CN215273196U

CN215273196U - Positive pressure exhaust puncture needle

Info

Publication number: CN215273196U
Application number: CN202120946365.9U
Authority: CN
Inventors: 李妍; 于明安; 赵朕龙
Original assignee: China Japan Friendship Hospital
Current assignee: China Japan Friendship Hospital
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-12-24
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses a positive pressure exhaust puncture needle, which belongs to the technical field of medical instruments and medical consumables. A positive pressure exhaust puncture needle comprises an outer needle sleeve and a needle core, wherein the outer needle sleeve comprises a sleeve and a needle seat, the sleeve is fixedly connected to the needle seat, a first interface is arranged at the tail end of the needle seat, a first positive pressure valve is fixedly connected to the first interface, a side pipe is fixedly connected to the side surface of the needle seat, an air filter is arranged in the middle of the side pipe, a second interface is arranged at the tail end of the side pipe, and a second positive pressure valve is fixedly connected to the second interface; the inner cavity of the side tube is communicated with the inner cavity of the needle seat. The utility model has the advantages that: simple structure, reasonable can effectively avoid the entering of air, keeps the intracavity and lasts the malleation state, filters the air of not arranging to the greatest extent, guarantees ultrasonic imaging's accurate.

Description

Positive pressure exhaust puncture needle

Technical Field

The utility model relates to a positive pressure exhaust puncture needle, which belongs to the technical field of medical instruments and medical consumables.

Background

Interventional ultrasound is a new technology developed to further meet the needs of clinical diagnosis and treatment based on ultrasound imaging. It is mainly characterized by that under the condition of ultrasonic monitoring or guidance it can implement various operations of puncture biopsy, suction and medicine injection, etc., and in the course of operation it can be applied to various different puncture needles, catheters and other different equipments.

Puncture needles (PTC) are one of the most commonly used devices, and PTC is required for various kinds of catheterization, such as liquid suction, medicine injection, pleuroperitoneal cavity and the like.

When the PTC is applied to the chest cavity catheter, the PTC is punctured into the chest cavity through skin, and after the needle core is pulled out, air can enter the air chest cavity through the PTC because the chest cavity is in a negative pressure state, so that a PTC small opening is immediately plugged when medical staff operate, and the situation that the ultrasonic display is unclear due to air inflow is avoided. In addition, when the medicine is injected by PTC, the gas is brought in when the exhaust is incomplete, and the ultrasonic display is unclear, which brings inconvenience to the operator.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the puncture needle with positive pressure and air filtering functions and the positive pressure exhaust piece which can be used in combination with the puncture needle are provided, air is prevented from entering, and the accuracy of ultrasonic imaging is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A positive pressure exhaust puncture needle comprises an outer needle sleeve and a needle core, wherein the outer needle sleeve comprises a sleeve and a needle seat, the sleeve is fixedly connected to the needle seat, a first interface is arranged at the tail end of the needle seat, a first positive pressure valve is fixedly connected to the first interface, a side pipe is fixedly connected to the side surface of the needle seat, an air filter is arranged in the middle of the side pipe, a second interface is arranged at the tail end of the side pipe, and a second positive pressure valve is fixedly connected to the second interface; the inner cavity of the side tube is communicated with the inner cavity of the needle seat.

The first positive pressure valve and the second positive pressure valve are both made of medical high-molecular elastic materials, are in a closed state under the action of no external force of an instrument, and when an external instrument is punctured, holes in the middle of the first positive pressure valve and the second positive pressure valve can be opened and wrapped on the surface of the instrument without leaving gaps, so that external air can be prevented from entering the inside of the puncture needle when the instrument is replaced.

(3) Filtering the air not exhausted-filtering the air through the small disc when injecting medication or liquid

The outer diameter of the needle core is matched with the inner diameter of the outer needle sleeve, and the needle core can be freely drawn in the outer needle sleeve.

First positive pressure valve fixed connection is inboard at the terminal of first interface, and the airtight fixed connection of edge and the inner wall of first interface.

The second positive pressure valve is fixedly connected to the inner side of the tail end of the second connector, and the edge of the second positive pressure valve is fixedly connected with the inner wall of the second connector in a sealing mode.

The included angle between the side tube and the needle seat is an acute angle. This angle is convenient for the medical staff to operate. The side tube of the utility model realizes the operation of injecting liquid medicine into the body of a patient in the operation. Compared with the puncture needle without a side tube, the side tube structure has the following remarkable advantages: the most important is that the small disc on the side tube can filter air, so as to reduce the air brought by the liquid such as the injection medicine; in addition, when the medicine needs to be pumped and injected repeatedly, the main pipe interface is used for pumping liquid, and the side pipe is used for injecting the medicine, so that the operation is more convenient.

The middle parts of the first positive pressure valve and the second positive pressure valve are provided with holes which can be opened under the action of external force of the instrument. Under the action of non-external force, the two holes are in a closed state, so that the positive pressure state can be kept in the tube cavity.

The air filter is a transfusion air filter. The structure can prevent air bubbles, bacteria and dust from entering liquid medicine when injecting medicine or liquid, so that exhaust is thorough and complete, and the problem that ultrasonic display caused by air brought in the prior art is unclear is solved.

The fixing connection mode includes but is not limited to bonding and integral forming connection. But any other connection means conventional in the medical device field.

The needle core is formed by fixedly connecting a metal needle and a handle. The structure is the prior art, and the structure and the model of the handle part can be set according to the requirement, so that the structure is matched with the needle seat 12 of the outer needle sleeve 1.

The sleeve is provided with scale marks. The medical staff can observe the depth and the position of the puncture conveniently.

The utility model discloses a method of use is the same with ordinary pjncture needle, and the outside air can effectively be filtered to the pressure exhaust piece that increases, keeps inside malleation environment.

The utility model has the advantages as follows: simple structure, reasonable can effectively avoid the entering of air, keeps the intracavity and lasts the malleation state, filters the air of not arranging to the greatest extent, guarantees ultrasonic imaging's accurate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

figure 1 shows the split structure schematic diagram of the present invention

FIG. 2 is a schematic view of the combined structure of the present invention

Figure 3 shows a schematic view of the usage state of the present invention

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

Referring to fig. 1 to 3, a positive pressure exhaust puncture needle comprises an outer needle sleeve 1 and a needle core 2, wherein the outer needle sleeve 1 comprises a sleeve 11 and a needle base 12, the sleeve 11 is fixedly connected to the front end 121 of the needle base 12, the tail end of the needle base 12 is provided with a first interface 122, the first interface 122 is fixedly connected with a first positive pressure valve 3, the side surface of the needle base 12 is fixedly connected with a side tube 13, the front end 131 of the side tube 13 is fixedly connected and communicated with the needle base 12, the middle part of the side tube 13 is provided with an air filter 5, the tail end of the side tube 13 is provided with a second interface 132, and the second interface 132 is fixedly connected with a second positive pressure valve 4; the lumen of the side tube 13 communicates with the lumen of the needle holder.

The outer diameter of the stylet 2 is matched with the inner diameter of the outer needle sleeve 1, and the stylet 2 can be freely drawn in the outer needle sleeve 1.

The first positive pressure valve 3 is fixedly connected to the inner side of the end of the first port 122, and the edge of the first positive pressure valve is fixedly connected with the inner wall of the first port 122 in a sealing manner.

The second positive pressure valve 4 is fixedly connected to the inner side of the end of the second port 132, and the edge of the second positive pressure valve is fixedly connected with the inner wall of the second port 132 in a sealing manner.

The included angle between the side tube 13 and the needle seat 12 is an acute angle, which is convenient for the operation of medical staff.

The middle part of the first positive pressure valve 3 is provided with a hole 31 which can be opened under the external force of the instrument, and the middle part of the second positive pressure valve 4 is provided with a hole 41 which can be opened under the external force of the instrument. Under the action of non-external force, the

holes

31 and 41 are in a closed state, so that the positive pressure state can be kept in the tube cavity.

The air filter 5 is an infusion air filter, which is a conventional component for filtering air bubbles and/or impurities in the liquid to ensure safety when infusing the liquid into the human body through the side tube 13.

The utility model provides a fixed connection mode includes but not limited to bonding, integrated into one piece connect, can also be the conventional connected mode in any other medical instrument field.

The needle core 2 is formed by fixedly connecting a metal needle 21 and a handle 22, the structure is the prior art, and the structure and the model of the handle part can be set according to the requirement so as to be matched with the needle seat 12 of the outer needle sleeve 1.

The sleeve 11 is provided with scale marks, so that medical staff can observe the puncture depth and puncture position conveniently.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and it is not intended to limit the scope of the present invention, and many other modifications and embodiments can be devised by those skilled in the art, which will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A positive pressure exhaust puncture needle is characterized in that: the needle comprises an outer needle sleeve and a needle core, wherein the outer needle sleeve comprises a sleeve and a needle seat, the sleeve is fixedly connected to the needle seat, a first interface is arranged at the tail end of the needle seat, a first positive pressure valve is fixedly connected to the first interface, a side tube is fixedly connected to the side surface of the needle seat, an air filter is arranged in the middle of the side tube, a second interface is arranged at the tail end of the side tube, and a second positive pressure valve is fixedly connected to the second interface; the inner cavity of the side tube is communicated with the inner cavity of the needle seat.

2. A positive pressure exhaust puncture needle according to claim 1, wherein: the outer diameter of the needle core is matched with the inner diameter of the outer needle sleeve, and the needle core can be freely drawn in the outer needle sleeve.

3. A positive pressure exhaust puncture needle according to claim 1, wherein: first positive pressure valve fixed connection is inboard at the terminal of first interface, and the airtight fixed connection of edge and the inner wall of first interface.

4. A positive pressure exhaust puncture needle according to claim 1, wherein: the second positive pressure valve is fixedly connected to the inner side of the tail end of the second connector, and the edge of the second positive pressure valve is fixedly connected with the inner wall of the second connector in a sealing mode.

5. A positive pressure exhaust puncture needle according to claim 1, wherein: the included angle between the side tube and the needle seat is an acute angle.

6. A positive pressure exhaust puncture needle according to claim 1, wherein: the middle parts of the first positive pressure valve and the second positive pressure valve are provided with holes which can be opened under the action of external force of the instrument.

7. A positive pressure exhaust puncture needle according to claim 1, wherein: the air filter is a transfusion air filter.

8. A positive pressure exhaust puncture needle according to claim 1, wherein: the fixing connection mode includes but is not limited to bonding and integral forming connection.

9. A positive pressure exhaust puncture needle according to claim 1, wherein: the needle core is formed by fixedly connecting a metal needle and a handle.

10. A positive airway pressure needle according to any of claims 1 to 9 wherein: the sleeve is provided with scale marks.