Catheter fixation device

Abstract

To create a catheter fixation device that can stably secure a catheter to the body surface without requiring excessive force. [Solution] The catheter fixing device 100 is made of a flexible material and comprises a catheter holding member 150 that holds the catheter 200 and a holder portion 110 to which the catheter holding member 150 is detachably attached. The catheter holding member 150 has a plate-shaped portion including a catheter insertion portion provided with a catheter insertion groove 154 through which the catheter 200 is slidably inserted, and the holder portion 110 is deformed so that the angle between the portions on both sides of the catheter insertion groove 154 of the plate-shaped portion becomes smaller, and the catheter holding member 150 is attached in a state in which the groove width of the catheter insertion groove 154 is reduced.

Description

[Technical Field]

[0001] This disclosure relates to catheter fixation devices, and more particularly to catheter fixation devices for fixing a catheter to the surface of a patient's body. [Background technology]

[0002] In some cases, a thin tube called a catheter is inserted into a patient's body to deliver medication or other substances into the body, or to extract bodily fluids from the body. Depending on the patient's movements, the insertion site of the catheter may be pulled, potentially causing the catheter to become dislodged. Therefore, the portion of the catheter that is pulled out of the body is secured to the body surface to prevent the insertion site from being pulled.

[0003] While securing a catheter to the body surface with tape is a simple method, thin catheters have the problem of easily shifting under even slightly strong force. Therefore, a method is being considered in which a tubular catheter fixation device with winged sections is attached to the catheter, and the winged sections of the fixation device attached to the catheter are secured to the body surface with tape. However, with only a tubular catheter fixation device, the holding force between the catheter and the fixation device is weak, and the fixation device can shift relative to the catheter.

[0004] To prevent the fixation device from shifting relative to the catheter, a fixation device has been proposed that has a rigid box clamp fitted into a wing-shaped clamp (see, for example, Patent Document 1). By attaching the catheter to the tubular part of the wing-shaped clamp and fitting the box clamp into the tubular part, the tubular part is compressed, so the catheter can be held in place by the wing-shaped clamp without shifting. By attaching the wing-shaped clamp attached to the catheter to a base that is attached to the body surface, the catheter can be stably fixed to the body surface. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-500538 [Summary of the Invention] [Problems to be Solved by the Invention]

[0006] However, in order to increase the holding force of the catheter by the wing clamp using the box clamp, it is necessary to fit the box clamp to the cylindrical portion so that the wing clamp is in a strongly compressed state. Therefore, a large force is required for fitting.

[0007] An object of the present disclosure is to realize a catheter fixing device that can stably fix a catheter to the body surface without requiring a large force. [Means for Solving the Problems]

[0008] One aspect of the catheter fixing device of the present disclosure includes a catheter holding member formed of a flexible material for holding a catheter, and a holder portion to which the catheter holding member is detachably attached. The catheter holding member has a plate-like portion including a catheter insertion portion provided with a catheter insertion groove through which the catheter is slidably inserted. The holder portion is configured such that the catheter holding member is attached in a state where the groove width of the catheter insertion groove is reduced by deforming the plate-like portion so that the angles formed by the portions on both sides sandwiching the catheter insertion groove of the plate-like portion are reduced.

[0009] According to one aspect of the catheter fixing device, the holder portion is in a state where the plate-like portion is deformed and the groove width of the catheter insertion groove is reduced. As a result, the catheter and the catheter holding member are in close contact with each other, and the frictional force can be efficiently increased. Therefore, it is not necessary to apply a large force as in a structure in which the catheter holding member is strongly compressed from one side through a box clamp or the like, and the catheter can be stably fixed to the body surface.

[0010] In one aspect of the catheter fixing device, the holder portion has a base portion disposed on the body surface side of the patient and a convex portion protruding from the base portion in a direction away from the body surface, and the convex portion can be positioned below the catheter insertion portion groove when the catheter holding member is attached to the holder portion. With such a configuration, when the catheter holding member is placed on the holder, a part of the plate-like portion can be naturally deformed along the shape of the top surface side of the holder. Therefore, instead of the user consciously deforming the plate-like portion, it becomes possible to naturally lead the plate-like portion into a deformed state by the operation of attaching the catheter holding member to the holder.

[0011] In one aspect of the catheter fixing device, the plate-like portion has a through hole, and the holder portion can have a pin member that protrudes from the base portion and is inserted into the through hole in a state where the plate-like portion is deformed. With such a configuration, it is possible to make the plate-like portion more likely to remain in a deformed state by the pin member, and to prevent a situation where the fixing position of the plate-like portion shifts and the groove width widens.

[0012] In one aspect of the catheter fixing device, the plate-like portion has a pair of wing portions extending from the side of the catheter insertion portion, and the pair of wing portions are positioned at a lower height than the catheter insertion portion when the catheter holding member is attached to the holder portion, and the holder portion can have a pair of cover portions that sandwich the pair of wing portions between the base portion and the pair of cover portions respectively. With such a configuration, it is possible to keep the height dimension in a state where the catheter holding member is attached to the holder portion low and prevent it from bulging greatly from the body surface of the patient.

[0013] In one aspect of the catheter fixing device, the holder portion can have a base portion disposed on the body surface side of the patient and a cover portion that sandwiches and fixes the plate-like portion between the base portion in a state where the groove width of the catheter insertion groove is reduced. With such a configuration, it is possible to prevent the plate-like portion from returning to its state before deformation with a simple structure.

Effects of the Invention

[0014] The catheter fixation device of this disclosure allows for stable fixation of the catheter to the body surface without requiring significant force, thereby greatly improving operability. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing a catheter fixation device according to one embodiment. [Figure 2] This is a perspective view showing a catheter holding member according to one embodiment. [Figure 3] This is a perspective view showing a holder portion according to one embodiment. [Figure 4] This is a front view showing a catheter fixing device according to one embodiment. [Figure 5] This is a cross-sectional view along the VV line in Figure 1. [Figure 6] (a) is a cross-sectional view showing the catheter holding member before deformation, and (b) is a cross-sectional view showing the catheter holding member after deformation. [Figure 7] This is a front view showing deformation of the catheter insertion groove. [Modes for carrying out the invention]

[0016] As shown in Figures 1 to 5, a catheter fixation device 100 according to one embodiment includes a catheter holding member 150 for holding a catheter 200 and a holder portion 110 to which the catheter holding member 150 is detachably attached. The catheter fixation device 100 can be attached to the patient's body surface using an adhesive pad 180. The catheter fixation device 100 can be used in any orientation, but in the following description, the side with the adhesive pad 180 will be described as the lower side and the opposite side as the upper side. Furthermore, the direction in which the catheter 200 extends will be described as the front-to-back direction, the up-and-down direction, and the direction perpendicular to the front-to-back direction as the left-to-right direction.

[0017] The catheter holding member 150 is a roughly plate-shaped member made of a flexible material and has a catheter insertion groove 154 in the center in the left-right direction through which the catheter 200 is inserted. The catheter holding member 150 is not particularly limited, but can be made of soft polyvinyl chloride, soft polyurethane, various types of rubber and elastomers. Various types of elastomers can be used, such as olefin-based, styrene-based, silicone and polyurethane.

[0018] The inner diameter of the insertion hole 155 is designed to be slightly smaller than the outer diameter of the catheter 200 that is inserted and held. The insertion hole is widened by the catheter 200 inserted into the catheter insertion groove 154, allowing the catheter 200 to slide easily against the catheter holding member 150. Note that the inner diameter of the insertion hole 155 referred to here is the value when no external force is applied to the catheter holding member 150. The communication groove 156 is designed to be narrower than the inner diameter of the insertion hole 155 at least at the end on the insertion hole 155 side, and its width gradually increases from the insertion hole 155 side outwards. When the plate-shaped portion of the communication groove 156 is bent, the groove width becomes narrower compared to before bending, further preventing the catheter from coming out. For this reason, the catheter insertion groove 154 in this embodiment has a roughly keyhole-shaped cross-section when the insertion hole 155 and the communication groove 156 are combined.

[0019] By shaping the catheter insertion groove 154 in this way, it becomes easier to insert the catheter 200 into the catheter insertion groove 154 and less likely for the inserted catheter 200 to fall out. However, the insertion hole is not limited to a circular cross-section; for example, it can also be slit-shaped. Furthermore, the communication groove is not limited to a trapezoidal shape in which the width gradually increases towards the outside; for example, it can be a shape with a constant width or a slit-shaped shape with almost no gap. The overall shape of the catheter insertion groove is not limited to a roughly keyhole-shaped cross-section in which the width of the communication groove is narrower than the insertion hole; it can be various shapes such as a U-shaped or V-shaped cross-section.

[0020] On the other hand, when the catheter holding member 150 is attached to the holder portion 110 which is attached to the patient's body surface, the catheter holding member 150 deforms so that the width of the catheter insertion groove 154 becomes smaller. As a result, the inner surface of the catheter insertion groove 154 adheres strongly to the outer surface of the catheter 200, increasing the frictional force and restricting the sliding of the catheter holding member 150 relative to the catheter 200. Therefore, the catheter 200 can be stably fixed to the body surface without moving. Furthermore, since the configuration utilizes the reduction in diameter of the insertion hole 155 due to the bending of the plate-like portion to adhere to the entire circumference of the catheter 200, the frictional force can be increased more efficiently than with clamping devices such as box clamps that adhere from one side. Therefore, it is not necessary to apply a large force during fixing compared to clamping devices such as box clamps, and the catheter 200 can be stably fixed to the body surface, achieving high operability. In addition, since a box clamp is not required and fixing can be done with just two components, the catheter holding member 150 and the holder portion 110, costs can also be reduced. Furthermore, since the catheter holding member 150 can be moved freely before being attached to the holder portion 110, it is easy to readjust its position. The groove width of the catheter insertion groove 154 referred to here is the maximum groove width of the portion that comes into contact with the inserted catheter 200, and in this embodiment, it is the inner diameter of the insertion hole 155.

[0021] The width of the catheter insertion groove 154 can be reduced by deforming it so that the angle θ between the two sides of the catheter insertion groove 154 becomes smaller, as shown in Figure 6. Therefore, various configurations can be adopted as the holder portion that allow the catheter holding member 150 to be attached in a state in which such deformation has occurred.

[0022] Figure 6(a) shows the initial state of the catheter holding member 150 of this embodiment before deformation, and the angle θ between the wing portions 152 (plate-shaped portions) on both sides of the catheter insertion groove 154. a0 The angle is approximately 180°. Figure 6(b) shows the angle θ of the wing portion 152 in the deformed state, when the wing portion 152 is deformed to close. a1shows a state where it is about 160°. The angle formed by the wing part 152 is θ a0 θ smaller than a1 By setting it like this, the maximum groove width in the insertion hole 155 of the catheter insertion groove 154 becomes t1, which is smaller than the groove width t0 in the initial state.

[0023] In addition, the angle θ formed by the two sides sandwiching the catheter insertion groove 154 in the initial state a0 is the sum of the inclination angles θ of the lower surfaces of the two sides of the catheter insertion groove 154 with respect to the central axis of the catheter insertion groove 154 a0L and θ a0R The positions for evaluating the inclination angles θ a0L and θ a0R are, for example, positions p that are separated by twice the outer diameter φc of the catheter 200 inserted into the catheter insertion groove 154 across the central axis of the catheter insertion groove 154 L and p R By deforming the two sides sandwiching the catheter insertion groove 154 near the catheter 200, the groove width of the catheter insertion groove 154 can be efficiently reduced, and it becomes difficult for the catheter 200 to come out. θ a1 is the sum of the inclination angles θ of the lower surfaces of the two sides of the catheter insertion groove 154 at p L and p R in the state where the catheter holding member 150 is deformed. a0L and θ a0R That is the sum.

[0024] In the catheter holding member 150 of this embodiment, since the wing part 152 extends substantially horizontally in the initial state, the angle θ formed by the two sides sandwiching the catheter insertion groove 154 in the initial state a0 is about 180°. However, for example, when the wing part 152 extends obliquely upward and θ a0 is larger than 180°, or when the wing part 152 extends obliquely downward and is smaller than 180°, similarly, the angle θ formed by the two sides sandwiching the deformed catheter insertion groove 154 a1 is made smaller than the angle θ formed in the initial state a0 By deforming it like this, the groove width of the catheter insertion groove 154 can be made smaller.

[0025] Also, Figure 6(a) shows θ a0L and θ a0R This shows that the two values ​​are equal, but the angles of the left and right wing sections 152 are different, θ a0L and θ a0R Catheter holding members with different values ​​can be used in the same way. In Figure 6(b), the wing portion 152 is deformed equally on both sides and θ a1L and θ a1R Although they show a nearly equal state, it is also possible to have a configuration in which the parts on both sides of the catheter insertion groove 154 deform unevenly.

[0026] θ a1 θ a0 By making it a few degrees smaller than this, the groove width of the catheter insertion groove 154 can be reduced, making it more difficult for the inserted catheter 200 to slip out. From the viewpoint of stable retention, the change in angle θ between the parts on both sides of the catheter insertion groove 154 before and after deformation. a0 -θ a1 The angle is preferably 10° or more, more preferably 15° or more, and even more preferably 20° or more. The wing portion 152 protrudes horizontally, θ a0 When the angle is approximately 180°, the θ of the catheter holding member 150 when it is attached to the holder portion 110 and deformed is... a1 The angle is preferably 170° or less, more preferably 165° or less, and even more preferably 160° or less.

[0027] When at least a portion of both wing sections 152 are parallel or overlapping each other, θ a1 θ can be 0°. Also, if a part of the wing portion 152 is bent beyond the catheter insertion groove 154 to the opposite side, θ a1 It is also possible for θ to be a negative value. Even in this state, the catheter 200 is held stably. On the other hand, from the viewpoint of avoiding excessive deformation of the catheter holding member 150, θ a1 is, θ a0 Preferably 35% or more, more preferably 45% or more, and even more preferably 55% or more. a0When θ is approximately 180°, it is preferably 60° or more, more preferably 80° or more, and even more preferably 100° or more. However, θ a1 The value can be appropriately selected depending on the material and shape of the catheter holding member 150 and the thickness of the catheter 200.

[0028] When the catheter holding member 150 is deformed so that the angle between the parts on both sides of the catheter insertion groove 154 becomes smaller, the opening angle θ of the catheter insertion groove 154 is as shown in Figure 7. b The opening angle of the catheter insertion groove 154 is the angle formed by two straight lines connecting the upper end of the catheter insertion groove 154 and the lower end (open end) of the catheter insertion groove 154. The opening angle θ in Figure 7, shown by the solid line, is the opening angle θ in the state where the wing portion 152 is not deformed. b0 The angle is approximately 25°, and the opening angle θ when the wing section 152 is deformed is shown by the dashed line. b1 The angle is approximately 6°. Depending on the shape of the catheter insertion groove 154 and the diameter of the catheter 200, the change in the opening angle θ is considered to be necessary to adequately hold the catheter 200. b0 -θ b1 The angle is preferably 5° or more, more preferably 10° or more, and even more preferably 15° or more.

[0029] In this embodiment, the catheter holding member 150 is a plate-shaped plate portion, and specifically has a pair of wing portions 152 extending to both sides from the catheter insertion portion 151 in which the catheter insertion groove 154 is formed. The catheter insertion portion has a flattened shape in which the width dimension is longer than the height dimension, and specifically, the side surface of the catheter insertion portion is curved, while the top surface is flat.

[0030] In this embodiment, the holder portion 110 can be configured such that the catheter holding member 150 is attached in a state in which the angle between the pair of wing portions 152 is reduced. Specifically, the holder portion 110 has a base portion 111 that is placed on the patient's body surface side, a protrusion 131 with a substantially triangular cross-section formed on the base portion 111, and wing portion fixing portions 121 formed on both sides of the protrusion 131. The width dimension of the protrusion 131 is longer than the height dimension, preferably the width dimension is longer than twice the height dimension, so that the height when attached to the skin is reduced and the protrusion 131 and the wing portion fixing portions 121 are smoothly connected. When the wing portions 152 of the catheter holding member 150 are fixed to the wing portion fixing portions 121, the catheter insertion portion 151 with the catheter insertion groove 154 is placed on the vicinity of the apex of the protrusion 131. As a result, the angle θ between the portions on both sides of the catheter insertion groove 154 a1 To reduce the size of the catheter, the catheter holding member 150 deforms into a roughly V-shape around the catheter insertion portion 151. Consequently, the width of the catheter insertion groove 154 is reduced, making it difficult for the catheter 200 inserted into the catheter insertion groove 154 to easily come out.

[0031] In this embodiment, the angle θ between the portions on both sides of the catheter insertion groove 154 in its undeformed state a0 The angle is 180°, and the angle θ is the angle formed when it is attached to the holder part 110 and deformed. a1 This shows an example where the angle is approximately 160°. The angle θ is the angle in the undeformed state. a0 and the angle θ when mounted on the holder portion 110 a1 The various relationships shown above can be observed.

[0032] In this embodiment, the protrusion 131 has a gently curved top, making it easier for the lower surfaces of the catheter insertion portion 151 and the wing portion 152 to adhere closely to the upper surface of the protrusion 131. This allows the catheter holding member 150 to be stably held on the protrusion 131, and also reduces the likelihood of irregular forces being applied to the catheter holding member 150, thus preventing deformation that is different from the intended one. The protrusion 131 may be made into a different shape, such as a semicircle, if necessary. However, it is preferable to have a shape in which the radius of curvature at the top is small and the sides have straight or downwardly convex curved portions, rather than a shape in which the radius of curvature is constant throughout the entire protrusion 131, such as when it is part of a perfect circle. With such a configuration, the change in the inclination angle near the catheter insertion groove 154 can be greatly increased. Note that the protrusion 131 may also be omitted.

[0033] In this embodiment, the wing fixing portion 121 has a cover portion 125, and the wing portion 152 is sandwiched between the base portion 111 and the cover portion 125. Furthermore, the pair of wing fixing portions 121 are independent of each other, and the catheter insertion portion 151 is not covered by the cover portion 125. The catheter insertion portion 151 is placed on the protrusion portion 131, and the cover portion 125 does not cover the catheter insertion portion 151 that protrudes upward, so the height of the catheter fixing device 100 can be kept low.

[0034] In this embodiment, the wing fixing portion 121 has a surrounding wall 127 that rises from the base portion 111 and surrounds the wing portion 152 from three sides, and the cover portion 125 is fixed to the upper end of the surrounding wall 127 via a hinge. The cover portion 125 has a claw portion 134, and the surrounding wall 127 has a stepped portion 135 that engages with the claw portion 134. When the free end of the cover portion 125 is rotated to contact the surrounding wall 127, the claw portion 134 and the stepped portion 135 engage with each other and function as a locking portion 133 that fixes the position of the cover portion 125. This allows the wing portion 152 to be stably fixed between the cover portion 125 and the base portion 111.

[0035] By providing the surrounding wall 127, the alignment of the wing portion 152 becomes easier. Also, a space for inserting the wing portion 152 can be easily formed between the cover portion 125 and the base portion 111. Furthermore, it is preferable that the width dimension of the space for housing the catheter holding member 150 formed by the surrounding wall 127 be smaller than the width dimension of the catheter holding member 150 in its natural state before deformation. By doing so, it is possible to encourage the user to deform the catheter holding member 150 when attaching it, or for the surrounding wall 127 to act as a restricting wall that maintains the deformed state of the catheter holding member 150. However, the surrounding wall 127 may be provided only if necessary and may not be provided.

[0036] In this embodiment, the wing fixing portion 121 has a pin member 123 that protrudes from the base portion 111. The wing portion 152 has a through hole 157 through which the pin member 123 is inserted, making it easier to align the wing portion 152. The pin member 123 and the through hole 157 in the wing portion 152 may be provided as needed, or they may not be provided. The pin member can move in the width direction, and its movement may be restricted at a position where the catheter holding member is deformed.

[0037] The wing fixing part 121 is not limited to this configuration and can be configured in various ways to fix the wing 152. For example, the wing 152 can be fixed by applying pressure to it by making the distance between the cover part 125 and the base part 111 smaller than the thickness of the wing 152. Alternatively, the wing 152 can be fixed to the base part 111 without applying pressure to the wing 152 by making it difficult for the cover part 125 to touch the pin member 123 by covering the pin member 123. Furthermore, the wing 152 can be prevented from coming off by inserting a through hole 157 into a pin member having a head that prevents it from coming loose, or the wing 152 can be prevented from moving away from the pin member 123 by inserting a through hole 157 into the pin member 123 and then attaching a retaining cap to the pin member 123.

[0038] In this embodiment, the catheter holding member 150 has a catheter insertion portion 151 with a catheter insertion groove 154 formed therein, which is thicker than the wing portion 152. By forming the catheter insertion groove 154 in the thicker catheter insertion portion 151, the catheter insertion groove 154 can be made deeper, making it more difficult for the catheter 200 to slip out, while also ensuring the strength of the catheter insertion portion 151. Furthermore, by making the wing portion 152 thin, it becomes easier to deform the catheter holding member 150 by bending it, and it becomes easier to fix it to the wing portion fixing portion 121. For this reason, it is preferable that the height dimension of the wing portion 152 is shorter than the height dimension of the catheter insertion portion 151. The wing portion 152 can be made of a constant thickness, but for example, the wing portion can be made thinner on the side closer to the catheter insertion portion 151, while the side further away is thicker. However, the entire structure, including the catheter insertion portion 151 and the wing portion 152, can also be made of a substantially constant thickness.

[0039] In this embodiment, the catheter insertion portion 151 is longer in the front-rear direction than the wing portion 152. By increasing the length of the catheter insertion portion 151, the catheter 200 can be stably fixed. However, it is also possible to configure the catheter insertion portion 151 and the wing portion 152 to be aligned in the front-rear direction.

[0040] In this embodiment, the lower surface of the wing portion 152 is shown to be aligned with the lower surface of the catheter insertion portion 151. This configuration makes it easier for the upper surface of the convex portion 131 to overlap with the lower surface of the wing portion 152, improving the stability when the catheter holding member 150 is placed on the convex portion 131, and stabilizing the holding of the catheter 200 by the catheter insertion groove 154. However, the wing portion 152 may be connected to any part of the catheter insertion portion 151 in the height direction. For example, the wing portion 152 may be connected to the upper end of the catheter insertion portion 151, and the convex portion 131 may also be made into a complementary shape so as to overlap with the lower surface of the wing portion 152.

[0041] In this embodiment, an example is shown in which the angle between both wing portions 152 is 180° when no external force is applied to the catheter holding member 150. By adopting such a configuration, the catheter holding member 150 can be easily manufactured. However, the catheter holding member is not limited to this shape, and can also be a curved or bent plate shape such that the angle between both wing portions is acute or obtuse when no force is applied. If the angle between the wing portions is acute when no force is applied, it is preferable to adopt a holder portion that deforms and fixes both wing portions so that they overlap. In this case, since the wing portion fixing portion only needs to be in one place, the advantage is that the configuration of the holder portion can be simplified and the size of the fixing device can be reduced. If the angle between the wing portions is obtuse when no force is applied, the advantage is that the wing portions are less likely to get in the way when inserting the catheter into the catheter insertion groove. Furthermore, if the angle between the wings when attached to the holder is set to 180° to restrict the sliding of the catheter, the holder can be configured without any protrusions. Note that the deformation and fixation of both wings so that they overlap is not limited to wings where the angle between the wings is acute when no force is applied. In this case, the deformation of the wings may be maintained by providing a locking part on the wing itself to maintain the overlapping state of both wings, or by providing a locking member that grips the outer surface of the wings when they are overlapping. Such locking parts and locking members are fixed to the skin via the holder, covered with a cover or the like so that they cannot be operated from the outside.

[0042] In this embodiment, an example is shown in which the catheter holding member 150 is formed symmetrically in the front, back, left, and right directions. By making the front, back, left, and right directions symmetrical, operability is improved because it is not necessary to check the direction when attaching the catheter holding member 150 to the catheter 200. However, the catheter holding member can also be asymmetrical in at least one of the front, back, and left / right directions. For example, the length, width, and thickness of the left and right wings can be different, or the wings can be provided on only one side. If the wings are provided on only one side, it is preferable that the other side has a recess or the like for hooking a fingertip.

[0043] The holder portion to which the catheter retaining portion is attached is not limited to this configuration; for example, it can also have a configuration in which the cover portion slides horizontally. Furthermore, instead of providing a pin member or cover portion, the catheter retaining member can be fixed to the base portion using a film dressing material, medical tape, bandage, etc.

[0044] In this embodiment, the holder portion 110 is fixed on the adhesive pad 180. This configuration allows the holder portion 110 to be easily attached to the desired location on the patient's body surface. However, the holder portion 110 can also be fixed to the body surface without using the adhesive pad 180. For example, wings can be provided extending from the base portion of the holder portion, and the holder portion can be fixed to the body surface using the wings. The holder portion can be attached to the body surface using adhesive, tape, or sutures. [Industrial applicability]

[0045] The catheter fixation device described herein can stably fix a catheter to the body surface without requiring a large force, and is useful in the medical field and other applications. [Explanation of Symbols]

[0046] 100 Catheter Fixation Devices 110 Holder part 111 Base section 121 Wing fixed part 123 Pin component 125 Cover section 127 Surrounding wall 131 Convex part 133 Lock section 134 Nail part 135 Step section 150 Catheter holding member 151 Catheter insertion site 152 Wings 154 Catheter insertion groove 155 Through hole 156 Communication groove 157 Through hole 180 Adhesive Pads 200 catheters

Claims

1. A catheter holding member formed from a flexible material, which holds the catheter, The catheter holding member is detachably attached to a holder portion, The catheter holding member has a plate-shaped portion including a catheter insertion portion which is provided with a catheter insertion groove through which the catheter is slidably inserted, The holder portion is a catheter fixing device in which the catheter holding member is attached in a state in which the groove width of the catheter insertion groove is reduced by deforming the plate-shaped portion so that the angle between the portions on both sides of the catheter insertion groove of the plate-shaped portion becomes smaller.

2. The holder portion has a base portion positioned on the patient's body surface side and a convex portion that protrudes from the base portion in a direction away from the body surface. The catheter fixing device according to claim 1, wherein the protrusion is located below the catheter insertion portion when the catheter holding member is attached to the holder portion.

3. The plate-like portion has a through hole, The catheter fixing device according to claim 2, wherein the holder portion has a pin member that protrudes from the base portion and is inserted into the through hole in a deformed state of the plate-shaped portion.

4. The plate-like portion has a pair of wing portions extending from the side of the catheter insertion portion. The pair of wing portions are positioned at a lower height than the catheter insertion portion when the catheter holding member is attached to the holder portion. The catheter fixing device according to claim 2 or 3, wherein the holder portion has a pair of cover portions that sandwich the pair of wing portions between themselves and the base portion.

5. The catheter fixing device according to claim 1, wherein the holder portion comprises a base portion positioned on the patient's body surface side and a cover portion that is sandwiched and fixed between the base portion and the plate-shaped portion in a state in which the groove width of the catheter insertion groove is reduced.

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