Holding mount for medical instrument

Abstract

To provide a holding mount for a medical instrument of a novel structure capable of stably holding the medical instrument and easily detaching the medical instrument by pulling a grip part of the medical instrument to a base end side.SOLUTION: There is provided a holding mount 10 for a medical instrument which holds a medical instrument 12 provided with a connector 24 at an end part of a long-sized part 22 extending from a grip part 18 on a base end side of a shaft 16, and releases the holding by pulling the grip part 18 to the base end side. A positioning window 44 into which the connector 24 is inserted is formed, and a pair of side cut-and-raised wall portions 48,48 that rise from edge portions on both sides of the positioning window 44 and restrict displacement of the connector 24 to the side and a base end-side cut-and-raised wall portion 46 that rises from an edge portion on the base end side of the positioning window 44 and restricts displacement of the connector 24 to the base end side are formed. The base end-side cut-and-raised wall portion 46 serves as a guide part for assisting the withdrawal of the connector 24 from the positioning window 44 by the movement to the base end side with the tilting to the base end side.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a medical instrument holder that holds a medical instrument having a long portion, such as a catheter, in a predetermined shape. [Background technology]

[0002] Conventionally, medical instrument holders have been used to protect medical instruments such as catheters from external forces during transportation and storage and to hold them in a predetermined shape. As disclosed in, for example, Japanese Patent Laid-Open Publication No. 2023-176472 (Patent Document 1), medical instrument holders are sheet-shaped and have a structure that positions and holds the long portion and connector of the medical instrument by means of positioning windows, cutouts, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-176472 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, medical instruments held by a medical instrument holder are housed together with the holder in, for example, a packaging bag, and are removed from the opened bag when in use. In this case, in medical settings, an end of the bag is opened and the medical instrument is pulled from the opening toward the long portion, removing only the medical instrument from the bag without removing the holder. In particular, with a medical instrument having a structure in which the electric wire as the long portion extends from a handle portion as a gripping portion, as shown in FIG. 8 of Patent Document 1, medical personnel often pull the medical instrument out of the bag while grasping the handle portion. This pulls the electric wire toward the handle portion, and the tensile force causes the connector to come off the holder.

[0005] However, depending on the structure of the medical instrument holder, for example, the connector may get caught on the holder, making it difficult to remove the medical instrument. Furthermore, if the long portion is pulled strongly while the connector is caught on the holder, damage or deformation of the long portion may occur. In particular, when the connector is fitted into a positioning window formed in the holder, the connector is likely to get caught on the periphery of the positioning window, making it difficult to smoothly remove the medical instrument from the holder.

[0006] On the other hand, if the holding force of the medical instrument holder is too weak, the medical instrument may unintentionally come off the holder due to vibrations during transportation, for example, which may cause medical personnel to worry about damage to the medical instrument or may actually damage the medical instrument.

[0007] The problem to be solved by the present invention is to provide a medical instrument holding board with a novel structure that can stably hold medical instruments and allows the medical instruments to be easily removed by pulling the long portion. [Means for solving the problem]

[0008] The following describes preferred embodiments for understanding the present invention, but the embodiments described below are merely examples and may be appropriately combined with one another. Multiple components described in each embodiment may be recognized and employed independently to the greatest extent possible, and may also be appropriately combined with any of the components described in other embodiments. Accordingly, the present invention is not limited to the embodiments described below, and various other embodiments may be realized.

[0009] The first aspect is a medical instrument holding base that holds a medical instrument having a connector at the end of a long section extending from a gripping section provided at the base end of a shaft, and the medical instrument is removed by pulling the gripping section towards the base end of the shaft, and is provided with a positioning window in which the connector is positioned, and a pair of side cut-and-raised wall sections that rise from the edges on both sides of the positioning window to limit lateral displacement of the connector, and a base end cut-and-raised wall section that rises from the edge on the base end side of the positioning window to limit displacement of the connector towards the base end, and the base end cut-and-raised wall section serves as a guide section that assists the connector in moving towards the base end to be removed from the positioning window by tilting it towards the base end.

[0010] In the medical instrument holder constructed according to this aspect, the connector is inserted into a positioning window provided in the medical instrument holder, and the pair of side cut-and-raised walls located on both sides of the connector and the base-end cut-and-raised wall located on the base end of the connector ensure that the connector is stably positioned relative to the medical instrument holder. This prevents the connector from unintentionally coming off the medical instrument holder due to shock during transportation, for example, and ensures that the medical instrument is stably held by the medical instrument holder.

[0011] Furthermore, when the gripping portion of the medical instrument is pulled toward the base end, the connector is pulled toward the base end via the elongated portion, causing the connector to press against the base end cut-and-raised wall portion of the holder mount. The pressing of the connector causes the base end cut-and-raised wall portion to tilt, and the tilted base end cut-and-raised wall portion guides the connector in a direction away from the positioning window, allowing the connector to slip out of the positioning window without getting caught. Therefore, by holding the gripping portion and pulling the medical instrument toward the base end, the medical instrument can be easily removed from the holder mount.

[0012] In a second aspect, in the holding base for medical instruments described in the first aspect, the raised tip of the base end cut-and-raised wall portion has a concave shape that positions the long portion.

[0013] With the medical device holder constructed according to this aspect, the direction of extension of the elongated portion from the connector is stable, so that when a force pulling the gripping portion toward the base end is transmitted to the connector via the elongated portion, the direction of action of the force on the connector can be stabilized. Moreover, since the elongated portion is positioned by the shape of the tip of the proximal cut-and-raised wall portion, there is no need to provide a special positioning structure for the elongated portion.

[0014] A third aspect is a medical instrument holding base that holds a medical instrument having a connector at the end of a long portion extending from a gripping portion provided at the base end of a shaft, and that allows the medical instrument to be removed by pulling the gripping portion toward the base end of the shaft, and that has a positioning window formed therein for positioning the connector, and a pair of lateral cut-and-raised wall portions formed on the periphery of the positioning window that rise on both sides of the positioning window and limit the lateral displacement of the connector, and the base end side edge of the positioning window is an inclined edge portion that extends at an angle with respect to the pulling direction of the long portion, and the inclined edge portion serves as a removal assistance portion that applies an abutment reaction force to the connector in the direction of removal from the positioning window.

[0015] In the medical instrument holder constructed according to this aspect, the connector is inserted into a positioning window provided in the medical instrument holder, and the pair of side cut-out walls located on both sides of the connector ensures that the connector is stably positioned relative to the medical instrument holder. This prevents the connector from unintentionally coming off the medical instrument holder due to shock during transportation, for example, and ensures that the medical instrument is stably held by the medical instrument holder.

[0016] The edge of the positioning window on the proximal side is beveled, so that when the grip of the medical device is pulled toward the proximal side and the edge of the cylindrical outer surface of the connector abuts the beveled edge of the insertion hole, the beveled edge guides the connector in a direction that disengages it from the positioning window, and the connector slips out of the positioning window. Therefore, by holding the grip and pulling the medical device toward the proximal side, the medical device can be easily removed from the holder.

[0017] In a fourth aspect, in the medical instrument holder board according to the third aspect, the inclined edge portion is inclined toward the base end side as it goes laterally inward.

[0018] With a medical instrument holding base constructed in accordance with this embodiment, when the gripping portion of the medical instrument is pulled toward the base end, the inclined edges abut on both sides against the base end portion of the connector, thereby preventing unintended changes in the connector's posture, such as the connector tilting to the side due to the reaction force from abutting against the inclined edges, and stabilizing the connector's removal from the positioning window.

[0019] In a fifth aspect, in a medical instrument holding base described in any one of the first to fourth aspects, the medical instrument is contained in a longitudinal bag body while being held therein, and the opening portion of the bag body for removing the medical instrument is located at one end side in the longitudinal direction, which is the base end side of the shaft.

[0020] According to the medical instrument holding mount constructed in accordance with this embodiment, the connector can be detached from the holding mount by pulling the gripping portion of the medical instrument toward the opening portion of the bag body, and therefore the medical instrument can be removed from the holding mount by the same operation as removing the medical instrument from the bag body.

[0021] Furthermore, the connector can be removed from the positioning window portion by the guiding action of the base end cut-and-raised wall portion and the inclined edge portion without having to move the connector significantly in the opening direction of the positioning window, so the connector can be removed stably from the positioning window even when both sides of the opening direction of the positioning window are covered with a bag body.

[0022] The sixth aspect is a holding board for medical instruments described in any one of the first to fifth aspects, which is provided with a holding portion that holds the long portion at the end on the connector side while allowing the long portion to be displaced in the longitudinal direction.

[0023] With a holding board for medical devices constructed in accordance with this embodiment, the connector-side end of the long portion is positioned relative to the holding board, stabilizing the direction of the tensile force exerted from the gripping portion through the long portion toward the base end on the connector, thereby enabling the connector to be more stably removed from the positioning window.

[0024] A seventh aspect is a holding board for medical instruments described in any one of the first to sixth aspects, wherein the force required to remove the connector from the positioning window is 2 to 10 N.

[0025] With a medical device retaining board constructed in accordance with this embodiment, a tensile force of 2N or more is required for the connector to slip out of the positioning window, thereby preventing the connector from unintentionally coming off the retaining board.

[0026] The connector can be removed from the positioning window with a relatively small pulling force of 10 N or less. This makes it easy to remove the medical device from the holder mount, and also prevents a strong pulling force from acting on the long portion between the gripping portion and the connector when the gripping portion is pulled toward the base end, preventing breakage or deformation of the long portion. [Effects of the Invention]

[0027] According to the present invention, the medical instrument can be stably held by the medical instrument holder, and the medical instrument can be easily removed from the holder by pulling the grip portion toward the base end. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a plan view showing a holder board for a medical instrument according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a plan view showing a state in which a high-frequency needle is held on the holding board of FIG. [Figure 3] FIG. 2 is an enlarged perspective view of a portion III in FIG. 1; [Figure 4] FIG. 3 is an enlarged perspective view of a portion IV in FIG. 2 . [Figure 5] An enlarged front view of the V portion of Figure 2. [Figure 6] Figure 2 shows the high-frequency needle held on the holder. [Figure 7] Figure 2 shows the high-frequency needle held on the holder. [Figure 8] 5 is a perspective view showing a process in which the connector set on the holder shown in FIG. 4 is removed from the holder. [Figure 9] 6 is a front view showing the process in which the connector set on the holder shown in FIG. 5 is removed from the holder. [Figure 10] 6 is a front view showing the process in which the connector set on the holder shown in FIG. 5 is removed from the holder. [Figure 11] FIG. 10 is a plan view showing a holder board for a medical instrument according to a second embodiment of the present invention; [Figure 12] 12 is a partial perspective view showing a state in which the side cut-and-raised pieces are cut and raised in the holding base of FIG. 11, and corresponds to the XII portion of FIG. [Figure 13] FIG. 13 is a partial plan view of the holding board shown in FIG. 12 with the side cut-and-raised pieces cut and raised. [Figure 14] 12 is a perspective view of a state in which a connector is inserted into a positioning window portion of the holding board shown in FIG. 11; [Figure 15] 12 is a perspective view showing a process in which the connector is removed from the positioning window portion of the holding board of FIG. 11; DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0030] Fig. 1 shows a medical instrument holder 10 according to a first embodiment of the present invention. As shown in Fig. 2, the holder 10 is used to protect a high-frequency needle 12, which serves as a medical instrument, and is provided with a holding structure for stably protecting the high-frequency needle 12 by preventing unintentional removal of the high-frequency needle 12. In the following description, the "front-rear direction" generally refers to the up-down direction in Fig. 1, the "left-right direction" generally refers to the left-right direction in Fig. 1, and the "up-down direction" generally refers to the direction perpendicular to the plane of the paper in Fig. 1. Furthermore, the "base end side" generally refers to the left side in Figs. 1 and 2, which corresponds to the proximal end side of the high-frequency needle 12 held by the holder 10, and the "tip side" generally refers to the right side in Figs. 1 and 2, which corresponds to the distal end side of the high-frequency needle 12.

[0031] As shown in Fig. 1, the holding mount 10 has an elongated, generally rectangular plate shape with its length in the left-right direction as a whole. The holding mount 10 is made of, for example, paper or resin, and is preferably made of foamed resin, which can achieve a good balance between the deformation rigidity required to protect the high-frequency needle 12 and the elasticity required to hold the high-frequency needle 12. The holding mount 10 is made of, for example, a rigid or semi-rigid polyurethane foam (urethane foam). However, the material of the holding mount 10 is not particularly limited, and the holding mount 10 can also be made of, for example, cardboard whose surface has been laminated or waterproofed.

[0032] The holding board 10 has a flat substrate 14 on the upper surface of which the high-frequency needle 12 is placed. The holding board 10 also has a plurality of notches formed therein, which form a holding structure (described later) for the high-frequency needle 12.

[0033] 2, the high-frequency needle 12 includes a small-diameter shaft 16 and a grip portion 18 provided on the base end side of the shaft 16. A connection portion 20 protrudes from the base end side of the grip portion 18 and is connected to a transducer (not shown) or the like that measures the internal pressure of the heart into which the tip of the high-frequency needle 12 is inserted. Note that the tip portion of the shaft 16 of the high-frequency needle 12 in this embodiment is curved and extends laterally.

[0034] An electric wire 22 serving as a long portion is connected to the grip portion 18. The electric wire 22 extends from the grip portion 18 toward the base end while inclining forward. A connector 24 is connected to the end of the electric wire 22 opposite the grip portion 18. The connector 24 has an outer circumferential surface that is generally cylindrical overall, and the central portion in the left-right direction is a large-diameter portion 26 having a large outer diameter. The electric wire 22 extends from the connector 24 toward the base end, and the angle of inclination of the electric wire 22 relative to the base end of the connector 24 is allowed to change.

[0035] The connector 24 can be connected to an external power supply (not shown), and high-frequency power supplied from the power supply is sent to the tip of the shaft 16, thereby heating the tip of the shaft 16. The high-frequency needle 12 can then cauterize body tissue, such as the fossa ovalis of the heart, with the heated tip of the shaft 16.

[0036] The high-frequency needle 12 is placed on the upper surface of the substrate portion 14 of the holding board 10, and is positioned and held at multiple points by multiple types of holding structures formed by cuts in the holding board 10.

[0037] That is, the shaft 16 of the high-frequency needle 12 is positioned on the holding board 10 by pairs of shaft presser pieces 28, 28 at two locations along its length. The shaft presser pieces 28 are formed by making a substantially V-shaped or U-shaped cut in the holding board 10, and are elastically tiltable around the uncut side. When the shaft 16 is inserted below the shaft presser pieces 28, upward displacement of the shaft 16 relative to the top surface of the substrate 14 (in the forward direction perpendicular to the plane of the paper in FIG. 1 ) is restricted. In other words, the shaft 16 inserted below the shaft presser pieces 28 is pressed against the top surface of the substrate 14 by the elasticity of the shaft presser pieces 28, and is positioned and held in the vertical direction relative to the holding board 10.

[0038] The pair of shaft pressing pieces 28, 28 are provided such that the uncut portions, which are the tilting centers, are located on one side of the shaft 16 in the front-to-rear direction, and the protruding directions from the uncut portions are opposite to each other in the front-to-rear direction. The pair of shaft pressing pieces 28, 28 are also arranged in close proximity to each other but spaced apart in the left-to-right direction. As a result, the pair of shaft pressing pieces 28, 28 limit not only the relative displacement of the shaft 16 with respect to the holding base 10 in the up-and-down direction, but also the relative displacement in the front-to-rear direction.

[0039] The amount of upward displacement of the tip portion of the shaft 16 is limited by a tip presser piece 30 of the holding board 10. As shown in FIG. 1, the tip presser piece 30 is formed by a cutout into a generally E-shape, and has three uncut portions on the front right side that serve as tilting centers. The tip portion of the shaft 16 placed on the base portion 14 of the holding board 10 is inserted under the tip presser piece 30, thereby limiting upward displacement (the forward direction perpendicular to the plane of the paper in FIG. 1) relative to the top surface of the base portion 14. The uncut portions of the tip presser piece 30 also limit the forward and backward and left and right displacement of the tip portion of the shaft 16 relative to the base portion 14.

[0040] The holding base 10 of this embodiment is also provided with other shaft holding pieces 28 and tip holding pieces 30 that are not used to hold the high-frequency needle 12 of this embodiment, so that it can hold multiple types of high-frequency needles, such as high-frequency needles with longer shafts or high-frequency needles with different shaft shapes and arrangements (see Figures 1 and 2).

[0041] A first wall portion 34 on the tip side and a second wall portion 36 on the base side are provided in a portion of the holding base 10 where the grip portion 18 of the high-frequency needle 12 is located. The first wall portion 34 is generally rectangular plate-shaped overall, with one side on the tip side (right side) continuing with the substrate portion 14 and the other three sides being cut and raised so as to stand approximately upright relative to the substrate portion 14. The second wall portion 36 is generally concave plate-shaped, with one side on the base side (left side) continuing with the substrate portion 14 and the other parts being cut and raised so as to stand approximately upright relative to the substrate portion 14. The first wall portion 34 is superimposed on the tip surface of the gripping portion 18 of the high-frequency needle 12, so that the first wall portion 34 limits the amount of relative displacement of the gripping portion 18 toward the tip side relative to the holding base 10, and the second wall portion 36 is superimposed on the base end surface of the gripping portion 18, so that the second wall portion 36 limits the amount of relative displacement of the gripping portion 18 toward the base side relative to the holding base 10, thereby positioning the gripping portion 18 in the left-right direction relative to the holding base 10.

[0042] The first wall portion 34 is formed with a shaft insertion hole 38 through which the base end portion of the shaft 16 is inserted, and is also provided with a slit 40 that extends from the shaft insertion hole 38 upward toward the tip side of the rising first wall portion 34, so that the shaft 16 extending from the grip portion 18 toward the tip side can be inserted into the shaft insertion hole 38 through the slit 40. Then, by inserting the base end portion of the shaft 16 into the shaft insertion hole 38, the base end portion of the shaft 16 is positioned by the first wall portion 34.

[0043] The second wall 36 has a lower height at the center in the front-rear direction, so that the connection portion 20 protruding from the grip portion 18 toward the base end can protrude toward the base end beyond the second wall 36 at the center in the front-rear direction. The end of the electric wire 22 on the side of the grip portion 18 is positioned in the front-rear direction by both sides in the front-rear direction of the second wall 36, which has a higher height.

[0044] The electric wire 22 of the high-frequency needle 12 is positioned on the holding board 10 at three locations along its length by pairs of electric wire pressing pieces 42, 42, 42. The electric wire pressing pieces 42 serving as holding portions are formed by making substantially V-shaped or substantially U-shaped cuts in the holding board 10, and are elastically tiltable around the uncut side. When the electric wire 22 is inserted below the electric wire pressing pieces 42, upward displacement of the electric wire 22 relative to the upper surface of the substrate 14 (in the forward direction perpendicular to the plane of the paper in FIG. 1 ) is restricted. In other words, the electric wire 22 inserted below the electric wire pressing pieces 42 is pressed against the upper surface of the substrate 14 by the elasticity of the electric wire pressing pieces 42, and is positioned and held in the vertical direction relative to the holding board 10.

[0045] The pair of wire pressing pieces 42, 42 have uncut portions, which are the tilting centers, located on one side of the shaft 16 in the front-to-rear direction, and are arranged so that the protruding directions from the uncut portions are opposite to each other in the front-to-rear direction. The pair of wire pressing pieces 42, 42 are also arranged in close proximity to each other but spaced apart in the left-to-right direction. As a result, the pair of wire pressing pieces 42, 42 limit not only the relative displacement of the shaft 16 with respect to the holding base 10 in the up-and-down direction, but also the relative displacement in the front-to-rear direction.

[0046] The connector 24 of the high-frequency needle 12 is positioned by being inserted into a positioning window 44 formed in the holding base 10. As shown in Fig. 3, the positioning window 44 is a substantially rectangular hole that is elongated in the left-right direction and has a shape that allows the insertion of the base end portion of the connector 24, which is the extending end of the electric wire 22. The positioning window 44 is formed by making a cut in the holding base 10 and cutting and raising a base end side cut-and-raised wall portion 46 and a pair of side cut-and-raised wall portions 48, 48 relative to the base portion 14.

[0047] The base-end cut-and-raised wall 46 is formed by a cut at the base end with a bent portion 47 that is continuous with the base plate 14, and has a concave plate shape overall. The base-end cut-and-raised wall 46 is cut and raised at the opening edge on the base end side of the positioning window 44 so as to stand approximately perpendicular to the base plate 14. The cut-and-raised base-end cut-and-raised wall 46 has a height dimension in the up-down direction that is smaller at the center in the front-to-back direction than at both end portions, and the upper portion, which is the upright tip, is concave when viewed in the left-to-right direction.

[0048] The side cut-and-raised wall portions 48 are formed by cuts with bent portions 49 that are continuous with the base portion 14 at the front and rear outer edges of the positioning window 44, and have an overall trapezoidal plate shape. The side cut-and-raised wall portions 48 are cut and raised at the opening edges on both the front and rear sides of the positioning window 44 so as to stand approximately perpendicular to the base portion 14. The length of the cut-and-raised side cut-and-raised wall portions 48 in the left-right direction increases upward. As shown in FIG. 1, the right end of the base-end cut-and-raised wall portion 46 and the left ends of the pair of side cut-and-raised wall portions 48, 48 are formed by a common cut.

[0049] 4 to 7, the base end portion (left portion) of connector 24 is inserted into positioning window 44, and the tip portion (right portion) is placed on the upper surface of substrate 14 further forward than positioning window 44. Large diameter portion 26 of connector 24 inserted into positioning window 44 protrudes downward from substrate 14. In this way, by inserting the base end portion of connector 24 into positioning window 44, connector 24 is positioned relative to holder mount 10 in the front-to-rear and left-to-right directions.

[0050] The wires 22 extending from the connector 24 extend toward the base end side beyond the upper side of the base end cut-and-raised wall portion 46 at the front-to-rear central portion of the base end cut-and-raised wall portion 46. In this way, the base end portions of the wires 22 at the base end side of the connector 24 are supported from below by the base end cut-and-raised wall portion 46, so that the base end portion of the connector 24 does not fall out downward through the positioning window 44 and is held in a predetermined position in the vertical direction.

[0051] The base-side cut-and-raised wall portion 46 has a vertical height that gradually decreases toward the front-to-rear center, and therefore the wires 22 are guided and positioned by the upper surface of the base-side cut-and-raised wall portion 46 to the front-to-rear center portion of the base-side cut-and-raised wall portion 46. As a result, the extending direction of the wires 22 from the connector 24 is determined by the concave upper surface of the base-side cut-and-raised wall portion 46.

[0052] The connector 24 is positioned relative to the holding backing 10 by limiting the amount of displacement of the connector 24 relative to the holding backing 10 toward the base end with the base end cut-and-raised wall portion 46 overlapping the base end end surface in the left-right direction. Furthermore, the connector 24 is positioned relative to the holding backing 10 by limiting the amount of displacement of the connector 24 relative to the holding backing 10 toward the front and rear with both sides of the connector 24 overlapping the pair of side cut-and-raised wall portions 48, 48 in the front-and-rear direction. In this way, the connector 24 is inserted into the positioning window 44 of the holding backing 10 and is surrounded by the base end cut-and-raised wall portion 46 and the pair of side cut-and-raised wall portions 48, 48, so that the connector 24 is more firmly positioned relative to the holding backing 10, which more effectively prevents the connector 24 from being unintentionally detached from the holding backing 10 during storage, transportation, etc.

[0053] The high-frequency needle 12 set on the holding mount 10 is housed together with the holding mount 10 in a bag 50, as shown in Fig. 2. The bag 50 is a substantially rectangular bag that is slightly larger than the holding mount 10, and has an opening part 52 at the left end, which is one end in the longitudinal direction. The opening part 52 can be easily torn and opened, for example, by pulling it to the left, and the high-frequency needle 12 can be removed from the bag 50 through the opened opening part 52. The opening part 52 of the bag 50 is located on the base end side of the housed high-frequency needle 12.

[0054] When removing the high-frequency needle 12 from the bag body 50, it is desirable to remove the high-frequency needle 12 together with the holding mount 10 and then detach the high-frequency needle 12 from the holding mount 10. However, in busy medical settings, it is also possible to remove the high-frequency needle 12 from the bag body 50 and also from the holding mount 10 at the same time, thereby removing only the high-frequency needle 12 while leaving the holding mount 10 inside the bag body 50.

[0055] Therefore, in this embodiment, the high-frequency needle 12 can be easily removed from the holding mount 10 by pulling the high-frequency needle 12 toward the base end where the tear-open portion 52 is set. More specifically, for example, by inserting a hand into the bag body 50 through the opened tear-open portion 52, grasping the grip portion 18 of the high-frequency needle 12 and pulling it toward the base end, the high-frequency needle 12 is released from the holding mount 10 and is taken out to the outside through the tear-open portion 52 of the bag body 50, leaving the holding mount 10 inside the bag body 50.

[0056] When the high-frequency needle 12 is pulled toward the base end by holding the gripping portion 18 as described above, the shaft 16 easily displaces toward the base end relative to the holding base 10 and is detached from the holding base 10. However, when the connector 24 inserted into the positioning window of a conventional holding base is pulled toward the base end via the electric wire 22 interposed between it and the gripping portion 18, it may get caught on the edge of the base end side of the positioning window and be difficult to remove from the holding base.

[0057] Therefore, in the retaining base 10 of this embodiment, a base-side cut-and-raised wall portion 46 erected at the base edge of the positioning window 44 forms a guide portion that assists the connector 24, which is pulled toward the base end, in slipping out of the positioning window 44.

[0058] That is, when the gripping portion 18 is pulled toward the base end to remove the high-frequency needle 12 from the bag body 50, the gripping portion 18 is pulled toward the base end while being lifted upward from the holding mount 10. As a result, the electric wire 22 connected to the gripping portion 18 pulls the connector 24 diagonally upward toward the base end. As a result, the base end of the connector 24 moves upward relative to the base end edge of the positioning window 44, and the base end of the connector 24 moves toward the base end without getting caught on the base end edge of the positioning window 44. Note that the direction in which the connector 24 is displaced when pulled by the electric wire 22 is stably in the left-right direction because the extension direction of the electric wire 22 from the connector 24 is determined by the concave shape of the upper surface of the base end cut-and-raised wall portion 46, and unintended displacement of the connector 24 in the front-to-back direction, etc., is prevented.

[0059] 8 and 9, when the connector 24 moves toward the base end, the base end cut-and-raised wall portion 46 is pushed down and tilted by the connector 24. Then, the connector 24 moves diagonally upward toward the base end along the tilted base end cut-and-raised wall portion 46, and the connector 24 comes out of the positioning window 44. In this way, the guiding action of the tilted base end cut-and-raised wall portion 46 as a guide portion allows the connector 24 to smoothly come out of the positioning window 44, and the high-frequency needle 12 can be removed from the holding mount 10.

[0060] 10 , the large diameter portion 26 of the connector 24, which is particularly likely to get caught on the base end edge of the positioning window 44, moves over the base end edge of the positioning window 44 toward the base end side while being positioned above the base end edge of the positioning window 44 by the small diameter base end portion of the connector 24 extending from the large diameter portion 26 toward the base end abutting against the tilted base end cut-and-raised wall portion 46 that serves as a guide. In this way, the base end of the connector 24 moves toward the base end while being guided upward along the tilted base end cut-and-raised wall portion 46, thereby preventing the large diameter portion 26 of the connector 24 from getting caught on the base end edge of the positioning window 44.

[0061] In this way, the base end cut-and-raised wall 46 of the holding board 10 functions as a guide, making it less likely that the connector 24 will get caught when the gripping part 18 of the high-frequency needle 12 is pulled toward the base end, and making it possible to easily remove the high-frequency needle 12. The holding of the high-frequency needle 12 by the holding board 10 is not easily released by the action of an unintended external force, but is easily released by intentionally pulling the gripping part 18 toward the base end, preventing damage due to unintended removal from the holding board 10 and enabling the needle to be easily removed from the package consisting of the holding board 10 and bag 50 when in use.

[0062] The magnitude of the force required to remove the connector 24 from the positioning window 44 is desirably within a range of, for example, 2 N to 10 N. Requiring a force of 2 N or more to remove the connector 24 from the positioning window 44 prevents the connector 24 from unintentionally removing from the positioning window 44 due to the action of an external force during transportation, for example, and reliably prevents the connector 24 from coming off the holding base 10. Furthermore, because the connector 24 removes from the positioning window 44 with a relatively small force of 10 N or less, the high-frequency needle 12 can be easily removed by pulling the gripping portion 18 toward the base end, and breakage or deformation of the electric wire 22 due to a strong pulling force is prevented.

[0063] 9, even when the high-frequency needle 12 is set on the holding board 10 and housed in the bag 50, and the upward relative displacement of the connector 24 from the holding board 10 is restricted by the bag 50, the connector 24, guided by the proximal cut-and-raised wall 46, moves toward the proximal end while pushing the bag 50 outward in the vertical direction. Therefore, the connector 24 comes out stably upward through the positioning window 44, and the high-frequency needle 12 can be stably and smoothly removed from the holding board 10.

[0064] Furthermore, although the specific shape and size (height) of the base-side cut-and-raised wall portion 46 are not limited in this embodiment, taking into consideration the stable guiding action and shape stability when the connector 24 is removed, for example, the height dimension (maximum height dimension) of the base-side cut-and-raised wall portion 46 is preferably 4 mm or more, more preferably 7 mm or more, and desirably 20 mm or less. Alternatively, the height dimension (maximum height dimension) of the base-side cut-and-raised wall portion 46 is preferably 1 / 3 or more of the outer diameter dimension of the large-diameter portion 26 of the connector 24, more preferably 1 / 2 or more, and desirably 1.5 times or less of the outer diameter dimension of the large-diameter portion 26.

[0065] 11 shows a holder board 60 according to a second embodiment of the present invention. The holder board 60 is provided with a positioning window 62. In the following description, the same reference numerals are used to designate components and parts that are essentially the same as those in the first embodiment, and description thereof will be omitted.

[0066] 12 and 13 , the positioning window 62 is formed by cutting and raising a pair of side cut-and-raised walls 48, 48 formed by cutting the holding mount 60 so that they stand approximately perpendicular to the base plate 14. Compared to the positioning window 44 of the first embodiment, the positioning window 62 of this embodiment has a shape that does not have a base end portion formed by providing the base end cut-and-raised wall 46, and the base end edge has a pair of inclined edges 64, 64 that incline toward the base end toward the inside in the front-to-rear direction. Therefore, the front end portion of the positioning window 62 has a substantially constant front-to-rear width dimension, and the base end portion has a tapered shape that narrows in the front-to-rear direction toward the base end side due to the pair of inclined edges 64, 64.

[0067] 14, the connector 24 of the high-frequency needle 12 is inserted into and held in the positioning window 62 of the holding mount 60. A pair of side cut-and-raised walls 48, 48 are arranged on both the front and rear sides of the connector 24 inserted into the positioning window 62, and the connector 24 is positioned and held in place relative to the holding mount 60 in the front-to-rear direction.

[0068] When the gripping portion 18 of the high-frequency needle 12 is pulled toward the proximal end, the connector 24 is pulled toward the proximal end via the electric wire 22. Then, when the proximal edge of the cylindrical outer circumferential surface of the connector 24 abuts against the inclined edges 64, 64 of the positioning window 62, the connector 24 is pulled further toward the proximal end, and an upward abutment reaction force is exerted from the inclined edges 64, 64 serving as detachment aids, causing the proximal end to tilt upward as shown in Fig. 15. As a result, the connector 24 smoothly comes out of the positioning window 62 and is removed from the holding board 60. Therefore, the high-frequency needle 12 held by the holding board 60 can be easily removed from the holding board 60 by pulling the gripping portion 18 toward the proximal end.

[0069] Furthermore, in this embodiment, the base-side small diameter portion protruding leftward from the large diameter portion 26 of the connector 24 rides up on the retaining mount 60, and particularly in this embodiment, the tip-side small diameter portion protruding rightward from the large diameter portion 26 of the connector 24 also rides up on the retaining mount 60. This reduces the insertion depth of the large diameter portion 26 into the positioning window 62, which could cause the large diameter portion 26 to get caught in the positioning window 62 (for example, less than ½, preferably ⅓ or less, and more preferably ¼ or less of the outer diameter of the large diameter portion 26). Because the insertion depth of the large diameter portion 26 into the positioning window 62 is reduced when the connector 24 is pulled out, the component in the riding direction of the abutment reaction force acting on the base-side outer peripheral edge of the large diameter portion 26 that abuts against the inclined edge 64 of the positioning window 62 when the connector 24 is pulled out becomes larger, making it easier for the large diameter portion 26 of the connector 24 to come out of the positioning window 62.

[0070] In this way, in the retaining base 60 of this embodiment, the inclined shape of the base edge of the positioning window 62 is utilized to assist the connector 24 in slipping out of the positioning window 62, so that the connector 24 can be stably removed from the retaining base 60 regardless of the elasticity of the retaining base 60, etc.

[0071] The pair of inclined edges 64, 64 may have different inclination angles relative to the left-right direction, but preferably have approximately the same inclination angle. In short, the pair of inclined edges 64, 64 are desirably symmetrical with respect to the left-right axis passing through the center of the front-rear of the positioning window 62. In this way, the front-rear direction components of the abutment reaction forces exerted on the connector 24 by abutting against each inclined edge 64 cancel each other out, thereby suppressing tilting of the connector 24 in the front-rear direction.

[0072] Furthermore, although the inclination angle of the inclined edge 64 is not limited, considering compatibility and effectiveness between the positioning action of the connector 24 by the positioning window 62 and the action of extracting the connector 24 during extraction, the inclination angle of the inclined edge 64 with respect to the extraction direction (left and right direction in the figure) is preferably set in the range of 10 to 80 degrees, more preferably in the range of 30 to 60 degrees. This preferable setting range for the inclination angle also applies to cases where the lengths and inclination angles of the inclined edges 64, 64 on both the front and rear sides are different from each other, or to inclined edges that are inclined only in one direction, such as the front and rear.

[0073] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the specific description. For example, the holding structure for holding the parts of the medical device other than the connector is merely an example and is not particularly limited, and does not necessarily have to be formed by cutting and raising.

[0074] The shape of the base-side cut-and-raised wall portion is not limited. Specifically, for example, the vertical height dimension of the base-side cut-and-raised wall portion may be approximately constant in the front-to-rear direction, or may increase toward the center in the front-to-rear direction. Furthermore, the shape of the lateral cut-and-raised wall portion is not limited. Specifically, for example, the horizontal length dimension of the lateral cut-and-raised wall portion may be approximately constant in the front-to-rear direction, or may decrease toward the top.

[0075] The positioning window does not necessarily have to be formed entirely by cutting and raising the base-side cut-and-raised wall portion or the lateral cut-and-raised wall portion, but may be formed, for example, by cutting out a portion thereof. If the positioning window is formed by cutting out a portion thereof in this manner, the shape and size of the positioning window are less likely to be restricted by the shape and size of the cut-and-raised wall portion.

[0076] The outer shape of the holder mount is not limited to a rectangle, but may be, for example, any of various polygonal shapes such as a square, or a circle including an oval.

[0077] The medical instrument held by the holding mount is not limited to the high-frequency needle 12 shown in the above embodiment, but may be, for example, a catheter having a lumen. When the medical instrument is a catheter, the gripping portion may be a hub through which a guide wire can be inserted and to which a syringe or external circuit can be connected. The connector may also be a three-way stopcock, and in this case, the long portion may be a tube or the like instead of an electric wire. [Explanation of symbols]

[0078] 10. Holding mount (first embodiment) 12 High frequency needle (medical device) 14 Circuit board 16 shaft 18 Gripping part 20 Connection 22 Electric wire (long section) 24 connectors 26 Large diameter section 28 Shaft retainer 30 Tip clamp piece 34 First wall 36 Second wall 38 Shaft insertion hole 40 slits 42 Wire clamp (holding part) 44 Positioning window 46 Proximal cut-and-raised wall section 47 Folding part 48 Lateral cut-and-raised wall 49 Folding part 50 bags 52 Opening section 60 Holding mount (second embodiment) 62 Positioning window 64 Inclined edge (detachment aid)

Claims

1. A medical instrument holder that holds a medical instrument having a connector at the end of a long portion extending from a gripping portion provided at the base end of a shaft, and that can be removed by pulling the gripping portion toward the base end of the shaft, A positioning window is formed in which the connector is positioned, a pair of side cut-and-raised wall portions rising from both side edge portions of the positioning window to limit lateral displacement of the connector, and a base end cut-and-raised wall portion rising from the base end side edge portion of the positioning window to limit displacement of the connector toward the base end side, The base end cut-and-raised wall portion serves as a guide portion that assists the connector in moving toward the base end and removing it from the positioning window by tilting it toward the base end.

2. 2. The medical instrument holder according to claim 1, wherein the raised tip of the base end cut-and-raised wall portion is formed into a concave shape for positioning the elongated portion.

3. A medical instrument holder that holds a medical instrument having a connector at the end of a long portion extending from a gripping portion provided at the base end of a shaft, and that can be removed by pulling the gripping portion toward the base end of the shaft, A positioning window is formed in which the connector is positioned, A pair of side cut-out walls are formed on the periphery of the positioning window, rising on both sides of the positioning window to limit lateral displacement of the connector, an edge portion on a base end side of the positioning window is an inclined edge portion extending at an angle with respect to a pulling direction of the elongated portion, The inclined edge portion serves as a removal assist portion that applies a contact reaction force to the connector in a direction that causes it to come out of the positioning window.

4. The medical instrument holder board according to claim 3, wherein the inclined edge portion is inclined toward the base end side as it goes laterally inward.

5. The medical device is housed in a longitudinal bag while being held therein, 5. The medical instrument holder according to claim 1, wherein the opening portion of the bag body for removing the medical instrument is located at one end in the longitudinal direction that is the base end side of the shaft.

6. A medical instrument holder according to any one of claims 1 to 4, comprising a holding portion that holds the elongated portion at the end on the connector side while allowing displacement of the elongated portion in the longitudinal direction.

7. 5. The medical instrument holder according to claim 1, wherein the force required to remove the connector from the positioning window is within a range of 2N to 10N.

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