Puncture outfit

Abstract

The puncture outfit comprises a puncture needle, a puncture sleeve and an air injection valve, the puncture needle is sleeved with the puncture sleeve, one end of the air injection valve is communicated with an air source, and the other end of the air injection valve is communicated with the puncture sleeve; a one-way valve is arranged in the gas injection valve and prevents gas in the puncture cannula from flowing into the gas injection valve. Due to the fact that the one-way valve is arranged in the gas injection valve, gas in the puncture cannula is prevented from flowing into the gas injection valve, gas leakage can be effectively prevented, it is guaranteed that required operation conditions can be maintained in the operation process, and safety and efficiency of the operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a puncture outfit. BACKGROUND

[0002] Puncture outfit is a kind of medical equipment, usually used in minimally invasive surgery, such as laparoscopic surgery. It is composed of a puncture needle with a sharp metal tip and a protective sleeve, sometimes equipped with a sealing device to prevent gas leakage. In laparoscopic surgery, it is usually necessary to establish pneumoperitoneum, that is, to inject carbon dioxide gas into the abdominal cavity to expand the abdominal cavity to facilitate the observation and operation of the doctor. The sealing device can prevent gas leakage and keep the pressure in the abdominal cavity stable. The sealing device in the prior art generally adopts valve device, and the valve body and valve core of the gas injection valve need to be matched very tightly to have good sealing performance, which will cause jam in the actual use process, and it is difficult to open and close. But if the valve body and valve core are matched very loosely, the gap between the valve body and valve core will leak gas. SUMMARY

[0003] The utility model aims at providing a puncture outfit to solve the technical problems mentioned in the background.

[0004] The technical scheme for realizing the utility model is as follows: a puncture outfit, comprising a puncture needle, a puncture sleeve and a gas injection valve, the puncture sleeve is sleeved on the puncture needle, one end of the gas injection valve is communicated with a gas source, and the other end is communicated with the puncture sleeve, a one-way valve is arranged in the gas injection valve, and the one-way valve prevents the gas in the puncture sleeve from flowing into the gas injection valve.

[0005] Further, the gas injection valve comprises a valve body and a valve core, an airflow channel is formed in the valve body, the two ends of the airflow channel are respectively an air inlet and an air outlet, the air inlet is communicated with the gas source, and the air outlet is communicated with the puncture sleeve, a switch handle is arranged on the valve core, the switch handle drives the valve core to be rotatably arranged in the valve body, and the valve core rotates to selectively communicate the air inlet with the air outlet.

[0006] Further, a valve core hole is formed through the middle of the valve core, and the valve core has at least one state, in which state, the air inlet is communicated with the air outlet through the valve core hole.

[0007] Further, the one-way valve comprises a valve seat, an elastic member and a metal ball, the valve seat is fixed in the airflow channel close to one end of the air outlet, the metal ball is matched with the valve core hole, one end of the elastic member abuts against the valve seat, and the other end presses the metal ball on the valve core hole and seals the valve core hole, when the gas source injects gas, the elastic member is compressed, and the metal ball is separated from the valve core hole.

[0008] Further, a nodular conical protrusion is arranged on the outer circumferential surface of the puncture sleeve.

[0009] Further, the puncture cannula is provided with a sealing cap at one end opposite to the puncture needle head.

[0010] By adopting the technical scheme, the utility model has the beneficial effects that:

[0011] (1) The utility model discloses a one-way valve is arranged in the gas injection valve, prevents the gas in the puncture cannula from flowing into the gas injection valve, can effectively prevent the gas from leaking, ensures that the required operation condition can be maintained during the operation, improves the safety and efficiency of the operation.

[0012] (2) The utility model discloses a valve core hole is arranged on the valve core, and the switch handle is moved to rotate the valve core, and the air flow passage in the valve body is controlled to be connected or disconnected, and together with the one-way valve, a double-layer leakage prevention structure is formed.

[0013] (3) The one-way valve of the utility model adopts the cooperation mode of elastic member and metal ball, when gas is injected, the elastic member is compressed, and the gas can enter the puncture cannula, when no gas is injected, the metal ball seals the valve core hole, preventing the gas from leaking.

[0014] (4) The utility model discloses that the outer circumferential surface of the puncture cannula is provided with a boundary stake conical convex, can increase the friction force between the puncture cannula and the surrounding tissue, so that the position of the puncture cannula is better fixed, and it is ensured that the puncture cannula does not move or fall off easily during the operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the content of the utility model more easily understood clearly, the utility model will be further explained in detail below according to specific embodiments and in conjunction with the drawings, wherein

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] The reference numerals in the drawings are: puncture cannula 1, conical convex 1-1, gas injection valve 2, valve body 2-1, valve core 2-2, gas inlet 2-3, gas outlet 2-4, switch handle 2-5, one-way valve 3, valve seat 3-1, elastic member 3-2, metal ball 3-3, sealing cap 4. DETAILED DESCRIPTION

[0018] In order to better understand the above technical scheme, the above technical scheme will be explained in detail below in conjunction with the drawings of the specification and specific embodiments.

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0021] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the embodiments of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The present application will be further described below in combination with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and cannot limit the protection scope of the present application.

[0024] (Embodiment 1)

[0025] See Figure 1The puncture device of the embodiment comprises a puncture needle, a puncture sleeve 1 and an air injection valve 2, the puncture sleeve 1 is sleeved on the puncture needle, one end of the air injection valve 2 is communicated with a gas source, the gas source is an abdominal insufflation machine in the embodiment, the other end is communicated with the puncture sleeve 1, the abdominal insufflation machine; a one-way valve is arranged in the air injection valve 2, the one-way valve prevents the gas in the puncture sleeve 1 from flowing into the air injection valve 2. After the puncture sleeve 1 is inserted into the human body, the abdominal insufflation machine performs air injection pressure, and the gas enters the human body cavity through the one-way valve.

[0026] Specifically, the air injection valve 2 comprises a valve body 2-1 and a valve core 2-2, the valve body 2-1 is internally formed with an air flow channel, the air flow channel has an air inlet 2-3 and an air outlet 2-4 at two ends respectively, the air inlet 2-3 is communicated with the gas source, and the air outlet 2-4 is communicated with the puncture sleeve 1; a switch handle 2-5 is arranged on the valve core 2-2, the switch handle 2-5 drives the valve core 2-2 to be rotatably arranged in the valve body 2-1, and the valve core 2-2 is rotated to selectively communicate the air inlet 2-3 with the air outlet 2-4. A valve core hole is formed in the middle of the valve core 2-2, and the valve core 2-2 has at least one state in which the air inlet 2-3 is communicated with the air outlet 2-4 through the valve core hole. The switch handle 2-5 is actuated to rotate the valve core, so as to control the on-off of the air flow channel in the valve body 2-1.

[0027] The one-way valve 3 comprises a valve seat 3-1, an elastic member 3-2 and a metal ball 3-3, the valve seat 3-1 is fixed in the air flow channel close to one end of the air outlet 2-4, the metal ball 3-3 is matched with the valve core hole; one end of the elastic member 3-2 abuts against the valve seat 3-1, and the other end presses the metal ball 3-3 against the valve core hole and seals the valve core hole; when the abdominal insufflation machine injects gas, the elastic member 3-2 is compressed, and the metal ball 3-3 is separated from the valve core hole. The elastic member 3-2 adopts a compression spring in the embodiment.

[0028] The outer circumferential surface of the puncture sleeve 1 is provided with a nodular conical protrusion 1-1, which can increase the friction between the puncture sleeve 1 and the surrounding tissues, so as to better fix the position of the puncture sleeve 1 and ensure that the puncture sleeve 1 will not be easily moved or fallen off during the operation process.

[0029] The puncture sleeve 1 is provided with a sealing cap 4 at the end opposite to the puncture needle head.

[0030] After the puncture sleeve 1 of the puncture device of the embodiment is inserted into the human tissue, the abdominal insufflation machine is connected with the air injection valve 2, the valve core 2-2 is opened to the open state, the abdominal insufflation machine performs air injection pressure, the metal ball 3-3 moves towards the compression direction of the compression spring under the action of the air pressure and overcomes the elastic force of the compression spring, and the air flow enters the human body cavity through the puncture sleeve 1. When the abdominal insufflation machine stops working, the compression spring rebounds, the metal ball 3-3 is pressed against the air passage again to seal the air passage, and the gas leakage is prevented.

[0031] The above-described specific embodiments further specifically describe the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A puncture device, characterized by: The injection valve (2) includes a valve body (2-1) and a valve core (2-2), the inside of the valve body (2-1) forms a gas flow channel, the two ends of the gas flow channel are respectively an air inlet (2-3) and an air outlet (2-4), the air inlet (2-3) is communicated with the gas source, and the air outlet (2-4) is communicated with the puncture sleeve (1); the valve core (2-2) is provided with a switch handle (2-5), the switch handle (2-5) drives the valve core (2-2) to be rotatably arranged in the valve body (2-1), and the valve core (2-2) is rotated to selectively communicate the air inlet (2-3) with the air outlet (2-4).

2. The puncture device of claim 1, wherein: The valve core (2-2) is provided with a valve core hole penetrating through the middle part, and the valve core (2-2) has at least one state, in which state, the air inlet (2-3) is communicated with the air outlet (2-4) through the valve core hole.

3. The puncture device of claim 2, wherein: The one-way valve (3) includes a valve seat (3-1), an elastic member (3-2) and a metal ball (3-3), the valve seat (3-1) is fixed in the gas flow channel close to one end of the air outlet (2-4), and the metal ball (3-3) is matched with the valve core hole; one end of the elastic member (3-2) abuts against the valve seat (3-1), and the other end presses the metal ball (3-3) against the valve core hole and seals the valve core hole; when the gas source injects gas, the elastic member (3-2) is compressed, and the metal ball (3-3) is separated from the valve core hole.

4. The puncture device of claim 3, wherein: The puncture sleeve (1) is provided with a nodular conical protrusion (1-1) on the outer peripheral surface.

5. The puncture device of claim 1, wherein: The puncture sleeve (1) is provided with a sealing cap (4) at the end opposite to the needle head of the puncture needle.

6. The puncture device of claim 1, wherein: ​

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