High-air-tightness duckbill valve for puncture sleeve

Abstract

The utility model discloses a high-airtightness duckbill valve for a puncture sleeve. The high-airtightness duckbill valve comprises a body. The body is made of a flexible material, the body is provided with a cavity with an upward opening, the cavity is provided with two gaps penetrating through the bottom surface of the cavity, and the two gaps are cross-shaped, so that a valve part capable of being opened and closed is formed on the bottom surface of the cavity. The two gaps penetrating through the bottom face of the cavity are formed in the cavity, the two gaps are matched to form a cross shape, the four valve parts capable of being opened and closed are formed on the bottom face of the cavity, and when the puncture needle penetrates through the gaps to enter the abdominal cavity of the human body, the valve parts are opened and attached to the peripheral side face of the puncture needle; and the gap formed between the valve part and the puncture needle is very small, so that external air is difficult to enter the abdominal cavity through the gap, and the surgical risk of a patient is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument field technology especially is a kind of duckbill valve for puncture cannula with high airtightness. BACKGROUND

[0002] With the development of television technology and camera technology, minimally invasive surgical methods represented by laparoscopic surgery have rapidly developed in recent years. Minimally invasive treatment technology is gradually recognized by the majority of doctors for its small operation and small trauma, and is an inevitable trend of future surgical method development. At present, in gynecology, general surgery and other surgeries involving the abdominal cavity, open surgery is gradually changing to endoscopic minimally invasive surgery. More and more doctors are trained through laparoscopic technology, and surgical operations are becoming more and more skilled, playing an important role in the promotion and popularization of hospitals at all levels. On the other hand, it has further promoted the development of laparoscopes and supporting surgical instruments.

[0003] Cannula puncture is an indispensable step to establish a laparoscopic observation channel and a surgical instrument channel. A laparoscopic puncture device is a necessary tool for performing this step. Laparoscopic surgical methods make several small incisions on the waist and abdomen of the patient, and the incision length is generally 0.5-1 cm. Therefore, the patient will not form a long scar after recovery. A puncture cannula is inserted into each incision as a working channel, and a laparoscope and surgical instruments are operated through these channels. The surgical instruments used in laparoscopic surgery are specially designed extended surgical instruments. The entire surgery can be performed under the guidance of the image transmitted to the monitor through the laparoscope. The surgery can achieve the same surgical effect as open surgery.

[0004] The laparoscopic puncture device has a duckbill valve for puncture cannula with high airtightness. The duckbill valve for puncture cannula with high airtightness is used to facilitate the entry and exit of the puncture needle into the abdominal cavity and to ensure that external air does not enter the abdominal cavity, thereby ensuring the smooth progress of the patient's surgery. The existing duckbill valve for puncture cannula with high airtightness has an openable through slot, and the through slot is in the shape of a "I". After the puncture needle passes through the through slot, a large gap is formed in the through slot, which allows external air to easily enter the abdominal cavity through the gap, increasing the risk of the patient's surgery. Therefore, it is necessary to improve the existing duckbill valve for puncture cannula with high airtightness. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a duckbill valve for puncture cannula with high airtightness, which effectively solves the problem of the existing duckbill valve for puncture cannula with high airtightness, i.e. after the puncture needle passes through the through slot, a large gap is formed in the through slot, which allows external air to easily enter the abdominal cavity through the gap, increasing the risk of the patient's surgery.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The duckbill valve for the puncture cannula has high air tightness, and comprises a body; the body is made of flexible material, the body has a cavity with an opening facing upward, two slits penetrating through the bottom surface of the cavity are formed in the cavity, and the two slits are in the shape of a cross, so that the bottom surface of the cavity is formed with a valve part which can be opened and closed.

[0008] As a preferred solution, the bottom surface of the cavity is concavely provided with a groove, and the two slits are formed in the bottom surface of the groove; the design of the groove makes the thickness of the contact position between the puncture needle and the valve part thinner, so that the puncture needle can more easily open the valve part and enter the abdominal cavity, and the valve part is also convenient to fit with the puncture needle.

[0009] As a preferred solution, the inner wall surface of the cavity is provided with a guide slope; the guide slope makes the insertion of the puncture needle more accurate.

[0010] As a preferred solution, the guide slope is a plurality of guide slopes which are circumferentially and spacedly arranged around the two slits.

[0011] As a preferred solution, the upper side of the circumferential surface of the body extends downwardly and outwardly to form a fixing part which is fixed with the puncture tube body, so that the assembly of the puncture device is more firm and reliable.

[0012] As a preferred solution, the side surface of the fixing part is convexly provided with an annular convex rib, so that the assembly of the puncture device is more firm and reliable.

[0013] As a preferred solution, the inner side surface of the fixing part is convexly provided with an annular convex rib, and the outer side surface of the fixing part is convexly provided with two annular convex ribs which are arranged in an upper-lower spaced manner.

[0014] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, the above technical solution can know that:

[0015] By forming the two slits penetrating through the bottom surface of the cavity on the cavity, and cooperating with the two slits in the shape of a cross, the bottom surface of the cavity is formed with the valve part which can be opened and closed, the valve part is four, when the puncture needle enters the abdominal cavity of the human body through the slits, the valve part is opened and fit with the circumferential surface of the puncture needle, and compared with the traditional design of the "one" shaped through groove, the gap formed between the valve part and the puncture needle is very small, the external air is difficult to enter the abdominal cavity through the gap, and the surgical risk of the patient is greatly reduced.

[0016] In order to more clearly set forth the structural features and functions of the utility model, the utility model will be described in detail below by combining with the drawings and specific embodiments: DRAWINGS

[0017] Fig. 1 is the three-dimensional schematic view of the preferred embodiment of the utility model;

[0018] Fig. 2 is a sectional view of a preferred embodiment of the present application.

[0019] Brief Description of the Drawings:

[0020] 10, body 101, cavity

[0021] 102, gap 103, groove

[0022] 11, valve part 12, guide slope

[0023] 13, fixed part 131, annular convex rib. DETAILED DESCRIPTION

[0024] Please refer to Figs. 1-2 , which shows the specific structure of a preferred embodiment of the present application, comprising a body 10.

[0025] The body 10 is of flexible material, the body 10 has a cavity 101 with an opening upward, the cavity 101 is provided with two through-gaps 102 on the bottom surface of the cavity 101, the two gaps 102 are in the shape of a cross, so that the bottom surface of the cavity 101 forms a valve part 11 which can be opened and closed; in this embodiment, the bottom surface of the cavity 101 is recessed with a groove 103, the two gaps 102 are provided on the bottom surface of the groove 103, the design of the groove 103 makes the thickness of the contact position between the puncture needle and the valve part 11 thinner, the puncture needle is easier to open the valve part 11 and enter the abdominal cavity, the valve part 11 is also convenient to fit with the puncture needle; and the inner wall surface of the cavity 101 is provided with guide slopes 12, the guide slopes 12 are multiple, the multiple guide slopes 12 are arranged in a circumferential interval around the two gaps 102, the guide slopes 12 make the insertion of the puncture needle more accurate; in addition, the upper side of the peripheral side of the body 10 extends downward and has a fixed part 13 which cooperates with the puncture tube to fix, so that the assembly of the puncture device is more firm and reliable; the side surface of the fixed part 13 is convexly provided with an annular convex rib 131, so that the assembly of the puncture device is more firm and reliable, specifically, the inner side surface of the fixed part 13 is convexly provided with an annular convex rib 131, and the outer side surface of the fixed part 13 is convexly provided with two annular convex ribs 131 arranged in an upper and lower interval.

[0026] The design emphasis of the present application is that two through-gaps are provided on the cavity, and the two gaps are in the shape of a cross, so that the bottom surface of the cavity forms a valve part which can be opened and closed, the valve part is four, when the puncture needle enters the abdominal cavity of the human body through the gap, the valve part is opened and fits with the peripheral side surface of the puncture needle, and compared with the traditional "one" shaped through slot design, the gap formed between the valve part and the puncture needle is very small, the external air is difficult to enter the abdominal cavity through the gap, which greatly reduces the surgical risk of the patient.

[0027] The above merely describes the preferred embodiment of the present application, and is not intended to limit the technical scope of the present application in any way. Any slight modification, equivalent change, and modification made according to the technical essence of the present application shall still fall within the scope of the technical scheme of the present application.

Claims

1. A duckbill valve for a puncture cannula with high air tightness, characterized by: The body is made of flexible material and has a cavity with an opening facing upward, two slits penetrating the bottom surface of the cavity, and a valve part formed on the bottom surface of the cavity.

2. The duckbill valve for high-gas-tight puncture cannula according to claim 1, characterized in that: The bottom surface of the cavity is concave, and the two slits are formed on the bottom surface of the concave part.

3. The duckbill valve for high-gas-tight puncture cannula according to claim 1, characterized in that: The inner wall surface of the cavity is provided with a guide slope.

4. The duckbill valve for high-gas-tight puncture cannula according to claim 3, characterized in that: The guide slope is in multiple, and the multiple guide slopes are arranged in a circumferential interval around the two slits.

5. The duckbill valve for high-gas-tight puncture cannula according to claim 1, characterized in that: The upper side of the body peripheral surface extends downward to form a fixed part for cooperating with the puncture tube body.

6. The duckbill valve for high-gas-tight puncture cannula according to claim 5, characterized in that: The side surface of the fixed part is convexly provided with an annular convex rib.

7. The duckbill valve for high-gas-tight puncture cannula according to claim 5, characterized in that: The inner side surface of the fixed part is convexly provided with an annular convex rib, and the outer side surface of the fixed part is convexly provided with two annular convex ribs arranged in an upper and lower interval.

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