Patent Description:
Currently, when a central venous catheterization procedure is performed, e.g. peripherally inserted central catheter (PICC) and central venous catheter (CVC), a catheter needs to be secured in place to prevent catheter displacements or even unplanned catheter withdrawals. Common catheter fixation methods include adhesive tape fixation and suture fixation. When an adhesive tape is used for fixation, the adhesive tape would leave adhesive tape residue on the catheter, making the site prone to bacterial growth, and potentially causing phlebitis and other issues. A suture fixation refers to suturing wings of the catheter directly to the skin. This technique, however, may cause pain or even tissue inflammation. In addition to the aforementioned methods, catheter fixers can be found in the prior art. However, these fixers come in a variety of models due to the diversity of shapes and sizes of catheters; selecting the right fixer thus becomes more difficult. Moreover, the overall space taken up by catheter fixers in the inventory is also increased due to the number of different catheters stored.

As a result, a sterile catheter fixer that continues to be sought after in this field is one that leaves no adhesive tape residue, incurs no damage to the skin when removed, can be effectively secured, and is applicable to different catheters.

<CIT> relates to a universal device for securing a catheter on a patient including a base which optionally has one or more locating elements for positioning or securing a catheter or catheter fitting of various shapes or sizes. The base optionally includes a recessed or flat receiving area defined by locating elements arranged to hold or receive a catheter or catheter fitting. Additional locating elements may be positioned elsewhere for receiving or holding a flange or wing of a catheter fitting. A cover is removably or permanently connected to the base and may optionally have one or more top openings for receiving tabs or extensions of a catheter fitting. The cover may optionally include one or more capture ridges for restraining a catheter or catheter fitting of various shapes or sizes on the base or on the retention plate. The cover may also include one or more tabs or contact bars.

<CIT> relates to a medical catheter fixer, including a flexible base plate with two hinged buckles and two movable positioning rods.

<CIT> relates to a securement device for securing a medical implement, such as a catheter to the body of a patient. The device comprises a pad or base having adhesive on at least a portion of the bottom surface for securing the pad to the body of a patient. A fixed plate and a rotatable adjustable plate are affixed to the pad. The adjustable plate is rotated with respect to the fixed plate to secure a catheter. Posts can be provided on the fixed plate and the adjustable plate to secure a winged catheter. A bracket can be affixed to a fixed plate or an adjustable plate and a cooperating tab can be affixed to the other plate for securing a catheter there between. In a modification, a fixed plate is affixed to the pad and a pair of adjustable plates can be rotatably secured on the fixed plate. Secured on the fixed plate are upright tabs and secured on the adjustable plates are brackets that are adapted to cooperate with the tabs. The adjustable plates can be rotatably moved so as to retain a catheter between the respective cooperating brackets and tabs. In a further modification, a base is secured to a pad and a pair of plates or arms are pivotally mounted on the base for rotation with respect to one another. Complementary pawl and ratchet members are used to enable limited rotation of the plates or arm with respect to one another and to fix the plates or arms in selected adjustment position.

The disclosed catheter fixer at least partially solves the existing problems of adhesive tape residue or skin damage during removal.

The disclosed catheter fixing assembly is configured to fix a catheter. The catheter is provided with a catheter fixing wing, the catheter fixing wing comprising a fixing wing body and wings disposed on two sides of the fixing wing body. The catheter fixing assembly comprises a base and wing fixing portions. The base comprises an adhering surface and a fixing surface. The adhering surface is configured to adhere the base to the skin. The the wing fixing portions are configured to detachably fix the wings on the fixing surface.

A central area on the fixing surface is provided with a groove configured to accommodate the fixing wing body, such that the wings can be accommodated by areas of the fixing surface at two sides of the groove.

In one embodiment, rotation shafts are included and vertically disposed on the areas of the fixing surface at two sides of the groove. The wing fixing portions are rotatably connected to the rotation shafts. When the wing fixing portions are rotated to a first position, the wings can be separated from the catheter fixing assembly. When the wing fixing portions are rotated to a second position, the wing fixing portions are superposed on the wings to fix the wings on the fixing surface.

The wing fixing portion is provided with a through hole, the diameter of the through hole corresponds to the diameter of the rotation shaft, the through hole has an opening at one side thereof, an opening of an orthogonal projection of the opening on an axial section of the through hole is smaller than the diameter of the rotation shaft; during assembling, the rotation shaft enters the wing fixing portion through the opening by deformation of material under a force.

The base is provided with snaps, the wing fixing portions are provided with slots, and the snaps are engaged to the slots when the wing fixing portions are rotated to the second position, thus fixing the wing fixing portions to the base.

The wing fixing portions are further provided with protrusions configured to be grabbed to release the engagement between the snaps and the slots when the wing fixing portions is away from the second position.

One side of the wing fixing portion facing the fixing surface is provided with a wing accommodation slot configured to accommodate the wing when the wing fixing portion is rotated to the second position.

The areas of the fixing surface at two sides of the groove are provided with limiting columns configured to match with round holes on the wings to limit positions of the wings when the wing fixing portions are rotated to the second position.

The wing accommodation slot is provided with multiple pressing portions configured to be in contact with the fixing wing and to incur deformation under compression when the wing fixing portion is rotated to the second position.

There are multiple pressing portions; orthogonal projections of the multiple pressing portions on the fixing surface are located in positions close to the groove.

The adhering surface is provided with an adhesive tape configured to adhere the base to the skin.

In one embodiment, the catheter fixer comprises a base and wing fixing portions. The base comprises an adhering surface and a fixing surface; the adhering surface is configured to adhere the base to the skin; and the wing fixing portions are configured to detachably fix wings on the fixing surface. The wings of the catheter are fixed to the base through the wing fixing portions. An adhesive tape is disposed on one side of the base facing the skin, such that the adhesive tape is prevented from being adhered to the catheter, thereby avoiding leaving any adhesive tape residue on the catheter.

where: <NUM>-Base; <NUM>-Fixing surface; <NUM>-Groove; <NUM>-Rotation shaft; <NUM>-Snap; <NUM>-Wing fixing portion; <NUM>-Through hole; <NUM>-Blocking portion; <NUM>-Wing accommodation slot; <NUM>-Pressing portion; <NUM>-Protrusion; <NUM>-Limiting column.

<FIG> is a schematic structural diagram of a catheter fixing assembly; and <FIG> is a schematic structural diagram of a base. As shown in <FIG>, this embodiment provides a catheter fixing assembly comprising a base <NUM> and wing fixing portions <NUM>. The base comprises an adhering surface and a fixing surface <NUM>, the adhering surface is configured to adhere the base to the skin, and the wing fixing portions <NUM> are configured to detachably fix wings on the fixing surface <NUM>.

It should be noted that in one embodiment the catheter fixing assembly is configured to fix a catheter. The catheter is provided with a catheter fixing wing. The catheter fixing wing comprises a fixing wing body and wings disposed on two sides of the fixing wing body.

Examples for models of the catheter include Health line, Arrow, Bard, and the like.

In the catheter fixer, the wings of the catheter are fixed to the base by the wing fixing portions. An adhesive tape is disposed on one side of the base facing the skin, such that the adhesive tape is prevented from being adhered to the catheter, thereby avoiding leaving adhesive tape residue on the catheter.

<FIG> is a schematic structural diagram of a base. Referring to <FIG> together, in this embodiment, a central area on the fixing surface <NUM> of the base <NUM> is provided with a groove <NUM> configured to accommodate the fixing wing body, so that the wings can be carried by areas of the fixing surface <NUM> at two sides of the groove <NUM>. By disposing the groove <NUM> on the fixing surface <NUM> of the base <NUM>, when the catheter is placed on the base, the fixing wing body is located in the groove <NUM>, and the wings are supported by the areas of the fixing surface <NUM> at two sides of the groove <NUM>, so that the base can support the catheter fixing wings more stably.

In one embodiment, the shape and the size of the groove <NUM> are identical or similar to those of the fixing wing body, thus assisting fixation of the catheter by the groove <NUM>.

In this embodiment, the base <NUM> further comprises rotation shafts <NUM> vertically disposed on the areas of the fixing surface <NUM> at two sides of the groove <NUM>. The wing fixing portions <NUM> are rotatably connected to the rotation shafts <NUM>. When the wing fixing portions <NUM> are rotated to a first position, as shown in <FIG>, the catheter fixing wings can be separated from the catheter fixing assembly; that is, the catheter fixing wings can be disassembled or assembled in this case. When the wing fixing portions <NUM> are rotated to a second position, as shown in <FIG>, the wing fixing portions <NUM> are superposed on and press against the wings to fix the catheter fixing wings on the fixing surface <NUM>.

The catheter is fixed when the wing fixing portions <NUM> are superposed on and press against the wings. The term "fixed" refers to the limiting the catheter from moving back and forth, left and right, up and down.

The number of the rotation shafts <NUM> should be consistent with the number of the wing fixing portions <NUM>. The number of the wing fixing portions <NUM> should be consistent with the number of the wings on the catheter. Therefore, the number of the wing fixing portions <NUM> is two, and the number of the rotation shafts <NUM> is two.

In this embodiment, as shown in <FIG>, the wing fixing portion <NUM> is provided with a through hole <NUM>, the diameter of the through hole <NUM> corresponds to the diameter of the rotation shaft <NUM>, the through hole <NUM> has an opening at one side thereof, a distance of a projection of the opening on an axial section of the through hole <NUM> is smaller than the diameter of the rotation shaft <NUM>. Moreover, during assembling, the rotation shaft <NUM> enters the wing fixing portion <NUM> through the opening by deformation of partial material of a blocking portion <NUM> under a force.

That the diameter of the through hole <NUM> corresponds to the diameter of the rotation shaft <NUM> refers to that the diameter of the through hole <NUM> is identical or similar to that of the rotation shaft <NUM>.

A material of the wing fixing portion <NUM>, at least at a part of the blocking portion <NUM> which is close to two ends of the opening, is an elastic material.

With the above structure, the rotation shaft <NUM> can enter the wing fixing portion by engagement, so as to avoid adding an rotation shaft mounting structure.

The material of the wing fixing portion <NUM> comprises polycarbonate (PC), polypropylene (PP), acrylonitrile-butadiene-styrene copolymer (ABS), or polyvinyl chloride (PVC) material. In one embodiment, the material of the wing fixing portion <NUM> is an elastic material.

In one embodiment, the wing fixing portion <NUM> is transparent so that a user can observe the fixing of the wing through the transparent wing fixing portion <NUM>.

As shown in <FIG>, in this embodiment, the base <NUM> is provided with snaps <NUM>, the wing fixing portions <NUM> are provided with slots, and the snaps <NUM> are engaged to the slots when the wing fixing portions <NUM> are rotated to the second position, thus fixing the wing fixing portions <NUM> to the base <NUM>.

In this embodiment, as shown in <FIG>, the wing fixing portions <NUM> are further provided with protrusions <NUM> configured to be grabbed by the user to release the engagement between the snaps and the slots when the wing fixing portions <NUM> is away from the second position. The protrusion <NUM> can be disposed on a sidewall of the wing fixing portion <NUM>, or disposed on an upper surface of the wing fixing portion <NUM>, as long as it can be ensured that the protrusion <NUM> can be grabbed by the user when the wing fixing portion <NUM> is located in the second position.

In addition, the upper surface of the wing fixing portion <NUM> is further provided with a friction portion configured to be pressed and pushed toward a direction away from the second position for when the wing fixing portion <NUM> is to be away from the second position, such that the wing fixing portion <NUM> is away from the second position. The friction portion may be a groove, a protrusion, an adhesive surface, or the like, as long as a function of increasing the friction can be achieved.

In this embodiment, as shown in <FIG>, one side of the wing fixing portion <NUM> facing the fixing surface <NUM> is provided with a wing accommodation slot <NUM> configured to accommodate the wing when the wing fixing portion <NUM> is rotated to the second position.

Further, the areas of the fixing surface at two sides of the groove <NUM> are provided with limiting columns <NUM>. The wings are provided with round holes. When the wing fixing portions <NUM> are rotated to the second position, the limiting columns <NUM> match the round holes on the wings to limit positions of the wings.

Further, the wing accommodation slot <NUM> is provided with pressing portions <NUM>, and a material of the pressing portions <NUM> is an elastic material. When the wing fixing portion <NUM> is rotated to the second position, the pressing portions <NUM> are in contact with the wing and pressed against the wing to generate elastic deformation, thus applying pressure to the wing. The pressing portions <NUM> are made of the elastic material, and thus can be used to press against wings having different thicknesses and in different sizes.

In one embodiment, there are multiple pressing portions <NUM>. Orthogonal projections of the multiple pressing portions <NUM> disposed on the fixing surface are located in positions close to the groove <NUM>. The multiple pressing portions <NUM> extend along an edge of the groove <NUM> when the wing fixing portion <NUM> is rotated to the second position, thus uniformly pressing against the wing.

In a case that the pressing portions <NUM> are simultaneously disposed both in the wing accommodation slots <NUM> and in the areas of the fixing surface at two sides of the groove <NUM>. In one embodiment, the pressing portions <NUM> disposed in the wing accommodation slots <NUM> and the pressing portions <NUM> disposed in the areas of the fixing surface located at two sides of the groove <NUM> are arranged in a staggered manner, such that different positions of the wings may be pressed against.

Claim 1:
A catheter fixing assembly, configured to fix a catheter, the catheter being provided with a catheter fixing wing, the catheter fixing wing comprising a fixing wing body and wings disposed on two sides of the fixing wing body, wherein the catheter fixing assembly comprises:
a base (<NUM>) and wing fixing portions (<NUM>);
wherein the base (<NUM>) comprises an adhering surface and a fixing surface (<NUM>);
wherein the adhering surface is configured to adhere the base (<NUM>) to the skin; and
wherein the wing fixing portions (<NUM>) are configured to detachably fix the wings on the fixing surface (<NUM>),
wherein the fixing surface (<NUM>) comprises a central area with a groove (<NUM>) having two sides configured to accommodate the fixing wing body, so that the wings can be carried by areas of the fixing surface (<NUM>) at two sides of the groove (<NUM>),
wherein the catheter fixing assembly further comprises rotation shafts (<NUM>) vertically disposed on the areas of the fixing surface (<NUM>) at two sides of the groove (<NUM>);
wherein the wing fixing portions (<NUM>) are rotatably connected to the rotation shafts (<NUM>) between a first position and a second position;
wherein in the first position the wings can be separated from the catheter fixing assembly;
wherein in the second position the wing fixing portions (<NUM>) are superposed on the wings to fix the wings on the fixing surface (<NUM>).