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JP-7857159-B2 - Medical devices

JP7857159B2JP 7857159 B2JP7857159 B2JP 7857159B2JP-7857159-B2

Inventors

  • 大橋 裕一郎

Assignees

  • 株式会社カネカ
  • 株式会社カネカメディックス

Dates

Publication Date
20260512
Application Date
20220523

Claims (15)

  1. Medical sheath and, The medical sheath comprises a sheet having a first notch for supporting the luminal side of the medical sheath, wherein at least a portion of the notch edge of the first notch is straight, A medical device in which the edge of the first notch extends along the longitudinal direction of the lumen of the medical sheath and is in contact with the inner surface of the medical sheath .
  2. The first cut has a portion A1 that extends in the first direction, The medical device according to claim 1, wherein the sheet has a second notch, and the second notch extends in a second direction and has a portion B1 that faces the portion A1 in the width direction.
  3. The medical device according to claim 2, wherein portion A1 and portion B1 are each linear.
  4. The medical device according to claim 2 or 3, wherein the first direction and the second direction are parallel.
  5. The first cut has a portion A2 adjacent to one end of the portion A1 in the first direction, The second cut has a portion B2 adjacent to one end of portion B1 in the second direction, and one end of portion B1 is closer to one end of portion A1 than the other end of portion A1 in the first direction. The medical device according to claim 2 or 3, wherein the portion A2 and the portion B2 extend in directions away from each other from one end of the portion A1 and one end of the portion B1.
  6. The first cut has a portion A3 adjacent to the other end of the portion A1 in the first direction, The second cut has a portion B3 adjacent to the other end of the portion B1 in the second direction. The medical device according to claim 5, wherein the portion A3 and the portion B3 extend in directions away from each other from the other end of the portion A1 and the other end of the portion B1.
  7. The portion A1 is longer than the portion A2 and longer than the portion A3. The medical device according to claim 6, wherein portion B1 is longer than portion B2 and longer than portion B3.
  8. The medical device according to claim 2 or 3, wherein, in the portion of the sheet positioned within the lumen of the medical sheath, the distance from portion A1 to portion B1 in a direction perpendicular to the axial direction of the medical sheath is shorter than the diameter of the lumen of the medical sheath.
  9. The medical device according to claim 1 or 2, wherein the medical sheath has an axially extending notch.
  10. The medical device according to claim 2 or 3, wherein the sheet has a third cut passing through one point in portion A1 excluding both ends of portion A1, and one point in portion B1 excluding both ends of portion B1.
  11. The medical device according to claim 10, wherein the third notch is located on the side closer to one end of the portion A1 in the first direction, and on the side closer to one end of the portion B1 in the second direction.
  12. The medical device according to claim 10, wherein the width of the third incision is greater than the width of the first incision.
  13. The portion A1 is shorter than the portion A2 and shorter than the portion A3. The medical device according to claim 6, wherein portion B1 is shorter than portion B2 and shorter than portion B3.
  14. In the portion of the sheet that is positioned inside the lumen of the medical sheath, The medical device according to claim 13, wherein the distance from portion A2 to portion A3 in a direction perpendicular to the axial direction of the medical sheath is shorter than the diameter of the lumen of the medical sheath, and the distance from portion B2 to portion B3 in a direction perpendicular to the axial direction of the medical sheath is shorter than the diameter of the lumen of the medical sheath.
  15. Furthermore, it comprises a medical tubular body and a protective tube in which at least a portion of the medical tubular body is disposed inside, The sheet has a pair of notches, and the edges of the pair of notches each hold the wound protective tube. The medical device according to claim 2 or 3, wherein the first and second notches are located outside the region from one of the pair of notches to the other.

Description

This invention relates to a medical device that reduces deformation of medical sheaths during sterilization. Conventionally, flexible, elongated medical devices such as catheters were often fixed to a cardboard backing and packaged in a bag when not in use. For example, Patent Document 1 discloses a medical device holding cardboard made of a long sheet material that is stored in a bag-shaped package while holding a medical device having a flexible linear portion, and the holding portion is formed by folding the sheet material in a V-shape along the longitudinal direction of the sheet material, and has a V-shaped groove for storing the linear portion of the medical device, and a W-shaped groove formed at the base end of the V-shaped groove by folding the valley in the opposite direction in a mountain shape. Furthermore, Patent Document 2 discloses a medical device packaging member characterized by cutting a thin, flat sheet or dish-shaped body made of paper or a soft synthetic resin to form one or more restraining pieces, providing a notch with an arched end approximately in the center of each restraining piece, cutting from the arched end of the notch to the end of the restraining piece to form a pressure-relieving portion, and folding the restraining piece at the base end along the folding portion. Japanese Patent Publication No. 2009-201826Japanese Patent Publication No. 2002-193322 Figure 1 is a plan view of a medical device according to the first embodiment.Figure 2 is a cross-sectional view showing the section A-A in Figure 1.Figure 3 is a plan view of an example of a medical sheath.Figure 4 is a plan view of a medical device according to the second embodiment.Figure 5 is a cross-sectional view showing the section B-B in Figure 4.Figure 6 is a plan view of the sheet before the medical sheath shown in Figure 4 is placed on it.Figure 7 is a plan view of a medical device according to the third embodiment.Figure 8 is a cross-sectional view showing the C-C section of Figure 7.Figure 9 is a plan view of the sheet before the medical sheath shown in Figure 7 is placed on it.Figure 10 is a plan view of a modified version of the sheet shown in Figure 9.Figure 11 is a plan view of a medical device according to the fourth embodiment.Figure 12 is a plan view of a medical device according to the fifth embodiment. The present invention will be described more specifically below based on the embodiments described below. However, the present invention is not limited by these embodiments, and it is certainly possible to implement it with appropriate modifications within the scope that is consistent with the spirit of the preceding and following descriptions. All such modifications are included within the technical scope of the present invention. Note that, for convenience, some component reference numerals, etc., may be omitted in the drawings; in such cases, please refer to the specification or other drawings. Furthermore, the dimensions of various components in the drawings may differ from the actual dimensions, as priority is given to facilitating an understanding of the features of the present invention. The medical device according to an embodiment of the present invention comprises a sheet having a first notch and a medical sheath, wherein at least a portion of the notch edge of the first notch is positioned within the lumen of the medical sheath. As described above, conventionally, when a medical sheath was pressed down by the holding portion of the backing sheet and sterilized using high-pressure steam or heat sterilization gas, the medical sheath sometimes deformed. In contrast, with the medical device according to this embodiment, the inner lumen of the medical sheath can be supported by the cut edge of the first notch in the sheet, thus reducing deformation of the medical sheath. The following describes a medical device according to the first embodiment, with reference to Figures 1, 2, and 3. Figure 1 is a plan view of the medical device according to the first embodiment, and Figure 2 is a cross-sectional view showing the section A-A in Figure 1. Figure 3 is a plan view of an example of a medical sheath. As shown in Figures 1 and 2, the medical device 101 according to the first embodiment comprises a sheet 10 having a first notch 1S and a medical sheath 20. At least a portion of the notch edge 1Ea of the first notch 1S is positioned within the lumen 20L of the medical sheath 20. The notch edge 1Ea of the first notch 1S of the sheet 10 and the surrounding area can support the lumen 20L side of the medical sheath 20. As a result, deformation of the medical sheath 20 due to heat sterilization can be reduced. As shown in Figure 1, the first notch 1S preferably has a portion A1 (SA1) extending in the first direction 1X. The portion A1 (SA1) is preferably linear. This makes it easier for the notch edge 1Ea of the first notch 1S of the sheet 10 and its vicinity to support the inner lumen 20L side of the linearly exte