Medical device handles

Abstract

The present invention relates to a medical device handle, the medical device comprises a catheter, the catheter is connected to the handle; a straight tube is sleeved at the end of the catheter, the straight tube is coaxial with the catheter, and a gap is left between them, the gap space is divided into an upper and lower part, the upper part is filled with UV glue, the UV glue is cured by ultraviolet light, and the outer surface of the upper part of the catheter is connected with the inner surface of the upper part of the straight tube; the lower part is filled with UV glue, the UV glue is cured by ultraviolet light, and the outer surface of the lower part of the catheter is connected with the inner surface of the lower part of the straight tube; the cured UV glue and the straight tube together constitute the handle. The installation method adopts a two-stage curing method. The design is reasonable, the structure is simple, and the yield rate of the handle connection is greatly improved.

Description

Technical Field

[0001] The invention relates to medical equipment, and in particular to a medical equipment handle. Background Art

[0002] Catheter-type medical devices need to be connected to handles to facilitate the operation of the catheter outside the patient's body during clinical application. The connection between the catheter and the handle is generally made of UV glue, which is bonded together by UV light curing. The base material of the catheter bonding part is generally made of nylon, Pebax and other materials. These materials have low surface energy and are difficult for UV glue to adhere to. They are difficult to bond. The handle material is generally polycarbonate, which has a high surface energy and is easy for UV glue to adhere to. It is a substrate that is easier to bond. Summary of the invention

[0003] The invention provides a medical device handle.

[0004] The technical solution of the present invention:

[0005] A medical device handle, the medical device comprises a catheter, the catheter is connected to the handle; a straight tube is sleeved on the end of the catheter, the straight tube and the catheter are coaxial, and a gap is left between them, the gap space is divided into an upper and lower part, the upper part is filled with UV glue, the UV glue is cured by ultraviolet light, and the outer surface of the upper part of the catheter is connected with the inner surface of the upper part of the straight tube; the lower part is filled with UV glue, the UV glue is cured by ultraviolet light, and the outer surface of the lower part of the catheter is connected with the inner surface of the lower part of the straight tube; the cured UV glue and the straight tube together constitute the handle.

[0006] The installation method of the medical device handle comprises the following steps:

[0007] 1) Assemble the catheter

[0008] A lining core is inserted into the straight pipe, and the lining core passes through the straight pipe; then the lining core is passed into the interior of the pipe body, and the pipe body is guided to reach the straight pipe to ensure that the guide tube is coaxial with the straight pipe.

[0009] 2) First stage curing

[0010] Insert the syringe filled with UV glue into the gap between the catheter and the straight tube, push the syringe to the lower end of the catheter, and inject UV glue to the half of the height of the straight tube. This completes the injection of UV glue in the lower part, pull out the syringe, and use the ultraviolet light guide device to irradiate UV light from top to bottom (at an angle between 15-75°) to cure the UV glue in the lower part, which is the first stage of curing.

[0011] 3) Second stage curing

[0012] Insert the syringe into the gap between the tube body and the straight tube, push the syringe to the upper edge of the lower UV glue, inject UV glue while moving the syringe until the UV glue fills the straight tube, and the injection of UV glue in the upper part is completed. Remove the syringe, and then use the ultraviolet light guide device to irradiate UV light from bottom to top (angle between 15-75°) to cure the UV glue in the upper part, that is, the second section of UV glue is cured; complete the installation of the handle.

[0013] Considering that, in the actual production process, since the UV glue changes from liquid to solid during UV curing, there is volume shrinkage. When UV light is irradiated, the UV glue on the handle side contacts the light first, and the UV glue on the catheter side contacts the light last, and the adhesion of the UV glue on the handle is higher than that on the catheter, so the glue layer is peeled off from the catheter side, and there is a 30-40% defective rate in the handle connection; according to the directional shrinkage characteristics of UV glue, UV curing is divided into two stages; during the first stage of curing, the UV glue fills the space under the handle, and the UV light irradiates from top to bottom. The upper UV glue contacts the light first, so the UV glue shrinks upward, ensuring that the middle section of the handle is connected intactly; during the second stage of curing, the UV glue fills the remaining half of the handle, and the UV light irradiates from bottom to top. The UV glue at the bottom of the handle contacts the light first, so the UV glue shrinks downward, and the UV glue at the upper part of the handle will also fill the small space of the product that shrinks due to curing due to gravity; not only ensuring that the middle section of the handle is connected intactly, but also playing a role of reinforcing again to prevent the glue layer from detaching.

[0014] The invention has the advantages of reasonable design, simple structure and greatly improved handle connection yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram of the handle installation.

[0016] Figure 2 yes Figure 1 Schematic cross-section diagram of .

[0017] Figure 3 This is a schematic diagram of UV glue curing in the lower part.

[0018] Figure 4 This is a schematic diagram of UV glue curing in the upper part.

[0019] In the figure, the catheter 1, the handle 2, the connecting straight tube 2-1, the UV glue 2-2 on the upper part, and the UV glue 2-3 on the lower part. DETAILED DESCRIPTION

[0020] like Figure 1-4A medical device handle, the medical device comprises a catheter 1, the catheter 1 is connected to a handle 2; the end of the catheter 1 is covered with a straight tube 2-1, the straight tube 2-1 is coaxial with the catheter 1, and a gap is left between them, and the gap space is divided into an upper and lower part; the end of the catheter is covered with a straight tube, the straight tube is coaxial with the catheter, and a gap is left between them, and the gap space is divided into an upper and lower part, the upper part is filled with UV glue 2-2, the UV glue 2-2 is cured by ultraviolet light, and the outer surface of the upper part of the catheter 1 is connected with the inner surface of the upper part of the straight tube 2-1; the lower part is filled with UV glue 2-3, the UV glue 2-3 is cured by ultraviolet light, and the outer surface of the lower part of the catheter 1 is connected with the inner surface of the lower part of the straight tube 2-1; the cured UV glue 2-2, 2-3 and the straight tube together constitute the handle 2.

[0021] The installation method of the medical device handle comprises the following steps:

[0022] 1) Assemble the catheter

[0023] A liner core is inserted into the straight tube 2-1, and the liner core passes through the straight tube 2-1; then the liner core is inserted into the interior of the catheter 1, and the catheter 1 is guided to reach the straight tube 2-1 to ensure that the catheter 1 is coaxial with the straight tube 2-1.

[0024] 2) First stage curing

[0025] Insert the syringe filled with UV glue into the gap between the catheter 1 and the straight tube 2-1, push the syringe to the lower end of the catheter 1, and inject UV glue to the half of the height of the straight tube 2-1, that is, the injection of the lower part of the UV glue 2-3 is completed, pull out the syringe, and then use the ultraviolet light guide device to irradiate UV light from top to bottom (angle between 15-75°) to cure the lower part of the UV glue 2-3, that is, the first stage of curing.

[0026] 3) Second stage curing

[0027] Insert the syringe into the gap between the catheter 1 and the straight tube 2-1, push the syringe to the upper edge of the lower UV glue, inject UV glue while moving the syringe until the UV glue fills the straight tube 2-1, that is, the injection of the upper UV glue 2-2 is completed, remove the syringe, and then use the ultraviolet light guide device to irradiate UV light from bottom to top (angle between 15-75°) to cure the upper UV glue 2-2, that is, the second section of UV glue is cured; complete the installation of the handle 2.

[0028] The above disclosure is only a preferred embodiment of the present invention, but is not intended to limit itself. Any changes and modifications made by any technician in the field without violating the spirit and connotation of the present invention should fall within the protection scope of the present invention.

Claims

1. A medical device handle, the medical device comprising a catheter, the catheter being connected to the handle; The end of the catheter is covered with a straight tube, which is coaxial with the catheter and has a gap between them. The gap is divided into an upper and lower part. The upper part is filled with UV glue, which is cured by ultraviolet light to connect the outer surface of the upper part of the catheter with the inner surface of the upper part of the straight tube; the lower part is filled with UV glue, which is cured by ultraviolet light to connect the outer surface of the lower part of the catheter with the inner surface of the lower part of the straight tube; the cured UV glue and the straight tube together constitute the handle; The method for installing the medical device handle comprises the following steps: 1) Assemble the catheter body A lining core is inserted into the straight pipe, and the lining core passes through the straight pipe; then the lining core is inserted into the inside of the catheter, and the catheter is guided to reach the straight pipe to ensure that the catheter and the straight pipe are coaxial; 2) First stage curing Insert the syringe filled with UV glue into the gap between the catheter and the straight tube, push the syringe to the bottom of the catheter, and inject UV glue to the half of the height of the straight tube. This completes the injection of UV glue in the lower part, pull out the syringe, and then use the ultraviolet light guide device to irradiate UV light from top to bottom to cure the UV glue in the lower part, which is the first stage of curing. 3) Second stage curing Insert the syringe into the gap between the catheter and the straight tube, push the syringe to the upper edge of the lower part of the UV glue, inject UV glue while moving the syringe until the UV glue fills the handle, and the injection of UV glue in the upper part is completed. Remove the syringe, and then use the ultraviolet light guide device to irradiate UV light from bottom to top to cure the UV glue in the upper part, that is, the second section of UV glue is cured; complete the installation of the handle.

2. The medical device handle according to claim 1, characterized in that: The irradiation angle of the UV light is 15-75°.

Images