Sheath tube of puncture outfit

Abstract

The main body of the puncture outfit sheathing canal is a sheathing canal, and the sheathing canal comprises a handheld part which is detachably connected with an air injection valve and is provided with a vertically through channel; the upper end part of the tube body is hermetically connected to the lower end part of the channel of the handheld part, so that the puncture needle can penetrate in from the upper end opening of the channel and penetrate out from the lower end opening of the tube body; wherein the handheld part is made of a plastic material, and the tube body is made of a metal material. Compared with the prior art, the puncture outfit has the beneficial effects that the puncture outfit not only has the advantages of plastic puncture outfit type and fixity, but also has the advantage of small trauma of a metal tube wall.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a puncture sheath. Background Art

[0002] The existing trocars are roughly divided into two categories according to the material of the sheath, namely the reusable metal tube wall type and the disposable plastic type. The trocar mainly consists of the following parts, namely the sheath, the puncture needle, the ventilation valve and the integrated conversion sleeve retractable valve. The defects of these two categories of products on the current market are:

[0003] Reusable metal tube wall products are made of pure metal, so they feel and weigh more than plastic products. During use, the tube wall is too smooth, so the fixation to the abdominal wall is not very reliable and it is easy to slip. In addition, reusable metal puncture devices have electrical conductivity. When the active device comes into contact with the tube body of the sheath, electrical conduction is likely to occur, which may cause unexpected damage.

[0004] Disposable plastic products are superior to reusable metal tube wall products in terms of shape and fixation, but due to injection molding, they inevitably cause greater trauma during surgery and are inferior to thin-walled metal products in terms of healing. Summary of the invention

[0005] The utility model aims to provide a puncture sheath tube, which combines the advantages of two existing mainstream puncture sheath tubes.

[0006] The utility model is realized by the following technical scheme: the main body is a sheath tube 1, and the sheath tube 1 includes

[0007] The hand-held part 11 is detachably connected to the gas injection valve 2 and is provided with a vertically penetrating passage 111;

[0008] The upper end of the tube body 12 is sealed and connected to the lower end of the channel 111 of the hand-held part 11, so that the puncture needle 3 can pass through the upper end opening of the channel 111 and pass through the lower end opening of the tube body 12;

[0009] The handle 11 is made of plastic, and the tube 12 is made of metal.

[0010] Compared with the previous technology, the beneficial effects of the utility model are:

[0011] 1. It not only meets the advantages of plastic trocar type and fixation, but also meets the advantage of small trauma to metal tube wall.

[0012] 2. The outer wall of the tube body is processed into a rough surface, which increases the fixation of the belly wall of the product and also makes the metal tube wall thinner.

[0013] 3. When the incision is too large and needs to be fixed or the doctor needs a positioning ring for puncture buffering, the positioning ring can meet the needs of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of the trocar;

[0015] Figure 2 is a schematic diagram of the structure of the sheath;

[0016] Figure 3 It is a side cross-sectional view of the sheath;

[0017] Figure 4 for Figure 3 A is an enlarged view of the figure.

[0018] Explanation of reference numerals: 1 sheath, 11 hand-held part, 111 channel, 12 tube body, 121 sealing pattern, 13 annular pattern, 14 positioning ring, 2 air injection valve, 3 puncture needle. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings:

[0020] like Figure 1-3 As shown: a puncture sheath, characterized in that: the sheath 1 includes

[0021] The hand-held part 11 is detachably connected to the gas injection valve 2 and is provided with a vertically penetrating passage 111;

[0022] The upper end of the tube body 12 is sealed and connected to the lower end of the channel 111 of the hand-held part 11, so that the puncture needle 3 can pass through the upper end opening of the channel 111 and pass through the lower end opening of the tube body 12;

[0023] The handle 11 is made of plastic, and the tube 12 is made of metal.

[0024] In this case, the hand-held part 11 is made of plastic material, and the tube body 12 is made of metal material, and the two are connected by injection molding or adhesive fixation; as for other parts of the puncture device that cooperate with it, they can be composed of injection molding parts or silicone parts.

[0025] The outer wall surface of the upper end of the tube body 12 is processed with a concave sealing pattern 121, and the sealing pattern 121 is coated with glue. In order to connect the two, injection molding or glue is generally used for connection, among which the glue method is mainly used, which is more convenient to operate and low in cost. In order to ensure the firmness of the glue, the outer wall surface of the upper end of the tube body 12 is processed with a concave sealing pattern 121. The sealing pattern 121 increases the sealing area, achieves a better sealing effect, and its glue coating is more firm. At the same time, the sealing pattern 121 can effectively prevent the intrusion of water mist and avoid rust during the storage of the product.

[0026] The outer wall surface of the tube body 12 is rough. Specifically, the tube body 12 can be processed by sandblasting or knurling to make the surface of the tube body 12 rough. This method not only increases the fixation of the abdominal wall of the product, but also makes the metal tube wall thinner. The tube body here is mostly made of stainless steel.

[0027] The outer wall of the tube body 12 is provided with a plurality of concave or convex annular lines 13, which are arranged in sequence along the axial direction of the tube body 12. The annular lines 13 here can be processed in the later stage, and the annular lines 13 can increase the roughness of the surface of the tube body and can also be used in conjunction with the positioning ring in the later stage.

[0028] The outer periphery of the tube body 12 is provided with a positioning ring 14, and the inner wall of the positioning ring 14 is provided with a limiting structure that cooperates with the annular pattern 13. For example, at the beginning of the operation, if the incision is too large and needs to be fixed or the doctor needs the positioning ring 14 for puncture buffering, the positioning ring 14 can meet the needs of the operator. The positioning ring here is also provided with two hanging ears to facilitate suture operation.

[0029] The outer wall and / or inner wall of the tube body 12 are coated with an insulating layer. The metal tube portion is partially insulated by adding an insulating coating, such as a Teflon coating, which not only ensures that it is less invasive than a conventional plastic puncture cannula, but also further improves the electrical conduction problem of the repetitive instrument.

[0030] The sheath tube of the utility model is not much different from the sheath tube of the traditional puncture device in terms of usage, so it will not be described in detail.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper end", "lower end", "up", "down", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Although the utility model uses specific embodiments and their alternatives to illustrate and describe the utility model, it should be understood that various changes and modifications can be implemented as long as they do not deviate from the spirit and scope of the utility model. Therefore, it should be understood that except for the limitations of the attached claims and their equivalents, the utility model is not limited in any sense.

Claims

1. A puncture sheath, characterized in that: The main body is a sheath tube (1), and the sheath tube (1) comprises A hand-held part (11) is detachably connected to the gas injection valve (2) and is provided with a vertically penetrating passage (111); The upper end of the tube body (12) is sealedly connected to the lower end of the channel (111) of the handheld part (11), so that the puncture needle (3) can penetrate from the upper end opening of the channel (111) and pass out from the lower end opening of the tube body (12); Wherein, the hand-held part (11) is made of plastic material, and the tube body (12) is made of metal material.

2. The trocar sheath according to claim 1, characterized in that: The outer wall surface of the upper end of the tube body (12) is processed with an inwardly concave sealing pattern (121), and the sealing pattern (121) is coated with adhesive.

3. The trocar sheath according to claim 1, characterized in that: The outer wall surface of the tube body (12) is a rough surface.

4. The trocar sheath according to claim 1, characterized in that: The outer wall surface of the tube body (12) is provided with a plurality of inwardly concave or outwardly convex annular patterns (13), and the annular patterns (13) are arranged in sequence along the axial direction of the tube body (12).

5. The trocar sheath according to claim 4, characterized in that: A positioning ring (14) is sleeved on the outer periphery of the tube body (12), and a limiting structure cooperating with the annular pattern (13) is provided on the inner side wall of the positioning ring (14).

6. The trocar sheath according to any one of claims 1 to 5, characterized in that: The outer wall surface and / or the inner wall surface of the tube body (12) are coated with an insulating layer.

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