagram of the outer sheath tube in Example 4;

[0024] Figure 13 This is an exploded view of the outer sheath head, the puncture cover, and the steam injection valve.

[0025] Labeling explanation: 1 Outer sheath head, 2 Outer sheath tube, 21 Spring, 22 Deformation tube, 221 Left and right notches, 222 Front and rear notches, 23 Deformation layer, 231 Left and right grooves, 232 Front and rear grooves, 3 Anti-slip texture, 4 Puncture cap, 5 Steam injection valve, 9 Arc-shaped anastomosis device. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:

[0027] like Figures 1 to 13As shown, a flexible puncture sheath includes an outer sheath head 1 and an outer sheath tube, the outer sheath tube being connected to the lower end of the outer sheath head 1 and extending downward in a vertical direction.

[0028] The main body of the outer sheath is a flexible straight tube 2 made of deformable material, allowing it to bend under external force. The flexible straight tube 2 is equipped with a deformation-resistant support component that is nested within or integrally formed with the flexible straight tube to prevent narrowing of its internal passage under external force. The purpose of this invention is to address the shortcomings of rigid straight-rod trocars in surgical procedures using non-standard instruments, including the risk of injury, inconvenience of operation, difficulty in adjustment, and the inability to pass non-standard instruments. The flexible design of the outer sheath allows for better passage of curved or non-standard instruments, providing more stable and precise fixation, reducing the risk of injury during operation, and improving operational flexibility and convenience.

[0029] This flexible design gives the invention greater flexibility, allowing curved or irregularly shaped instruments to pass through more easily, better meeting the needs of laparoscopic surgery, and reducing the risks and difficulties of the surgery. It also allows the sheath to be deformable and flexible without being pressed by human tissue, thus accommodating the passage of curved or irregularly shaped instruments.

[0030] Example 1:

[0031] like Figures 3 to 5 As shown, the anti-deformation support is a spring 21, which is embedded in the inner wall of the flexible straight tube 2; anti-slip texture 3 is provided on the outer wall of the flexible straight tube 2.

[0032] It should be noted that the spring 21 is pre-filled during the manufacturing process of the flexible straight tube 2, and its structure is very stable, thus meeting the requirements for the entry of the arc-shaped instrument. While the outer sheath tube deforms with the arc-shaped instrument, the spring 21 meets the requirement of deformability and also has sufficient strength to support the deformation of the outer sheath tube, so as to prevent the flexible straight tube 2 from being narrowed by external force.

[0033] Example 2:

[0034] like Figures 6 to 8 As shown, the anti-deformation support is a deformation tube 22 sleeved on the outer periphery of the flexible straight tube 2. The deformation tube 22 includes multiple sets of left and right notches 221 provided along the extension direction of the deformation tube 22, and front and rear notches 222 opened between any two sets of adjacent left and right notches 221. The left and right notches 221 are arc-shaped notches A respectively provided on the left and right sides of the deformation tube 22 and are not connected to each other. The front and rear notches 222 are arc-shaped notches B respectively provided on the front and rear sides of the deformation tube 22 and are not connected to each other.

[0035] The left and right notches 221 and the front and rear notches 222 create anti-slip texture 3 on the outer periphery of the flexible straight tube 2.

[0036] It should be noted that the deformation tube 22 is used here to support the flexible straight tube 2 and prevent it from deforming, thus preventing it from being flattened in the instrument channel. The arc-shaped notches A and B provide some space for the deformation of the flexible straight tube 2, preventing the internal channel of the flexible straight tube 2 from narrowing due to external forces.

[0037] Example 3:

[0038] like Figures 9 to 11 As shown, the anti-deformation support is a deformation layer 23 located on the outer periphery of the flexible straight tube 2 and integrally formed with the flexible straight tube 2; the deformation tube 22 is provided with multiple sets of left and right grooves 231 arranged in the extension direction of the deformation tube 22 and front and rear grooves 232 opened between any two sets of adjacent left and right grooves 231; the left and right grooves 231 are arc-shaped grooves A respectively arranged on the left and right sides of the deformation layer 23 and not connected to each other; the front and rear grooves 232 are arc-shaped grooves B respectively arranged on the front and rear sides of the deformation tube 22 and not connected to each other.

[0039] Example 4:

[0040] like Figure 12 As shown, the anti-deformation support is a deformation layer 23 located on the outer periphery of the flexible straight tube 2 and integrally formed with the flexible straight tube 2; the difference from embodiment 3 is that the deformation tube 22 is provided with multiple sets of annular grooves arranged in the extension direction of the deformation tube 22, so that several annular anti-slip teeth 233 are formed on the surface of the deformation tube 22.

[0041] Adding annular grooves and forming anti-slip teeth 233 improves the anti-slip ability of the deformation tube 22.

[0042] It should be noted that the outer sheath tube in this embodiment has a design with varying thicknesses. The flexible straight tube 2 material of the outer sheath tube itself can provide deformation capability, and the design of the arc-shaped grooves A and B within it achieves a structure with varying thicknesses to provide the ability to prevent excessive deformation, thus providing better deformation capability and preventing the internal channel of the flexible straight tube 2 from narrowing due to external forces.

[0043] It should be noted that the flexible straight tube 2 can be made of a flexible material similar to that used for drainage tubes, with a Shore hardness of 40-100. The deformation layer 23 and the deformation tube can be made of the same medical-grade plastic as traditional outer sheath tubes. The spring 21 can be made of common medical-grade metal.

[0044] In addition, the outer sheath head 1 is generally integrally formed with the flexible straight tube 2, so the outer sheath head 1 is also made of a flexible material similar to the drainage tube, and the Shore hardness of the material is 40-100 degrees.

[0045] like Figure 12As shown: A puncture cap 4 is connected and installed at the top of the outer sheath head 1, and a steam injection valve 5 is connected to the side of the outer sheath head 1. The puncture cap 4 and the steam injection valve 5 are formed separately from the outer sheath head 1, and are installed on the outer sheath head 1 through an assembly line operation.

[0046] In use, insert the present invention into the instrument channel, then connect the curved instrument or irregularly shaped instrument to the present invention through the instrument channel, and adjust the position and angle of the curved instrument to begin the surgery.

[0047] Although this utility model has been illustrated and described using specific embodiments and alternative methods, it should be understood that various changes and modifications are permitted as long as they do not depart from the spirit and scope of this utility model. Therefore, it should be understood that this utility model is not limited in any sense except by the appended claims and their equivalents.

Claims

1. A flexible puncture device sheath, characterized in that: It includes an outer sheath head (1) and an outer sheath tube, the outer sheath tube being connected to the lower end of the outer sheath head (1) and extending downward in a vertical direction; The main body of the outer sheath is a flexible straight tube (2) made of deformable material, which allows the outer sheath to bend under external force. The flexible straight tube (2) is provided with a deformation-resistant support that is nested with or integrally formed with the flexible straight tube, so as to prevent the internal channel of the flexible straight tube (2) from narrowing due to external force.

2. The flexible puncture device sheath according to claim 1, characterized in that: The anti-deformation support is a spring (21), which is embedded in the inner wall of the flexible straight tube (2); anti-slip texture (3) is provided on the outer wall of the flexible straight tube (2).

3. The flexible puncture device sheath according to claim 1, characterized in that: The anti-deformation support is a deformation tube (22) sleeved on the outer periphery of the flexible straight tube (2). The deformation tube (22) includes multiple sets of left and right notches (221) provided along the extension direction of the deformation tube (22) and front and rear notches (222) opened between any two sets of adjacent left and right notches (221). The left and right notches (221) are arc-shaped notches A respectively provided on the left and right sides of the deformation tube (22) and are not connected to each other. The front and rear notches (222) are arc-shaped notches B respectively provided on the front and rear sides of the deformation tube (22) and are not connected to each other. The left and right notches (221) and the front and rear notches (222) form anti-slip texture (3) on the outer periphery of the flexible straight tube (2).

4. The flexible puncture device sheath according to claim 1, characterized in that: The anti-deformation support is a deformation layer (23) located on the outer periphery of the flexible straight tube (2) and integrally formed with the flexible straight tube (2).

5. The flexible puncture device sheath according to claim 4, characterized in that: The deformation tube (22) is provided with multiple sets of left and right grooves (231) arranged in the extension direction of the deformation tube (22) and front and rear grooves (232) opened between any two sets of adjacent left and right grooves (231); the left and right grooves (231) are arc-shaped grooves A respectively arranged on the left and right sides of the deformation layer (23) and not connected to each other; the front and rear grooves (232) are arc-shaped grooves B respectively arranged on the front and rear sides of the deformation tube (22) and not connected to each other.

6. The flexible puncture device sheath according to claim 4, characterized in that: The deformation tube (22) is provided with multiple sets of annular grooves arranged in the extension direction of the deformation tube (22), so that several annular anti-slip teeth (233) are formed on the surface of the deformation tube (22).

7. A flexible puncture device sheath according to any one of claims 1-6, characterized in that: The material used in the flexible straight tube (2) has a Shore hardness of 40-100 degrees.

8. The flexible puncture device sheath according to claim 7, characterized in that: The outer sheath head (1) is integrally formed with the flexible straight tube (2), and the material used for the outer sheath head (1) has a Shore hardness of 40-100 degrees.

9. The flexible puncture device sheath according to claim 1, characterized in that: A puncture cap (4) is connected to the top of the outer sheath head (1), and a steam injection valve (5) is connected to the side of the outer sheath head (1).

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