JP2014057805A - Tube fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tube fixture capable of surely fixing a soft tube partially inserted in a patient's body to a patient.SOLUTION: A tube fixture 1 includes: a seat part 2 fixed to a patient's skin; a swollen part 3 formed so as to be raised from the seat part 2; and a tube holding passage 4 penetrating the seat part 2 and the swollen part 3, respectively, to hold a tube. The tube holding passage 4 has a first opening 4a opened at the seat part 2 in the oblique direction to a contact surface 2a of the seat part that comes into contact with the patient's skin and a second opening 4b opened at the swollen part 3 in the expanding direction of the seat part 2, and the first opening 4a and the second opening 4b are connected to each other while being smoothly curved.

Description

  The present invention relates to a tube fixing tool for fixing a flexible tube partially inserted into a patient's body to the patient.

  In various medical practices, a part of a tube such as a catheter or cannula may be placed in a state of being inserted into a patient. As a method of fixing such a tube, a method of tying the tube to the patient's skin while tying the tube with a suture thread, or covering the tube placed on the patient's skin with an adhesive member such as surgical tape or various dressing materials There are methods such as sticking to the skin. When a suture is used, there is a problem that the tube is narrowed or the tied suture is kinked if the binding is too strong. On the other hand, if the suture is tied too loosely, the tube becomes less restrained, and there is a problem that the tube is easily pulled out and easily enters the body. On the other hand, when the adhesive member is used, particularly when the tube is made of silicone, the surface of the tube is inactive and the adhesive member and the tube are not bonded. Then, although it devised for every medical institution, such as cutting an adhesive member into various shapes and winding it around a tube, there existed a problem in the effort and certainty required for fixation of a tube.

  Therefore, as a device for assisting in fixing the tube, a catheter holding tool is known in which a straight insertion hole for holding the tube is inclined and can be attached to the skin of a patient (Patent Document 1). Further, a fixing device is known in which a tube is passed through a path bent in an L shape and a flat base portion is fixed to a patient's skin (Patent Document 2). In addition, there is Patent Document 3 as a related prior art document.

JP-A-11-76418 Japanese Patent Laid-Open No. 60-100833 JP-A-7-506994

  Since the holder of Patent Document 1 has a straight insertion hole for holding the tube, there is a problem that when the tube is pulled, the frictional resistance generated between the tube and the holder is not sufficient and the tube is easily pulled out. There is. Further, in the fixing device of Patent Document 2, since the passage holding the tube is bent in an L shape, the frictional resistance generated when the tube is pulled is sufficient, but the force is concentrated on the corner of the passage. As a result, the tube may be narrowed.

  Then, an object of this invention is to provide the tube fixing tool which can fix to a patient the flexible tube partially inserted in the patient's body.

  The tube fixing tool of the present invention is a tube fixing tool (1) for fixing a flexible tube (T) partially inserted into the body of a patient (K) to the patient, wherein the tube is inserted. A sheet portion (2) fixed to the patient's skin so as to cover the tube insertion portion (a) formed on the patient's skin (s), and a raised portion formed so as to rise from the sheet portion ( 3) and a tube holding passage (4) for holding the tube through each of the sheet portion and the raised portion, and the tube holding passage is in contact with the skin of the patient. A first opening (4a) that opens at the sheet portion obliquely with respect to the surface (2a); and a second opening (4b) that opens at the raised portion in a direction in which the sheet portion expands. And the first opening and the first It is intended to connect with smoothly curved and an opening.

  According to this tube fixture, since the tube is held by the smoothly curved tube holding passage, the frictional resistance generated when the tube is pulled becomes larger than when the passage is formed straight. Thereby, even if the tube is pulled, the tube is difficult to come off. In addition, since the tube holding passage is smoothly curved, there are no sharp corners in the passage. Therefore, even when the tube is pulled, the force is not concentrated on a part of the tube, and the constriction of the tube can be suppressed.

  In one aspect of the tube fixing device of the present invention, the bulging portion has a lateral width (W) in a direction transverse to the tube holding passage and parallel to the seat portion from the position where the second opening is formed. You may have a constriction part (10) which changes so that it may reduce in the process which reaches the boundary (3a) with the said sheet | seat part. According to this aspect, the rigidity of the raised portion is weakened around the constricted portion. Therefore, even if a force is applied in the vicinity of the second opening of the raised portion by pulling the tube in a direction intersecting the opening direction of the second opening, the second opening is allowed to be deformed by the constricted portion. Stress is not concentrated near the area. Accordingly, when the tube is pulled, stress can be prevented from being concentrated in the vicinity of the second opening and the fixture can be prevented from being detached from the patient, and displacement of the tube with respect to the tube holding passage in the longitudinal direction can also be prevented.

  In this aspect, the constricted portion may change such that the width changes from decreasing to increasing in the process from the formation position of the second opening to the boundary with the sheet portion, and is connected to the sheet portion. In this case, since the lateral width of the raised portion that has decreased once increases at the boundary with the seat portion, it is possible to suppress a decrease in strength at the boundary portion between the raised portion and the seat portion. This improves the durability of the tube fixture.

  In one aspect of the tube fixture of the present invention, the tube holding passage is torn from the first opening to the second opening, and is opened toward the contact surface side of the sheet portion (6, 6 ') may be formed. According to this aspect, the tube can be attached to the tube holding passage by opening the slit that cuts through the tube holding passage. Moreover, since this slit is opened toward the contact surface side of the sheet portion, most of the end surface of the slit is hidden between the patient's skin and the sheet portion with the tube fixed to the patient. Therefore, even when the tube is pulled with the tube fixed to the patient, the slit can be forcibly opened by the tube and the tube can be prevented from dropping from the holder.

  In this aspect, the slit is provided with an opening suppression portion (11) that suppresses the opening of the slit, and the opening suppression portion is a pair of members (A, B) that face each other and are cut by the slit. ), A protrusion (12) that protrudes toward the other (B) of the member and extends along the longitudinal direction of the slit, and the other of the members. And a recess (13) that is retracted with respect to any one of the members and can fit into the protrusion. In this case, since the protrusion of the opening suppression portion fits into the recess, the slit is less likely to open than when the opening suppression portion is not provided, so that the adhesion between the tube holding passage and the tube can be improved. And the tube can be fixed more firmly.

  1 aspect of the tube fixing tool of this invention WHEREIN: Each of the said sheet | seat part and the said protruding part is comprised with a transparent or semi-transparent material so that it can visually recognize in the state where the said tube insertion part was covered with the said sheet | seat part. May be. In this case, the tube insertion portion can be observed without removing the tube fixing portion from the patient.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, according to the tube fixture of the present invention, since the tube is held by the smoothly curved tube holding passage, the tube is not easily pulled out even if the tube is pulled, and the force is concentrated on a part. Without restricting the stenosis of the tube.

The perspective view which showed the external appearance of the tube fixing tool which concerns on one form of this invention. The figure which showed the state which looked at the tube fixing tool of FIG. 1 from the arrow II direction of FIG. Sectional drawing along the III-III line of FIG. Sectional drawing which showed the state which fixed the tube to the patient using the tube fixing tool. Explanatory drawing which showed the modification of a slit.

  The tube fixing tool 1 shown in FIGS. 1 to 3 is used to fix a flexible tube T partially inserted into the body of the patient K as shown in FIG. The tube fixture 1 is made of a flexible and translucent material such as silicone, and a sheet portion 2 and a raised portion 3 formed so as to rise from the sheet portion 2 are integrally formed. The sheet | seat part 2 has spread in the shape of a thin plate, and can cover the tube insertion part a (FIG. 4). The tube insertion part a is formed in the skin s of the patient K when the tube T is inserted.

  The light transmittance of the material of the tube fixture 1 is adjusted to such an extent that the tube insertion portion a covered with the sheet portion 2 can be visually recognized. For this reason, as shown in FIG. 4, the tube insertion portion a can be observed in a state where the tube T is fixed to the patient K using the tube fixture 1. In addition, the tube fixture 1 is provided with an adhesive on the contact surface 2a of the sheet part 2 that contacts the skin s of the patient K so that the sheet part 2 can be fixed to the patient s skin s. . As this pressure-sensitive adhesive, a silicone pressure-sensitive adhesive having good gas permeability can be adopted. In addition, by adding or blending an antibacterial substance to the material of the tube fixture 1, the effect of preventing external contamination and infection in a state where the tube T is fixed to the patient K can be enhanced.

  A tube holding passage 4 that penetrates the seat portion 2 and the raised portion 3 is formed in the tube fixture 1. As shown in FIG. 4, the tube T inserted into the patient K is held by the tube holding passage 4. The tube holding passage 4 has a first opening 4 a that opens at the seat portion 2 and a second opening 4 b that opens at the raised portion 3. The shape and size of the tube holding passage 4 are set so as to fit with the tube T to be fixed, including the openings 4a and 4b, without gaps. The first opening 4 a opens in an oblique direction with respect to the contact surface 2 a of the sheet portion 2. In this embodiment, as shown in FIG. 3, the angle θ between the opening direction of the first opening 4a and the contact surface 2a is set to 45 degrees. This angle θ can be adjusted within a range of 20 to 60 degrees so as to substantially match the insertion angle when the tube T is inserted into the patient K. The 2nd opening part 4b is opened in the direction (right direction of FIG. 3) where the sheet | seat part 2 spreads. More specifically, in this embodiment, the opening direction of the second opening 4b is designed to be parallel to the sheet portion 2. As shown in FIG. 3, the tube holding passage 4 connects the first opening 4a and the second opening 4b while smoothly bending. In other words, the tube holding passage 4 connects the first opening 4a and the second opening 4b while curving so that there are no sharp corners.

  The tube fixture 1 is formed with a slit 6 that cuts the tube holding passage 4 so that the tube T can be easily attached to the tube holding passage 4. As shown in FIG. 2, the slit 6 cuts the tube holding passage 4 from the first opening 4a to the second opening 4b. The end surface 6 a of the slit 6 is located on the contact surface 2 a side of the sheet portion 2. In other words, the slit 6 opens on the contact surface 2 a side of the sheet portion 2. Therefore, as shown in FIG. 4, most of the end surface 6 a of the slit 6 is hidden between the skin s of the patient K and the sheet portion 2 in a state where the tube T is fixed to the patient K. Therefore, even when the tube T is pulled while the tube T is fixed to the patient K, the slit T can be forcibly opened by the tube T and the tube T can be prevented from falling off the tube holder 1. .

  As shown in FIG. 1, the raised portion 3 has a constricted portion 10 located around the second opening 4b. The constricted portion 10 is formed by changing so that the lateral width W of the raised portion 3 decreases in the process from the formation position of the second opening 4 b to the boundary 3 a with the sheet portion 2. As is apparent from FIG. 1, the lateral width W of the raised portion 3 is the dimension of the raised portion 3 in the direction transverse to the tube holding passage 4 and parallel to the seat portion 2. By providing the constricted portion 10 on the raised portion 3, the rigidity of the raised portion 3 is weakened around the constricted portion 10. Therefore, even if a force is applied in the vicinity of the second opening 4b of the raised portion 3 by pulling the tube T in the direction intersecting the opening direction of the second opening 4b, for example, the direction intersecting the paper surface of FIG. Since the deformation of the raised portion 3 is allowed by the portion 10, no stress is concentrated in the vicinity of the second opening 4b. Thereby, when the tube T is pulled, stress can be prevented from being concentrated near the second opening 4b and the tube fixture 1 can be prevented from being removed from the patient K, and the tube T can be displaced with respect to the longitudinal direction of the tube T relative to the tube holding passage 4. Can also be prevented.

  Further, as shown in FIG. 1, the constricted portion 10 according to the present embodiment is changed from decreasing to increasing in the process in which the lateral width W reaches the boundary 3a with the sheet portion 2 from the formation position of the second opening 4b. It changes so that it may be connected to part 2. For this reason, since the width W of the raised portion 3 once reduced increases at the boundary 3 a with the sheet portion 2, it is possible to suppress a decrease in strength at the boundary portion between the raised portion 3 and the sheet portion 2. This improves the durability of the tube fixture 1 while enjoying the benefits of the constricted portion 10 described above.

  According to the tube fixture 1, since the tube T is held by the smoothly curved tube holding passage 4, the frictional resistance generated when the tube T is pulled compared to the case where the passage 4 is formed straight is reduced. growing. Thereby, even if the tube T is pulled, the tube T is difficult to come off. In addition, since the tube holding passage 4 is smoothly curved, there is no sharp corner in the passage 4, so that even if the tube T is pulled, the force is not concentrated on a part of the tube T and the constriction of the tube T can be suppressed. . Moreover, the tube fixing tool 1 fits the tube T to the tube holding passage 4 while sticking and fixing the sheet portion 2 to the patient's skin using an adhesive. For this reason, the adhesion between the skin s of the patient K and the tube fixture 1 and the adhesion between the tube T and the tube holding passage 4 are good. Therefore, it is possible to prevent external contamination or infection, or leakage of liquid such as blood and body fluid from the body of the patient K along the outer peripheral surface of the tube T to the outside.

  However, this invention is not limited to the said form, It can implement with a various form within the range of the summary of this invention. Adopting an adhesive as a means for fixing the sheet portion to the patient's skin is merely an example. Therefore, instead of using the adhesive, stitching the sheet portion to the patient's skin can be employed as one of the fixing means.

  It is an example to make the tube insertion portion a (FIG. 4) covered with the sheet portion 2 visible by using a light-transmitting material as a raw material, like the tube fixture 1 of the above form. Only. Therefore, it is also possible to employ a material that does not transmit light as the material for the tube fixture of the present invention. Like the tube fixture 1 of the said form, it is not essential that the sheet | seat part 2 and the protruding part 3 are integrally formed. Therefore, the present invention can be carried out in a form in which the sheet part and the raised part are formed as separate parts, or the present invention can be carried out in a form in which they are made of different materials.

  Although the slit 6 is provided in the tube fixture 1 of the said form, this invention can also be implemented with the form which does not exist a slit. Further, the shape of the slit is not limited to the linearly extending shape shown in each figure of the above embodiment. For example, the present invention can be implemented in a form having slits extending in a non-linear manner such as wavy lines and zigzag lines. By adopting such a non-linear slit, the shear resistance with the slit as the boundary increases, so that it is possible to suppress the tube fixture from being deformed while staggering with the slit as the boundary surface.

  Moreover, the slit 6 of the tube fixture 1 can also be changed to the form shown in FIG. The slit 6 'in FIG. 5 is provided with an opening suppression portion 11 that suppresses the opening of the slit 6'. The opening restraining portion 11 is provided between a pair of members A and B that face each other and are cut by the slit 6 '. One member A is provided with a protrusion 12 that protrudes toward the member B and extends along the longitudinal direction F of the slit 6 ′. The other member B is provided with a recess 13 which is retracted with respect to the member A and can be fitted to the protrusion 12. According to the form of FIG. 5, the slit 6 ′ is less likely to open than the form of FIGS. 1 to 3 that does not have the opening suppression part 11 by fitting the protrusion 12 of the opening suppression part 11 into the recess 13. The adhesion between the tube holding passage 4 and the tube T can be improved, and the tube T can be more firmly fixed.

DESCRIPTION OF SYMBOLS 1 Tube fixing tool 2 Sheet | seat part 3 Raised part 4 Tube holding channel | path 4a 1st opening part 4b 2nd opening part 6 and 6 'Slit 10 Constriction part 11 Opening suppression part 12 Protrusion part 13 Recess part a Tube insertion part s Patient's skin K Patient T Tube W Protrusion width

Claims (6)

A tube fixing tool for fixing a flexible tube partially inserted into a patient's body to the patient,
A sheet portion fixed to the patient's skin so as to cover the tube insertion portion formed in the patient's skin by the tube being inserted;
A raised portion formed so as to rise from the sheet portion;
A tube holding passage for holding the tube through each of the seat portion and the raised portion, and
The tube holding passage is opened at the raised portion in a direction in which the sheet portion spreads, and a first opening portion opened at the seat portion in an oblique direction with respect to a contact surface of the sheet portion that contacts the patient's skin. And a second opening that connects the first opening and the second opening while smoothly bending.   The protruding portion is configured such that a lateral width in a direction crossing the tube holding passage and in a direction parallel to the sheet portion decreases in a process from the formation position of the second opening portion to the boundary with the sheet portion. The tube fixture according to claim 1, which has a constricted portion that changes.   3. The tube fixing according to claim 2, wherein the constricted portion changes so that the width changes from decreasing to increasing in the process from the formation position of the second opening to the boundary with the sheet portion, and is connected to the sheet portion. Ingredients.   The slit which opens the said tube holding channel | path from the said 1st opening part to the said 2nd opening part, and opens toward the said contact surface side of the said sheet | seat part is formed. The tube fixture according to item. The slit is provided with an opening suppression portion that suppresses the opening of the slit,
The opening suppression portion is provided on one of a pair of members facing each other, which is cut by the slit, and protrudes toward the other of the members and extends along the longitudinal direction of the slit. The tube fixture according to claim 4, further comprising a recess and a recess that is provided on either one of the members, retracts with respect to any one of the members, and fits with the protrusion.   Each of the said sheet | seat part and the said protruding part is comprised with the transparent or semi-transparent material so that it can visually recognize in the state where the said tube insertion part was covered with the said sheet | seat part. The tube fixture according to one item.

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