Choke valve for puncture device

Abstract

The choke valve comprises a valve body, the valve body comprises a positioning block, an outer ring, a protruding portion, a puncture cavity and a V-shaped choke sealing piece, the positioning block is arranged at the bottom of the outer ring, the outer ring is arranged on the outer side of the protruding portion, a groove is reserved between the protruding portion and the outer ring, the V-shaped choke sealing piece is communicated with the interior of the protruding portion, and the V-shaped choke sealing piece is arranged in the groove. An elastic V-shaped triangular air blocking piece is arranged at the top of the V-shaped air blocking sealing piece, a plurality of sets of concave ribs are arranged on the V-shaped air blocking sealing piece, and the concave ribs extend from the middle of the V-shaped air blocking sealing piece to the edge of the V-shaped air blocking sealing piece. The check valve has the advantages that the sealing performance of the check valve can be better, the stress area is increased, and therefore the check effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device components, in particular to an air blocking valve for a puncture device. Background Art

[0002] Laparoscopic trocars are used to provide instrument channels for abdominal and pelvic surgeries. They are also used in conjunction with surgical instruments such as intracavitary staplers / ultrasonic scalpels. As an essential component of the trocar, the air-blocking valve is installed in a sealed manner on the channel through which surgical instruments pass. When surgical instruments pass through the middle incision, the air-blocking valve acts as a seal. The air-blocking valve is generally in the shape of a straight line. When instruments pass through, the straight-shaped air-blocking valve is easily deformed, which increases resistance, has a poor anti-return effect, is prone to air leakage, and even affects the surgical effect. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an air-blocking valve for a puncture device, which has the advantages of improving the sealing performance of the air-blocking valve, increasing the force-bearing area, and thus enhancing the anti-return effect, thereby solving the problem that the air-blocking valve is easy to deform, resulting in increased resistance, poor anti-return effect, easy leakage and even affecting the surgical effect.

[0004] In order to achieve the above advantages of making the sealing performance of the air blocking valve better, increasing the force bearing area, and thus improving the anti-return effect, the specific technical solutions adopted by the utility model are as follows:

[0005] A gas blocking valve for a puncture device comprises a valve body, wherein the valve body comprises a positioning block, an outer ring, a raised portion, a puncture cavity, and a V-shaped gas blocking sealing sheet, wherein the positioning block is arranged at the bottom of the outer ring, the outer ring is arranged on the outside of the raised portion, a groove is left between the raised portion and the outer ring, the V-shaped gas blocking sealing sheet is communicated with the inside of the raised portion to form the puncture cavity, the top of the V-shaped gas blocking sealing sheet is an elastic V-shaped triangular gas blocking sheet, an array of concave ribs is arranged on the V-shaped gas blocking sealing sheet, and the array of concave ribs extends from the middle part of the V-shaped gas blocking sealing sheet to the edge.

[0006] Furthermore, the valve body is made of medical-grade silicone material with high resilience and low friction coefficient.

[0007] Furthermore, the number of the positioning blocks is two groups, and the two groups of positioning blocks correspond to each other to form an annular block.

[0008] Furthermore, the outer diameter of the protrusion is greater than the outer diameter of the V-shaped gas blocking sealing sheet.

[0009] Furthermore, two groups of mounting blocks are arranged on the edge of the outer ring, and the outer ring is coaxially arranged with the raised portion and the V-shaped air blocking sealing sheet.

[0010] Furthermore, the puncture cavity is arranged inside the outer ring, the raised portion and the V-shaped air-blocking sealing sheet.

[0011] Furthermore, two groups of supporting ribs are arranged inside the V-shaped gas blocking sealing sheet, and the supporting ribs correspond to the top of the V-shaped gas blocking sealing sheet. A flow guide section is arranged on the V-shaped gas blocking sealing sheet.

[0012] Compared with the prior art, the utility model provides a throttle valve for a trocar, which has the following beneficial effects:

[0013] By providing a positioning block, an outer ring, a raised portion, a puncture cavity, and a V-shaped air-blocking sealing sheet on the valve body, an array of concave ribs and a flow guide section are provided on the V-shaped air-blocking sealing sheet, and the array of concave ribs extend from the middle part to the edge of the V-shaped air-blocking sealing sheet. When the V-shaped air-blocking sealing sheet is subjected to the thrust of the duct air pressure, the airflow will flow from all sides to the middle, increasing the force-bearing area and thus improving the anti-return effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model;

[0017] Figure 3 It corresponds to Figure 1 Rear view of.

[0018] In the figure: positioning block 2, outer ring 3, raised portion 4, puncture cavity 5, V-shaped air blocking sealing sheet 6, concave rib 61, supporting rib 62. DETAILED DESCRIPTION

[0019] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] According to an embodiment of the utility model, a blocking valve for a trocar is provided.

[0021] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3 As shown, a kind of air blocking valve for puncture device according to the embodiment of the utility model comprises a valve body, the valve body comprises a positioning block 2, an outer ring 3, a raised portion 4, a puncture cavity 5, and a V-shaped air blocking sealing sheet 6, the positioning block 2 is arranged at the bottom of the outer ring 3, the outer ring 3 is arranged on the outside of the raised portion 4, a groove is left between the raised portion 4 and the outer ring 3, the V-shaped air blocking sealing sheet 6 is communicated with the inside of the raised portion 4 to form the puncture cavity 5, the top of the V-shaped air blocking sealing sheet 6 is an elastic V-shaped triangular air blocking sheet, and an array of concave ribs 61 is arranged on the V-shaped air blocking sealing sheet 6, and the array of concave ribs 61 extends along the middle part of the V-shaped air blocking sealing sheet 6 to the edge. Through the V-shaped air blocking sealing sheet 6, when the air pressure thrust of the catheter is applied, the airflow will be directed from all sides to the middle, increasing the force bearing area, thereby improving the anti-return effect.

[0022] In one embodiment, the valve body is made of medical-grade silicone material with high resilience and low friction coefficient.

[0023] In one embodiment, the number of the positioning blocks 2 is two groups, and the two groups of positioning blocks 2 correspond to each other to form an annular block. The positioning blocks 2 facilitate the positioning and installation of the valve body.

[0024] In one embodiment, the outer diameter of the protrusion 4 is greater than the outer diameter of the V-shaped air blocking sealing sheet 6. With this structure, when the instrument is withdrawn from the air blocking valve, the structure can be relied upon as a support to offset a part of the friction resistance when the instrument is withdrawn by bending the middle part inward and reducing the distance between the two ends.

[0025] In one embodiment, two groups of mounting blocks are provided on the edge of the outer ring 3 , and the outer ring 3 , the raised portion 4 , and the V-shaped gas blocking sealing sheet 6 are coaxially arranged.

[0026] In one embodiment, the puncture cavity 5 is arranged inside the outer ring 3 , the raised portion 4 and the V-shaped air-blocking sealing sheet 6 .

[0027] In one embodiment, two groups of supporting ribs 62 are further provided inside the V-shaped air blocking sealing sheet 6, and the supporting ribs 62 correspond to the top of the V-shaped air blocking sealing sheet 6. A flow guiding section is provided on the V-shaped air blocking sealing sheet 6. Thus, when the air pressure thrust of the duct is applied, the airflow will flow from all sides to the middle, increasing the force bearing area and thus improving the anti-return effect.

[0028] Working principle: by positioning block 2, outer ring 3, raised part 4, puncture cavity 5, V-shaped air-blocking sealing sheet 6 on the valve body, an array of concave ribs 61 and a flow guide section are arranged on the V-shaped air-blocking sealing sheet 6, and the array of concave ribs 61 extends from the middle part to the edge of the V-shaped air-blocking sealing sheet 6. When the V-shaped air-blocking sealing sheet 6 is subjected to the thrust of the conduit air pressure, the airflow will flow from all sides to the middle, increasing the force-bearing area, thereby improving the anti-return effect.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A throttle valve for a trocar, comprising a valve body, characterized in that: The valve body comprises a positioning block (2), an outer ring (3), a raised portion (4), a puncture cavity (5), and a V-shaped air-blocking sealing sheet (6); the positioning block (2) is arranged at the bottom of the outer ring (3); the outer ring (3) is arranged on the outside of the raised portion (4); a groove is left between the raised portion (4) and the outer ring (3); the V-shaped air-blocking sealing sheet (6) is communicated with the inside of the raised portion (4) to form the puncture cavity (5); the top of the V-shaped air-blocking sealing sheet (6) is an elastic V-shaped triangular air-blocking sheet; an array of concave ribs (61) is arranged on the V-shaped air-blocking sealing sheet (6), and the array of concave ribs (61) extends from the middle of the V-shaped air-blocking sealing sheet (6) to the edge.

2. The air blocking valve for a trocar according to claim 1, characterized in that: The valve body is made of medical grade silicone material with high resilience and low friction coefficient.

3. The air blocking valve for a trocar according to claim 1, characterized in that: The number of the positioning blocks (2) is two groups, and the two groups of positioning blocks (2) correspond to each other to form an annular block.

4. The air blocking valve for a trocar according to claim 1, characterized in that: The outer diameter of the raised portion (4) is greater than the outer diameter of the V-shaped gas blocking sealing sheet (6).

5. The air blocking valve for a trocar according to claim 1, characterized in that: Two groups of mounting blocks are arranged on the edge of the outer ring (3), and the outer ring (3) is coaxially arranged with the raised portion (4) and the V-shaped air blocking sealing sheet (6).

6. The air blocking valve for a trocar according to claim 1, characterized in that: The puncture cavity (5) is arranged inside the outer ring (3), the raised portion (4) and the V-shaped air-blocking sealing sheet (6).

7. The air blocking valve for a trocar according to claim 1, characterized in that: Two groups of supporting ribs (62) are also arranged inside the V-shaped gas blocking sealing sheet (6), and the supporting ribs (62) correspond to the top of the V-shaped gas blocking sealing sheet (6). A flow guide section is arranged on the V-shaped gas blocking sealing sheet (6).

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