CN104399177A - Medical device quick connection mechanism - Google Patents

Abstract

The invention relates to a quick connecting mechanism for medical instruments. It has solved current medical instrument and has connected the not firm scheduling problem inadequately. Including being cylindric attach fitting, the apparatus connects, external device connects and sealing ring, attach fitting circumference inboard is equipped with first internal thread section, it links to each other with first external screw thread to be equipped with first external screw thread and first internal thread section on the apparatus connects, attach fitting circumference inboard is equipped with second internal thread section, it links to each other with second external screw thread to be equipped with second external screw thread and second internal thread section on the external device connects, the screw thread opposite direction of first internal thread section and second internal thread section, it is inboard that sealing ring circumference is inboard to surpass apparatus joint and external device joint circumference respectively, and the both sides of sealing ring are equipped with the annular seal groove respectively. This medical instrument quick connect mechanism's advantage lies in: simple structure, the erection joint is swift convenient, and joint strength is high, and the leakproofness is good, is difficult for appearing leaking the phenomenon, and stability is strong.

Description

Medical device quick connection mechanism

technical field

The invention belongs to the technical field of medical equipment, in particular to a quick connection mechanism for medical equipment.

Background technique

During the use of common medical devices, there are many situations that require the device to be connected to an external device to form a channel between the external device and the human body to extract the waste liquid and gas from the human body or enter the fluid and gas into the human body. Therefore, it is necessary to These liquids or gases are transported through many medical tubes. The connection structures between these medical tubes are mostly plug-in or rotary clamping. These connection methods exist: the connection process is not fast enough, the connection strength is low, the sealing is poor, and it is easy to Leakage phenomenon, poor stability and other problems.

In order to solve the problems existing in the prior art, people have carried out long-term exploration and proposed various solutions. For example, the Chinese patent literature discloses a pipe fitting connection mechanism for an infusion set [application number: 201020269255.5]. The pipe fitting connection mechanism of this infusion set includes a first connecting pipe and a second connecting pipe made of hard materials. The ends of the pipe and the second connecting pipe are socketed, and a connecting mechanism is provided at the joint of the first connecting pipe and the second connecting pipe to make the two axially close together and form a liquid seal between the two. The above-mentioned solution solves the problem of inconvenient connection of existing medical device pipe fittings to a certain extent, but the solution still has the problems of low connection strength, poor sealing, easy leakage, and poor stability.

Contents of the invention

The object of the present invention is to solve the above problems and provide a quick connection mechanism for medical devices with simple and reasonable structure, easy connection and good sealing performance.

In order to achieve the above object, the present invention adopts the following technical solutions: the quick connection mechanism of the medical device includes a cylindrical connecting joint, one end of the connecting joint is connected with an instrument joint, and the other end is connected with an external equipment joint. That is, a sealing ring is provided on the inner side of the middle part of the connecting joint, and the ends of the instrument joint and the external equipment joint are respectively inserted into the connecting joint, and the circumferential inner side of the connecting joint is provided on one side of the sealing ring. The first internal thread section, the instrument joint is provided with a first external thread matching the first internal thread section and the first internal thread section is connected to the first external thread thread, and the connecting joint A second internal thread section located on the other side of the sealing ring is provided on the inner side of the circumference, and a second external thread matching the second internal thread section is provided on the external device joint, and the second internal thread section is in line with the The second external thread thread is connected, the thread direction of the first internal thread segment is opposite to that of the second internal thread segment, the circumferential inner side of the sealing ring respectively exceeds the circumferential inner side of the instrument joint and the external equipment joint, and the said Both sides of the sealing ring are respectively provided with annular sealing grooves for inserting the instrument connector and the external device connector. In this structure, the instrument joint and the external equipment joint can be screwed into the joint joint at the same time by rotating the joint joint in the circumferential direction, which is convenient for installation and connection, and the instrument joint and the external equipment joint are inserted in the annular sealing groove so that the sealing performance of the mechanism is good .

In the above quick connection mechanism for medical devices, the sealing ring is made of rubber material, and the annular sealing grooves are arranged symmetrically with each other.

In the above-mentioned quick connection mechanism for medical devices, an annular protrusion with an arched cross section is provided in the annular sealing groove, and the outer end of the annular protrusion does not exceed the notch of the annular sealing groove. The structure can improve the structural strength of the sealing ring, so that the sealing ring is not easily deformed.

In the above-mentioned quick connection mechanism for medical devices, the thickness of the sealing ring increases gradually from the circumferential outer side to the circumferential inner side. The sealing performance between the sealing ring and the connector of the instrument and the connector of the external device is better.

In the above-mentioned quick connection mechanism for medical devices, the connecting joints, the device joints and the external equipment joints are all made of rigid materials, and the connecting joints are provided with several anti-slip lines on the circumferential outside.

In the above-mentioned quick connection mechanism for medical devices, the lengths of the first internal thread segment and the second internal thread segment are equal, and the lengths of the first external thread and the second external thread are both longer than the first internal thread segment and the length of the second internal thread segment.

Compared with the existing technology, the advantages of the quick connection mechanism of the medical device are: simple structure, fast and convenient installation and connection, high connection strength, good sealing performance, not easy to leak, and strong stability.

Description of drawings

Fig. 1 is a schematic structural diagram provided by the present invention.

In the figure, the connection joint 1, the first internal thread section 11, the second internal thread section 12, the anti-slip pattern 13, the instrument joint 2, the first external thread 21, the external equipment joint 3, the second external thread 31, the sealing ring 4, An annular sealing groove 41 and an annular protrusion 42 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the medical device quick connection mechanism includes a cylindrical connecting joint 1, one end of the connecting joint 1 is connected with the instrument joint 2, and the other end is connected with the external equipment joint 3, and the middle part of the connecting joint 1 is arranged inwardly. There is a sealing ring 4, and the ends of the instrument joint 2 and the external equipment joint 3 are respectively inserted into the connecting joint 1, and the connecting joint 1 is provided with a first internal thread section 11 on one side of the sealing ring 4 on the inner side of the circumference of the connecting joint 1. A first external thread 21 matching the first internal thread segment 11 is provided, and the first internal thread segment 11 is threadedly connected to the first external thread 21, and the connecting joint 1 is provided with a second ring located on the other side of the sealing ring 4 inwardly. Two internal thread segments 12, the external device joint 3 is provided with a second external thread 31 matching the second internal thread segment 12 and the second internal thread segment 12 is threadedly connected with the second external thread 31, the first internal thread segment 11 The thread direction of the second internal thread segment 12 is opposite, the circumferential inner side of the sealing ring 4 respectively exceeds the circumferential inner side of the instrument joint 2 and the external equipment joint 3, and the two sides of the sealing ring 4 are provided with the instrument joint 2 and the external equipment joint respectively. 3 inserted into the annular sealing groove 41, through the circumferential rotation of the connection joint 1, the instrument joint 2 and the external equipment joint 3 can be tightened in the joint joint 1 at the same time, which is convenient for installation and connection, and the instrument joint 2 and the external equipment joint 3 are inserted into the The inside of the annular sealing groove 41 makes the sealing performance of this mechanism good.

Preferably, the sealing ring 4 here is made of rubber material, and the annular sealing grooves 41 are arranged symmetrically with each other. In order to improve the structural strength of the sealing ring 4 so that the sealing ring 4 is not easily deformed, an annular protrusion 42 with an arched cross section is arranged in the annular sealing groove 41, and the outer end of the annular protrusion 42 does not exceed the notch of the annular sealing groove 41 .

Wherein, the thickness of the sealing ring 4 from the outer side of the circumference to the inner side of the circumference gradually increases, so that the sealing between the sealing ring 4 and the instrument joint 2 and the external equipment joint 3 is better. Preferably, the connecting joint 1 , the instrument joint 2 and the external device joint 3 are all made of rigid materials, and the connecting joint 1 is provided with several anti-slip lines 13 on the circumferential outside. In addition, the lengths of the first internal thread segment 11 and the second internal thread segment 12 here are equal, and the lengths of the first external thread 21 and the second external thread 31 are both longer than the first internal thread segment 11 and the second internal thread segment 12 length.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although the connection joint 1, the first internal thread section 11, the second internal thread section 12, the anti-skid pattern 13, the instrument joint 2, the first external thread 21, the external device joint 3, the second external thread 31, Terms such as sealing ring 4 , annular sealing groove 41 , and annular protrusion 42 are used, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (6)

1. a medical apparatus and instruments quick-connect machanism, comprise jointing (1) cylindrically, described jointing (1) one end is connected with apparatus joint (2), the other end is connected with external equipment joint (3), it is characterized in that, described jointing (1) middle part is provided with sealing ring (4) week to the inside, described apparatus joint (2) and external equipment joint (3) end insert in jointing (1) respectively, be provided with first internal thread segment (11) of the side being positioned at sealing ring (4) described jointing (1) week to the inside, described apparatus joint (2) is provided with the first external screw thread (21) of matching with the first internal thread segment (11) and described the first internal thread segment (11) is connected with the first external screw thread (21) screw thread, described jointing (1) week is provided with the second internal thread segment (12) being positioned at sealing ring (4) opposite side to the inside, described external equipment joint (3) is provided with the second external screw thread (31) of matching with the second internal thread segment (12) and described the second internal thread segment (12) is connected with the second external screw thread (31) screw thread, described the first internal thread segment (11) is contrary with the hand of spiral of the second internal thread segment (12), exceed apparatus joint (2) and external equipment joint (3) week described sealing ring (4) week to the inside respectively to the inside, and the both sides of described sealing ring (4) are respectively equipped with the annular seal groove (41) inserted for apparatus joint (2) and external equipment joint (3).

2. medical apparatus and instruments quick-connect machanism according to claim 1, is characterized in that, described sealing ring (4) is made up of elastomeric material, and described annular seal groove (41) is symmetrically set.

3. medical apparatus and instruments quick-connect machanism according to claim 2, it is characterized in that, be provided with the annular protrusion (42) that cross section is arch in described annular seal groove (41), described annular protrusion (42) outer end does not exceed the notch of annular seal groove (41).

4. the medical apparatus and instruments quick-connect machanism according to claim 1 or 2 or 3, is characterized in that, the thickness size of described sealing ring (4) outer circumferential becomes large gradually to all thickness sizes to the inside.

5. medical apparatus and instruments quick-connect machanism according to claim 4, it is characterized in that, described jointing (1), apparatus joint (2) and external equipment joint (3) are made by rigid material, and described jointing (1) outer circumferential is provided with some anti-slip veins (13).

6. medical apparatus and instruments quick-connect machanism according to claim 1, it is characterized in that, described the first internal thread segment (11) is equal with the length of the second internal thread segment (12), and the length of described the first external screw thread (21) and the second external screw thread (31) is all more than the length of the first internal thread segment (11) and the second internal thread segment (12).