Medical adapter

Abstract

The utility model discloses a medical adapter substitute, which belongs to the technical field of medical instruments and comprises an inner cone joint, the bottom end of the inner cone joint is provided with an outer cone joint used for being inserted into inner cones of other infusion appliances, the bottom end of the outer cone joint is provided with a guide shaft, the outer diameter of the guide shaft is smaller than 3.0 mm, and the length of the guide shaft is 5-20 mm. A liquid outlet channel is formed in the guide shaft, a liquid channel is formed in the outer cone connector and communicated with an inner cavity of the liquid outlet channel, the inner cone connector comprises a connector body, a liquid inlet channel is formed in an inner cavity of the connector body and communicated with an inner cavity of the liquid channel, and the liquid outlet channel is communicated with the inner cavity of the liquid inlet channel. Due to the fact that the guide shaft of the conversion connector is long and thin, the guide shaft extends into the anti-backflow valve in the inner conical connector of the PICC and can expand / pass through the valve, and therefore smoothness of a liquid channel is achieved, and conventional CVP measurement can be conducted on the PICC with the anti-backflow valve.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical conversion connector. Background Art

[0002] Central venous pressure (CVP) refers to the pressure in the right atrium and the thoracic segments of the superior and inferior vena cava. It can be used to assess a patient's blood volume, cardiac function, and vascular tone. It is a widely used clinical monitoring indicator with clinical value. Currently, monitoring CVP (central venous pressure) in clinical practice typically requires implantation of a CVC.

[0003] When using PICC for intravenous infusion, in order to prevent venous blood from flowing back, an anti-backflow valve will be set at the infusion connector end of the PICC. During normal infusion, the outer conical connector of the infusion set is inserted into the inner conical connector of the PICC. Since the outer conical connector of the infusion set fits tightly with the inner conical connector of the PICC and the fitting length is relatively fixed, the outer conical connector of the infusion set does not contact the anti-backflow valve in the inner conical connector of the PICC. Instead, it relies on the gravity of the liquid to open the valve, so that the infusion path is unobstructed and the infusion is completed. At the end of the infusion, the valve closes to prevent blood backflow. At this time, CVP monitoring cannot be performed through the infusion connector of the PICC. Therefore, we need to propose a medical conversion connector. Utility Model Content

[0004] The present utility model aims to provide a medical adapter. When CVP measurement is required through a PICC, the inner conical connector of the adapter is first connected to the outer conical connector of a CVP measuring device. The outer conical connector of the medical adapter is then inserted into the inner conical connector of the PICC. Since the guide shaft of the adapter is long and thin, it extends into the anti-reflux valve in the inner conical connector of the PICC, thereby expanding / passing through the valve, thereby achieving unobstructed liquid passage. Conventional CVP measurement can be performed on a PICC with an anti-reflux valve, thereby solving the problems raised in the above-mentioned background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a medical conversion joint, comprising an inner cone joint, the bottom end of the inner cone joint is provided with an outer cone joint for inserting into the inner cone of other infusion devices, the bottom end of the outer cone joint is provided with a guide shaft, the outer diameter of the guide shaft is less than 3.0 mm, and the length is 5-20 mm, a liquid outlet channel is provided inside the guide shaft, a liquid channel is provided inside the outer cone joint, and the liquid channel is connected to the inner cavity of the liquid outlet channel, the inner cone joint includes a joint body, and the inner cavity of the joint body is provided with a liquid inlet channel, and the liquid inlet channel is connected to the inner cavity of the liquid channel.

[0006] Preferably, the outer side wall of the inner cone joint is provided with an external thread connected to the infusion set, and the external thread is located at the top end of the inner cone joint.

[0007] Preferably, the outer portion of the outer cone joint is provided with an outer shell, and the inner side wall of the outer shell is provided with an internal thread connected to the inner cone of the infusion set.

[0008] Preferably, the outer surface of the shell is provided with anti-skid vertical lines, and the anti-skid vertical lines are provided in a plurality of groups, and the plurality of groups of the anti-skid vertical lines are distributed on the surface of the shell around the center of a circle.

[0009] Preferably, the top end of the guide shaft is rounded or chamfered, and the guide shaft is funnel-shaped.

[0010] Preferably, an anti-slip pad is bonded to the outer surface of the inner cone joint, and the anti-slip pad is arranged at the bottom end of the inner cone joint.

[0011] Preferably, the surface of the anti-slip pad is provided with anti-slip bumps, and the anti-slip bumps are provided in a plurality of groups, and the plurality of groups of anti-slip bumps are distributed around the center of a circle on the outer surface of the anti-slip pad.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a medical conversion connector. When CVP needs to be measured through a PICC, the inner cone connector of the conversion connector is first connected to the outer cone connector of a CVP measuring device, and then the outer cone connector of the medical conversion connector is inserted into the inner cone connector of the PICC. Since the guide shaft of the conversion connector is long and thin, it extends into the anti-reflux valve in the inner cone connector of the PICC, can expand / pass through the valve, thereby achieving unobstructed liquid passage, and conventional CVP measurement can be performed on the PICC with an anti-reflux valve.

[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the structure of the utility model with the outer shell and anti-slip pad removed;

[0017] Figure 3 It is a structural schematic diagram of a partial section of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the liquid inlet channel, liquid outlet channel and liquid channel cross section of the utility model.

[0019] In the figure: 1. Inner cone joint; 11. Joint body; 12. Liquid inlet channel; 2. Outer cone joint; 3. Guide shaft; 4. Liquid outlet channel; 5. Liquid channel; 6. External thread; 7. Outer shell; 8. Internal thread; 9. Anti-slip vertical grooves; 10. Anti-slip pad; 21. Anti-slip bump. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a medical conversion joint, including an inner cone joint 1, the bottom end of the inner cone joint 1 is provided with an outer cone joint 2 for inserting into the inner cone of other infusion devices, the bottom end of the outer cone joint 2 is provided with a guide shaft 3, the outer diameter of the guide shaft 3 is less than 3.0 mm, and the length is 5-20 mm, the interior of the guide shaft 3 is provided with a liquid outlet channel 4, the outer cone joint 2 is provided with a liquid channel 5, the liquid channel 5 is connected with the inner cavity of the liquid outlet channel 4, the inner cone joint 1 includes a joint body 11, the inner cavity of the joint body 11 is provided with a liquid inlet channel 12, the liquid inlet channel 12 is connected with the inner cavity of the liquid channel 5, the inner cone joint 1 is a semi-rigid joint, and the material of the semi-rigid joint is a polymer material.

[0022] When CVP needs to be measured through a PICC, the inner conical connector 1 of the adapter is first connected to the outer conical connector of the CVP measuring device, and then the outer conical connector 2 of the medical adapter is inserted into the inner conical connector of the PICC. Since the guide shaft 3 of the adapter is long and thin, it extends into the anti-reflux valve in the inner conical connector of the PICC, and can expand / pass through the valve, thereby achieving unobstructed liquid passage, and conventional CVP measurement can be performed on the PICC with an anti-reflux valve.

[0023] The outer wall of the inner cone connector 1 is provided with an external thread 6 connected to the infusion set. The external thread 6 is located at the top of the inner cone connector 1. The setting of the external thread 6 facilitates the connection between the inner cone connector 1 and the outer cone connector of the CVP measuring device, and can assist in fixation, thereby improving the stability of the conversion structure after being connected to the outer cone connector of the CVP measuring device.

[0024] The outer surface of the outer cone connector 2 is provided with an outer shell 7, and the inner side wall of the outer shell 7 is provided with an internal thread 8 connected to the inner cone of the infusion set. When the outer cone connector 2 is inserted into the inner cone connector of the PICC, rotating the outer shell 7 can drive the internal thread 8 to rotate. The internal thread 8 of the outer shell 7 can be threadedly connected and assembled with the inner cone connector of the PICC, thereby improving the stability after connection.

[0025] The outer surface of the shell 7 is provided with anti-slip vertical grooves 9, and several groups of anti-slip vertical grooves 9 are provided. Several groups of anti-slip vertical grooves 9 are distributed on the surface of the shell 7 around the center of the circle. Through the setting of the anti-slip vertical grooves 9, the friction between the medical staff's hands and the shell 7 is improved, which facilitates the connection between the outer cone connector 2 and the inner cone connector of the PICC and avoids slipping during connection.

[0026] The top end of the guide shaft 3 is rounded or chamfered, and the guide shaft 3 is funnel-shaped. Due to the shape of the guide shaft 3, it can be smoothly inserted into the anti-reflux valve in the inner conical connector of the PICC, and can open / pass through the valve, thereby improving the smoothness of the guide shaft 3 inserted into the anti-reflux valve in the inner conical connector of the PICC.

[0027] An anti-slip pad 10 is bonded to the outer surface of the inner cone joint 1. The anti-slip pad 10 is located at the bottom end of the inner cone joint 1. The setting of the anti-slip pad 10 increases the friction when medical staff pick up the inner cone joint 1, making it easier for the inner cone joint 1 to be connected to the outer cone joint of the CVP measuring device.

[0028] The surface of the anti-slip pad 10 is provided with anti-slip bumps 21, and the anti-slip bumps 21 are provided in several groups. Several groups of anti-slip bumps 21 are distributed around the center of the circle on the outer surface of the anti-slip pad 10. Through the setting of the anti-slip bumps 21, the friction between the anti-slip pad 10 and the hands of medical staff is increased, thereby improving the anti-slip effect of the anti-slip pad 10.

[0029] During specific use: the medical staff picks up the conversion connector, first inserts the inner conical connector 1 into the outer conical connector of the CVP measuring device, then rotates the inner conical connector 1, and connects it to the outer conical connector of the CVP measuring device through the outer thread 6, and then inserts the outer conical connector 2 of the medical conversion connector into the inner conical connector of the PICC, rotates the outer shell 7, and connects it to the inner conical connector of the PICC through the inner thread 8. Since the guide shaft 3 of the conversion connector is long and thin, it extends into the anti-reflux valve in the inner conical connector of the PICC, and can expand / pass through the valve, thereby achieving unobstructed liquid passage, and conventional CVP measurement can be performed on the PICC with an anti-reflux valve.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical conversion connector, comprising an inner cone connector (1), characterized in that: The bottom end of the inner cone joint (1) is provided with an outer cone joint (2) for inserting into the inner cone of other infusion devices, the bottom end of the outer cone joint (2) is provided with a guide shaft (3), the outer diameter of the guide shaft (3) is less than 3.0 mm, and the length is 5-20 mm, the interior of the guide shaft (3) is provided with a liquid outlet channel (4), the outer cone joint (2) is provided with a liquid channel (5), the liquid channel (5) is communicated with the inner cavity of the liquid outlet channel (4), the inner cone joint (1) includes a joint body (11), the inner cavity of the joint body (11) is provided with a liquid inlet channel (12), and the liquid inlet channel (12) is communicated with the inner cavity of the liquid channel (5).

2. The medical adapter according to claim 1, characterized in that: The outer side wall of the inner cone connector (1) is provided with an external thread (6) connected to an infusion set, and the external thread (6) is located at the top end of the inner cone connector (1).

3. The medical adapter according to claim 1, characterized in that: The outer portion of the outer cone joint (2) is provided with an outer shell (7), and the inner side wall of the outer shell (7) is provided with an inner thread (8) connected to the inner cone of the infusion device.

4. The medical adapter according to claim 3, characterized in that: The outer surface of the shell (7) is provided with anti-skid vertical lines (9), and the anti-skid vertical lines (9) are provided in a plurality of groups, and the plurality of groups of anti-skid vertical lines (9) are distributed around the center of a circle on the surface of the shell (7).

5. The medical adapter according to claim 1, characterized in that: The top end of the guide shaft (3) is rounded or chamfered, and the guide shaft (3) is funnel-shaped.

6. The medical adapter according to claim 1, characterized in that: An anti-slip pad (10) is bonded to the outer surface of the inner cone joint (1), and the anti-slip pad (10) is arranged at the bottom end of the inner cone joint (1).

7. The medical adapter according to claim 6, characterized in that: The surface of the anti-skid pad (10) is provided with anti-skid bumps (21), and the anti-skid bumps (21) are provided in a plurality of groups. The plurality of groups of anti-skid bumps (21) are distributed around the center of a circle on the outer surface of the anti-skid pad (10).

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