WO2013146546A1

WO2013146546A1 - Introducer

Info

Publication number: WO2013146546A1
Application number: PCT/JP2013/058126
Authority: WO
Inventors: 遼岡村; 侑振矢崎
Original assignee: テルモ株式会社
Priority date: 2012-03-27
Filing date: 2013-03-21
Publication date: 2013-10-03
Also published as: JP3196143U

Abstract

[Problem] To provide an introducer with which introducers equipped with a sheath tube, the thickness of which has been made thinner, can be easily distinguished from introducers equipped with a conventional sheath tube, the thickness of which has not been made thinner, and with which the relationship between the internal diameter and the external diameter of a thinned sheath tube can be easily perceived. [Solution] The introducer (10) has an introducer sheath (20), a dilator (30), and a three-way stopcock (40). The introducer also has first information (51), which is displayed on either the dilator or the three-way stopcock and indicates the internal diameter measurement of the sheath tube (21), and second information (52), which is displayed on the other of the dilator and the three-way stopcock and indicates the external diameter measurement of the sheath tube (21).

Description

Introducer

The present invention relates to an introducer.

In recent years, various forms of treatments and examinations have been performed in medicine using an elongated hollow tubular medical device called a catheter. Such treatment methods include the method of administering a drug directly to the affected area using the length of the catheter, and the use of a catheter attached to the tip of a balloon that expands by pressurization to push the stenotic part in the body cavity. There are a method of opening, a method of scraping and opening the affected part using a catheter with a cutter attached to the tip, and a method of closing the aneurysm, bleeding site or feeding blood vessel using a catheter. In addition, there is a treatment method in which a tube-shaped stent having a meshed side surface is implanted into a body cavity using a catheter in order to maintain the stenosis in the body cavity in an open state. Furthermore, there is a suction of a thrombus in a blood vessel.

In general, an introducer is used when performing treatment / examination using a catheter. The introducer is a sheath for an introducer including a sheath tube introduced into the puncture site, a dilator inserted into the lumen of the sheath tube, a three-way cock part provided to communicate with the lumen of the sheath tube, (See Patent Document 1). Then, a sheath tube is introduced into the puncture site formed on the arm or leg, and a catheter or the like is percutaneously inserted into a lesioned portion such as a blood vessel through the lumen of the sheath tube.

Introducers are generally color-coded based on color codes. The color code indicates by color the maximum diameter of a device (medical instrument such as a catheter) that can be inserted through the lumen of the sheath tube in the introducer sheath.

Japanese Utility Model Publication No. 6-48684

In order to facilitate introduction into the puncture site by reducing the outer diameter of the sheath tube, or to increase the inner diameter of the sheath tube so that a device having a larger outer diameter can be inserted, the thickness of the sheath tube is reduced. It is possible to make it thinner.

When the same color code is used for an introducer with a thin sheath tube, the difference between the introducer with a conventional sheath tube that is not thin is easily recognized. There is a problem that can not be. This problem can occur either before or after the introducer sheath and dilator are set.

Also, there is a problem that the relationship between the inner diameter and the outer diameter cannot be recognized for the sheath tube having a reduced thickness. For this reason, the maximum diameter of the medical device that can be inserted is an introducer that includes a sheath tube that has a smaller outer diameter while maintaining the conventional diameter, or the maximum diameter of the medical device that can be inserted with a conventional outer diameter is increased. It is not possible to recognize whether the introducer has a sheath tube.

Therefore, an object of the present invention is to easily distinguish an introducer including a sheath tube with a reduced thickness from an introducer including a conventional sheath tube that is not reduced in thickness. An object of the present invention is to provide an introducer capable of easily recognizing the relationship between the inner diameter and the outer diameter of a thinned sheath tube.

The above objective is achieved by the following means.

(1) An introducer sheath comprising a long hollow sheath tube and a sheath hub provided on the proximal end side of the sheath tube and provided with an insertion port for inserting a dilator;
A dilator comprising: a dilator tube inserted through the sheath tube; and a dilator hub provided on a proximal end side of the dilator tube;
A three-way cock part comprising a connection tube having one end connected to the sheath hub, and a three-way cock body connected to the other end of the connection tube;
First information appearing in any one of the dilator and the three-way cock part, and using the inner diameter dimension of the sheath tube as an index,
Second information that appears on the other side of the dilator and the three-way cock part and uses the outer diameter of the sheath tube as an index,
Introducer with.

(2) The first information or the second information displayed on the dilator is displayed on at least one of the dilator tube and a dilator hub,
The introducer according to (1), wherein the first information or the second information that appears in the three-way cock part appears in at least one of the connection tube and the three-way cock body.

(3) The introducer according to (1) or (2), wherein the first information is shown in the dilator.

(4) In the applied sheath tube,
(A) a first sheath tube having a wall thickness of T1 and an outer diameter of D1o;
(B) a second sheath tube having a thickness T1 that is the same as that of the first sheath tube and an outer diameter of D2o (D1o <D2o) that is set to be one step larger than the first sheath tube;
(C) The wall thickness is T2 (T2 <T1) thinner than the first and second sheath tubes, the outer diameter dimension is larger than the outer diameter dimension D1o of the first sheath tube, and the second D3o (D1o <D3o <D2o) smaller than the outer diameter D2o of the sheath tube, the inner diameter dimension is larger than the inner diameter dimension D1i of the first sheath tube, and the inner diameter dimension D2i of the second sheath tube A third sheath tube that does not exceed D3i (D1i <D3i ≦ D2i);
Including
The first information that appears when applying the third sheath tube is the same as the first information that appears when applying the second sheath tube;
The second information that appears when the third sheath tube is applied is the same as the second information that appears when the first sheath tube is applied. The introducer according to any one of (3) above.

(5) In the sheath tube to be applied,
(A) a first sheath tube having a wall thickness of t1 and an outer diameter of d1o;
(B) a second sheath tube having a wall thickness t1 which is the same as that of the first sheath tube and an outer diameter of d2o (d1o <d2o) set as a size one step larger than that of the first sheath tube;
(C) d3o (d3o <d1o <d2o) whose thickness is thinner than the first and second sheath tubes t2 (t2 <t1) and whose outer diameter is smaller than the outer diameter d1o of the first sheath tube. ), A third sheath tube having an inner diameter dimension d3i (d1i <d3i ≦ d2i) which is larger than the inner diameter dimension d1i of the first sheath tube and does not exceed the inner diameter dimension d2i of the second sheath tube; Including
The first information that appears when applying the third sheath tube is the same as the first information that appears when applying the second sheath tube;
The second information that appears when the third sheath tube is applied is the same as the second information that appears when the first sheath tube is applied. The introducer according to any one of (3) above.

(6) The first information includes at least one of a color and a number.
The introducer according to any one of (1) to (5), wherein the second information includes at least one of a color and a number.

According to the invention described in the above (1), the introducer may provide the dilator or the three-way stopcock portion with the first information using the inner diameter dimension of the sheath tube as an index and the outer diameter dimension of the sheath tube as an index. Therefore, it is possible to easily recognize a difference between an introducer including a sheath tube having a reduced thickness and an introducer including a conventional sheath tube having a reduced thickness. For example, when the first information is the Fr size of the sheath tube using the inner diameter dimension of the sheath tube as an index, and the second information is the Fr size of the sheath tube using the outer diameter dimension of the sheath tube as an index. In the case of a conventional sheath tube in which the wall thickness is not reduced, the first information and the second information are the same. On the other hand, in the case of a sheath tube having a reduced thickness, the first information and the second information are different because the outer diameter can be reduced, for example, by 1 Fr while keeping the inner diameter the same. . In other words, when the first information and the second information are the same, the user can easily identify that the introducer includes a conventional sheath tube whose thickness is not reduced. On the other hand, when the first information and the second information are different, the user can easily identify that the introducer includes a sheath tube having a reduced thickness.

Furthermore, since the introducer includes first information that uses the inner diameter dimension of the sheath tube as an index and second information that uses the outer diameter dimension of the sheath tube as an index, the inner diameter and The relationship with the outer diameter becomes clear.

In this way, the user is aware of the relationship between the inner and outer diameters of a thin sheath tube, whether it is a thin sheath tube during preparation or use as an introducer. become able to. Thereby, the preparation work of the device to be inserted next can be proceeded smoothly and quickly, and the device size can be prevented from being mixed up.

According to the invention described in (2) above, it is possible to select a portion where the first information and the second information appear on the introducer, and the first information or the second information can be selected for each member included in the dilator. The information can be displayed, or the first information or the second information can be displayed on individual members included in the three-way cock.

According to the invention described in (3) above, since the first information appears on the dilator, the inner diameter of the sheath tube appears at a position close to the insertion port of the sheath hub, so that the device can be inserted into the insertion port. It becomes easy to recognize the maximum size of.

According to the invention described in (4) above, the third sheath tube is a sheath tube having a smaller thickness than the first and second sheath tubes, and has an outer diameter of the first sheath tube. And the inner diameter is the same as that of the second sheath tube, and the device of one size can be inserted while reducing the outer diameter size. With respect to the introducer including the sheath tube having a reduced thickness as described above, the effects described in any one of (1) to (3) above are achieved.

According to the invention described in (5) above, the third sheath tube is a sheath tube having a smaller wall thickness than the first and second sheath tubes, and the outer diameter is the first and second. Since it is smaller than the sheath tube, the outer diameter size can be reduced and inserted. In addition, when the inner diameter dimension is a size between the inner diameter dimensions of the first and second sheath tubes, a device of one size can be inserted. With respect to the introducer including such a sheath tube, the effects described in any one of (1) to (3) above are exhibited.

According to the invention described in (6) above, the first and second information can be easily expressed using colors and numbers.

It is a top view which shows the schematic structure of an introducer in the state which set the sheath for introducers, and the dilator. It is a top view which shows the schematic structure of an introducer in the state which decomposed | disassembled the sheath for introducers, and a dilator. It is sectional drawing which shows the principal part of an introducer. It is a figure which shows the state which has inserted the catheter through the introducer sheath introduce | transduced into the puncture site | part. 5A and 5D are cross-sectional views showing a sheath tube having a relatively thick wall thickness (t = T1), and FIGS. 5B and 5C have relatively thick wall thicknesses (t = T2, T3). It is sectional drawing which shows a thin sheath tube. 6A, 6B, and 6C are cross-sectional views illustrating first to third sheath tubes applied to the introducer, and the third sheath tubes are the first and second sheath tubes. The sheath tube has a smaller wall thickness than the first sheath tube, the outer diameter dimension is the same as the first sheath tube, the inner diameter dimension is the same as the second sheath tube, and the outer diameter size is reduced. 1 shows a tube through which a device of one size can be inserted. FIGS. 7A, 7B, and 7C are cross-sectional views illustrating first to third sheath tubes applied to the introducer, and the third sheath tubes are the first and second sheath tubes. The outer tube has a smaller outer diameter than the first and second sheath tubes, and can be inserted with a reduced outer diameter size. .

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation, and may be different from the actual ratios.

FIG. 1 is a plan view showing a schematic configuration of the introducer 10 in a state where the introducer sheath 20 and the dilator 30 are set, and FIG. 2 shows the schematic configuration of the introducer 10 with the introducer sheath 20 and the die. FIG. 3 is a cross-sectional view showing the main part of the introducer 10. FIG. 4 is a view showing a state in which the catheter 70 is inserted through the introducer sheath 20 introduced into the puncture site.

The introducer 10 is a device for securing an access route into the body cavity. In the following description, the hand operation unit side of the device is referred to as “proximal end side”, and the side inserted into the body cavity is referred to as “distal end side”.

Referring to FIGS. 1 to 3, the introducer 10 generally includes an introducer sheath 20, a dilator 30, and a three-way cock part 40. The introducer sheath 20 includes a long hollow sheath tube 21 and a sheath hub 22 provided on the proximal end side of the sheath tube 21 and provided with an insertion port 25a into which the dilator 30 is inserted. The dilator 30 includes a dilator tube 31 inserted into the sheath tube 21 and a dilator hub 32 provided on the proximal end side of the dilator tube 31 and connectable to the sheath hub 22. The three-way cock part 40 includes a connection tube 41 having one end connected to the sheath hub 22 and a three-way cock body 42 connected to the other end of the connection tube 41. Referring to FIG. 4, after introducing introducer sheath 20 to the puncture site, dilator 30 is removed, and a device such as catheter 70 is percutaneously inserted into the blood vessel or the like via the lumen of introducer sheath 20. Insert into the lesion. In addition, TRI (Trans Radial intervention) that introduces the introducer sheath 20 from the arm is easier to stop, has a shorter rest time, and has fewer bleeding complications than TFI (Trans Femoral intervention) that is introduced from the foot. There are advantages for both patients and hospitals. Hereinafter, the introducer 10 will be described in detail.

The introducer sheath 20 is placed in a body cavity, and a device such as a catheter 70, a guide wire, or an embolus is inserted into the sheath 20 and introduced into the body cavity.

The sheath tube 21 is percutaneously introduced into the body cavity. The sheath tube 21 is formed in an elongated tubular shape, and the proximal end side thereof is connected to the distal end side of the sheath hub 22. The sheath tube 21 includes a distal end portion 21a having a tapered outer diameter and a main body portion 21b having a constant outer diameter.

The constituent material of the sheath tube 21 is not particularly limited. For example, polyolefin (for example, polyethylene, polypropylene, polybutene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer, or a mixture of two or more of these) Polyolefin elastomer, crosslinked polyolefin, polyvinyl chloride, polyamide, polyamide elastomer, polyester, polyester elastomer, polyurethane, polyurethane elastomer, fluororesin, polycarbonate, polystyrene, polyacetal, polyimide, polyetherimide, aromatic polyether ketone A polymer material such as these or a mixture thereof can be used. An ethylene tetrafluoroethylene copolymer (ETFE) can be suitably used.

As shown in FIG. 3, the sheath hub 22 includes a sheath support 23 provided on the proximal end side of the sheath tube 21, a housing 24 provided on the proximal end side of the sheath support 23, and an attachment attached to the housing 24. It has the cap 25 in which the opening | mouth 25a was formed, and the tab part 26 in which the hole part 26a for fixing the introducer sheath 20 was formed.

The sheath support 23 has a distal end that is reduced in diameter to a curved surface in order to prevent the sheath tube 21 from being bent. The material of the sheath support 23 is preferably a flexible resin in order to prevent the sheath tube 21 from being bent, and a thermoplastic elastomer such as SEBS can be used.

The distal end side of the housing 24 is connected to the proximal end side of the sheath support 23, and the proximal end side extends beyond the sheath support 23. A side port 27 communicating with the lumen of the sheath tube 21 is formed on the side of the housing 24.

The constituent material of the housing 24 is not particularly limited, but a hard material such as a hard resin is suitable. Specific examples of the hard resin include polyolefin such as polyethylene and polypropylene, polyamide, polycarbonate, polystyrene, and the like.

A hemostasis valve 28 is attached to the proximal end side of the housing 24. The hemostatic valve 28 has a substantially elliptical membrane shape (disc shape). The constituent material of the hemostatic valve 28 is not particularly limited, and examples thereof include silicone rubber, latex rubber, butyl rubber, and isoprene rubber which are elastic members.

The cap 25 sandwiches the outer peripheral portion of the hemostasis valve 28 between the housing 24 and fixes the hemostasis valve 28. The constituent material of the cap 25 is not particularly limited, but the same material as the constituent material of the housing 24 can be applied.

The tab portion 26 is integrally provided on the proximal end side of the sheath support 23 in the illustrated embodiment. The introducer sheath 20 is fixed to the puncture site by appropriately using the hole portion 26a formed in the tab portion 26 and the fixing groove 23a formed in the sheath support 23.

The tab portion 26 may be separate from the sheath support 23. Furthermore, the tab portion 26 may be provided so as to be rotatable about the axis of the sheath tube 21 in order to facilitate adjustment of the position of the tab portion 26 during the fixing operation.

The dilator 30 is used to prevent the sheath tube 21 from being broken or to enlarge the skin perforation when the introducer sheath 20 is inserted into the blood vessel.

The dilator tube 31 is inserted into the sheath tube 21. As shown in FIG. 1, the tip of the dilator tube 31 protrudes from the tip of the sheath tube 21.

Examples of the constituent material of the dilator tube 31 include polyolefin (eg, polyethylene, polypropylene, polybutene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer, or a mixture of two or more of these), polyolefin Polymers such as elastomer, cross-linked polyolefin, polyvinyl chloride, polyamide, polyamide elastomer, polyester, polyester elastomer, polyurethane, polyurethane elastomer, fluororesin, polycarbonate, polystyrene, polyacetal, polyimide, polyetherimide, aromatic polyetherketone A material or a mixture thereof can be used.

The dilator hub 32 includes a locking claw 33 that extends toward the tip side. The locking claw 33 has a protrusion on the inner side, and fits in an annular groove 29 provided on the proximal end side of the sheath hub 22. The dilator hub 32 is detachably held with respect to the sheath hub 22 by the locking claws 33 of the dilator hub 32 and the annular groove 29 of the sheath hub 22.

The constituent material of the dilator hub 32 is not particularly limited, but a hard material such as a hard resin is suitable. Specific examples of the hard resin include polyolefin such as polyethylene and polypropylene, polyamide, polycarbonate, polystyrene, and the like.

One end of the connection tube 41 of the three-way stopcock portion 40 is liquid-tightly connected to a side port 27 provided on the sheath hub 22. The connection tube 41 is composed of a flexible tube made of polybutadiene, for example. A three-way cock body 42 is attached to the other end of the connection tube 41. A liquid such as physiological saline is injected from the port of the three-way cock main body 42 into the introducer sheath 20 through the connection tube 41.

5A and 5D are cross-sectional views showing

sheath tubes

100 and 103 having a relatively large thickness (t = T1), and FIGS. 5B and 5C are thicknesses (t = T2 and T3). FIG. 3 is a cross-sectional view showing

sheath tubes

101 and 102 that are relatively thin.

As shown in FIGS. 5A and 5B, by reducing the wall thickness (t = T2, T1> T2) of the sheath tube 101, the outer diameter dimension φ3 is set to, for example, 1 while keeping the inner diameter dimension φ1 the same. French size (Fr size) can be reduced (φ2> φ3). Here, the French size (Fr size) of the sheath tube indicates the maximum diameter of a device (medical instrument such as the catheter 70) that can be inserted through the lumen of the sheath tube. Further, as shown in FIGS. 5A and 5C, by reducing the wall thickness (t = T3, T1> T3) of the sheath tube 102, the inner diameter dimension φ4 is maintained while the outer diameter dimension φ2 remains the same. It becomes larger (φ4> φ1), and a device having a larger outer diameter can be inserted. On the other hand, as shown in FIGS. 5A and 5D, even when the outer diameter dimension φ3 is reduced by 1 Fr while maintaining the thickness (t = T1) of the sheath tube 103 (φ2> φ3), the inner diameter dimension φ5 Since the size is also reduced (φ1> φ5), only a device having a small outer diameter can be inserted after all.

応用 By reducing the thickness of the sheath tube 21, the application range is expanded as follows. In a conventional sheath tube that is not thinned, the outer diameter of the sheath tube (7Fr size) through which the 7Fr size device is inserted is larger than the diameter of the radial artery (about 2.9 ± 0.6 mm). Due to the large size, the TRI procedure cannot be performed using a device such as a 7Fr size catheter 70. On the other hand, in the sheath tube 21 having a reduced wall thickness, the outer diameter can be reduced by 1 Fr while keeping the inner diameter the same (6 Fr size). This makes it possible to perform a TRI procedure using a 7Fr size device. In the sheath tube 21 having a reduced wall thickness, a device having an outer diameter of 7 Fr can be inserted into the sheath tube 21 having an outer diameter of 6 Fr. In the present specification, the size of the thinned sheath tube 21 capable of such a device size-sheath size combination is denoted as “7 in 6”.

The combination of device size and sheath size is not limited to “7 in 6”, and can be applied to all sizes. For example, “11in10”, “10in9”, “9in8”, “8in7”, “7in6”, “6in5”, “5in4”, “4in3”, “3in2” are reduced by 1Fr. can do.

Furthermore, by reducing the outer diameter of the sheath by 1 Fr, the insertion mark of the human body is reduced and the hemostasis time is shortened. This shortens the time spent in the hospital, which reduces the physical burden on the hospital as well as the physical burden on the patient.

As described above, by reducing the thickness of the sheath tube 21, the outer diameter dimension can be reduced by 1 Fr while keeping the inner diameter dimension the same. However, when the same color code is used for the introducer 10 including the sheath tube 21 having a reduced thickness, the difference from the introducer 10 including the conventional sheath tube not having a reduced thickness is used. Cannot be easily recognized. Further, the relationship between the inner diameter and the outer diameter cannot be recognized for the sheath tube 21 having a reduced thickness.

The introducer 10 of the present embodiment that solves the above-described problems when the thickness of the sheath tube 21 is reduced will be described in detail.

As described above, the introducer 10 of the present embodiment includes the introducer sheath 20, the dilator 30, and the three-way stopcock portion 40. The introducer sheath 20 includes a long hollow sheath tube 21 and a sheath hub 22 provided on the proximal end side of the sheath tube 21 and including an insertion port 25a into which the dilator 30 is inserted. The dilator 30 includes a dilator tube 31 inserted through the sheath tube 21 and a dilator hub 32 provided on the proximal end side of the dilator tube 31. The three-way cock part 40 includes a connection tube 41 having one end connected to the sheath hub 22 and a three-way cock body 42 connected to the other end of the connection tube 41. The introducer 10 further includes first information 51 that appears on one of the dilator 30 and the three-way stopcock portion 40 (for example, the dilator 30) and uses the inner diameter dimension of the sheath tube 21 as an index, and the dilator 30. And the second information 52 that appears on the other side of the three-way cock part 40 (for example, the three-way cock part 40) and uses the outer diameter dimension of the sheath tube 21 as an index. In the present embodiment, the first information 51 is composed of color, and the second information 52 is also composed of color.

The site where the first information 51 and the second information 52 appear on the introducer 10 can be appropriately modified. In the present embodiment, the first information 51 or the second information 52 is provided to the members (the dilator tube 31 and the dilator hub 32) included in the dilator 30, and the members (the connection tube 41, and the three-way stopcock portion 40) are provided. The first information 51 or the second information 52 appears on the three-way cock main body 42). In the present embodiment, the combinations of the first information 51 and the second information 52 appearing in the dilator 30 and the three-way stopcock portion 40 are as shown in Table 1 below.

As described above, the Fr size of the sheath tube 21 indicates the maximum diameter of the device that can be inserted through the lumen of the sheath tube 21. For example, the first information 51 is the Fr size of the sheath tube 21 with the inner diameter dimension of the sheath tube 21 as an index, and the second information 52 is the sheath information of the sheath tube 21 with the outer diameter dimension of the sheath tube 21 as an index. Take the case of Fr size as an example. In this case, the first information 51 and the second information 52 are the same for a conventional sheath tube that is not thinned. On the other hand, in the case of the sheath tube 21 having a reduced wall thickness, the outer diameter can be reduced to, for example, 1 Fr size while keeping the inner diameter the same. Therefore, the first information 51 and the second information 52 are Come different. In other words, when the first information 51 and the second information 52 are the same, the user can easily identify the introducer 10 including the conventional sheath tube that is not thinned. . On the other hand, when the first information 51 and the second information 52 are different, the user can easily identify the introducer 10 including the sheath tube 21 with a reduced thickness.

Thus, since the introducer 10 includes the first information 51 using the inner diameter dimension of the sheath tube 21 as an index and the second information 52 using the outer diameter dimension of the sheath tube 21 as an index, the thickness is reduced. The difference between the introducer 10 including the sheath tube 21 and the introducer 10 including the conventional sheath tube that is not thinned can be easily recognized.

Furthermore, since the introducer 10 includes the first information 51 that uses the inner diameter dimension of the sheath tube 21 as an index and the second information 52 that uses the outer diameter dimension of the sheath tube 21 as an index, the sheath with a reduced thickness is provided. The tube 21 has a clear relationship between the inner diameter and the outer diameter.

In this manner, a user such as a doctor or a nurse can determine whether the sheath tube 21 has a thin wall thickness during preparation or use as the introducer 10, and whether the sheath tube 21 has a thin wall thickness. It becomes possible to recognize the relationship between and the outer diameter. Thereby, the preparation work of the device to be inserted next can be proceeded smoothly and quickly, and the device size can be prevented from being mixed up.

The site | part which shows the 1st information 51 and the 2nd information 52 on the introducer 10 can be selected, and it is 1st information to each member (Dilator tube 31 and Dilator hub 32) with which the dilator 30 is provided. 51 or the second information 52 can be displayed, or the first information 51 or the second information 52 can be displayed on individual members (the connection tube 41 and the three-way cock main body 42) included in the three-way cock part 40. .

Here, as shown in the first combination in Table 1, the first information 51 is preferably shown on the dilator 30. This is because the inner diameter of the sheath tube 21 appears at a position near the insertion port 25a of the sheath hub 22, so that the maximum size of a device that can be inserted into the insertion port 25a can be easily recognized. In this case, the second information 52 is located at a position as far as possible from the side port 27 of the sheath hub 22, for example, the three-way cock main body 42 or the other end of the connection tube 41 (the end on the side to which the three-way cock main body 42 is connected). ) It is better to show up close.

In the second combination in Table 1, the first information 51 appears on the three-way stopcock portion 40 and the second information 52 appears on the dilator 30. In this case, the first information 51 may appear at a position as close as possible to the side port 27 of the sheath hub 22, for example, near one end of the connection tube 41 (an end portion on the side connected to the sheath hub 22).

When the first information 51 or the second information 52 appears on the connection tube 41, in addition to appearing directly on the connection tube 41, a flat chip like a nameplate is attached to a desired position of the connection tube 41, and this chip Alternatively, the first information 51 or the second information 52 may be displayed.

It should be noted that the first information 51 or the second information 52 may appear on an integrated part in which the two members of the dilator tube 31 and the dilator hub 32 are integrally formed. Further, the first information 51 or the second information 52 may be displayed on an integrated part in which two members of the connection tube 41 and the three-way cock body 42 are integrally formed.

The sheath tube 21 applied to the introducer 10 will be described with reference to FIGS. The applied sheath tube 21 includes a combination of first to

third sheath tubes

61, 62, 63 described below.

(A) As shown in FIG. 6A, the first sheath tube 61 has a wall thickness T1, an outer diameter dimension D1o, and an inner diameter dimension D1i. For example, a conventional sheath tube whose thickness is not thinned and a 5 Fr size sheath tube is taken as an example.

(B) As shown in FIG. 6B, the second sheath tube 62 has the same thickness T1 as the first sheath tube 61 and an outer diameter that is one step larger than that of the first sheath tube 61. Is set as D2o (D1o <D2o), and the inner diameter dimension is D2i. For example, it is a conventional sheath tube that is not thinned, and is a 6Fr size sheath tube.

(C) As shown in FIG. 6C, the third sheath tube 63 has a thickness T2 (T2 <T1) that is thinner than the first and

second sheath tubes

61 and 62, and an outer diameter of the third sheath tube 63. D3o (D1o <D3o <D2o), which is larger than the outer diameter D1o of the first sheath tube 61 and smaller than the outer diameter D2o of the second sheath tube 62, and the inner diameter of the first sheath tube 61 It is D3i (D1i <D3i ≦ D2i) which is larger than the dimension D1i and does not exceed the inner diameter dimension D2i of the second sheath tube 62. The third sheath tube 63 is a sheath tube 21 having a reduced thickness, and has an outer diameter that is the same as the conventional 5 Fr size sheath tube 21 and an inner diameter that is the same as the previous 6 Fr size sheath tube 21. And a 6 Fr size device can be inserted. According to the notation in this specification, the sheath tube 21 has a size of 6 in 5 Fr. Then, the first information 51 (that is, the information on the inner diameter) that appears when the third sheath tube 63 (6 in 5 Fr) is applied is displayed when the second sheath tube 62 (6 Fr) is applied. The second information 52 (that is, the information on the outer diameter) that appears when the third sheath tube 63 (6 in 5 Fr) is applied is the same as the first information 51 in the first sheath tube 61 ( This is the same as the second information 52 that appears when 5Fr) is applied.

Next, another aspect of the sheath tube 21 applied to the introducer 10 will be described with reference to FIGS. 7 (A), (B), and (C). The applied sheath tube 21 includes a combination of first to

third sheath tubes

71, 72, 73 described below.

(A) As shown in FIG. 7A, the first sheath tube 71 has a wall thickness of t1, an outer diameter dimension of d1o, and an inner diameter dimension of d1i. For example, a conventional sheath tube whose thickness is not thinned and a 5 Fr size sheath tube is taken as an example.

(B) As shown in FIG. 7B, the second sheath tube 72 has the same thickness t1 as the first sheath tube 71 and an outer diameter that is one step larger than that of the first sheath tube 71. Is set as d2o (d1o <d2o), and the inner diameter dimension is d2i. For example, it is a conventional sheath tube that is not thinned, and is a 6Fr size sheath tube.

(C) As shown in FIG. 7C, the third sheath tube 73 has a thickness t2 (t2 <t1) that is thinner than the first and

second sheath tubes

71 and 72, and an outer diameter of the third sheath tube 73. D3o (d3o <d1o <d2o), which is smaller than the outer diameter d1o of the first sheath tube 71 and inevitably smaller than the outer diameter d2o of the second sheath tube 72, and the inner diameter of the first sheath tube 71 It is d3i (d1i <d3i ≦ d2i) which is larger than the dimension d1i and does not exceed the inner diameter dimension d2i of the second sheath tube 72. The third sheath tube 73 is a sheath tube 21 having a reduced wall thickness, and has an outer diameter smaller than that of the conventional 5 Fr size sheath tube 21 and an inner diameter of the same as that of the conventional 6 Fr size sheath tube 21. Or less, and a 6 Fr size device can be inserted. According to the notation in this specification, the sheath tube 21 has a size of 6 in 5 Fr. Then, the first information 51 (that is, the information on the inner diameter dimension) that appears when the third sheath tube 73 (6 in 5 Fr) is applied is displayed when the second sheath tube 72 (6 Fr) is applied. The second information 52 (that is, the information on the outer diameter) that appears when the third sheath tube 73 (6 in 5 Fr) is applied is the same as the first information 51 in the first sheath tube 71 ( This is the same as the second information 52 that appears when 5Fr) is applied.

具体 Illustrative examples with color codes are shown in Tables 2 and 3 below. An example in which the first information 51 appears on the dilator hub 32 and the second information 52 appears on the three-way cock body 42 is shown in Table 2, the first information 51 appears on the three-way cock body 42, and the second information Table 3 shows an example in which 52 is shown on the dilator hub 32. In addition, you may show in the color which does not show the French size of this color code different from the illustrated color code.

In the combinations shown in Table 2, the same color code as that of the dilator hub 32 may appear on the dilator tube 31. Moreover, it does not need to be the same color and you may attach | subject the color which does not show Fr size of the sheath tube 21. FIG. The same color code as the three-way cock main body 42 may appear on the connection tube 41. Moreover, it does not need to be the same color and you may attach | subject the color which does not show Fr size of the sheath tube 21. FIG.

In the combinations shown in Table 3, the same color code as that of the dilator hub 32 may appear on the dilator tube 31. Moreover, it does not need to be the same color and you may attach | subject the color which does not show Fr size of the sheath tube 21. FIG. The same color code as the three-way cock main body 42 may appear on the connection tube 41. Moreover, it does not need to be the same color and you may attach | subject the color which does not show Fr size of the sheath tube 21. FIG.

As illustrated in Table 2 and Table 3, the first information 51 is the Fr size of the sheath tube 21 with the inner diameter dimension of the sheath tube 21 as an index, and the second information 52 is the outside of the sheath tube 21. In the case of the Fr size of the sheath tube 21 using the diameter dimension as an index, the first information 51 and the second information 52 are the same for a conventional sheath tube whose thickness is not reduced. On the other hand, in the case of the sheath tube 21 having a reduced wall thickness, the outer diameter can be reduced to, for example, 1 Fr size while keeping the inner diameter the same. Therefore, the first information 51 and the second information 52 are Come different. In other words, when the first information 51 and the second information 52 are the same (in this embodiment, when the dilator hub 32 and the three-way cock main body 42 are given the same color). The user can easily identify the introducer 10 having a conventional sheath tube whose thickness is not reduced. On the other hand, when the first information 51 and the second information 52 are different (in this embodiment, when the dilator hub 32 and the three-way cock main body 42 are colored differently), the user The introducer 10 including the sheath tube 21 with a reduced wall thickness can be easily identified.

The third sheath tube 63 shown in FIG. 6C is a sheath tube 21 that is thinner than the first and

second sheath tubes

61 and 62, and has an outer diameter D3o that is the first. It is equivalent to the sheath tube 61 and the inner diameter dimension D3i is equivalent to that of the second sheath tube 62, and a device of one size can be inserted while reducing the outer diameter size. With respect to the introducer 10 provided with such a sheath tube 21, the above-described effects can be achieved.

Further, the third sheath tube 73 shown in FIG. 7C is a sheath tube 21 that is thinner than the first and

second sheath tubes

71 and 72, and has an outer diameter d3o of the first. Since it is smaller than the first and

second sheath tubes

71 and 72, the outer diameter size can be reduced and inserted. When the inner diameter dimension d3i is a size between the inner diameter dimensions d1i and d2i of the first and

second sheath tubes

71 and 72, a device of one size can be inserted. With respect to the introducer 10 provided with such a sheath tube 21, the above-described effects can be achieved.

(Modification)
Although the embodiment has been described in which the first information 51 is configured by color and the second information 52 is also configured by color, the present invention is not limited to this case. The first information 51 may be composed of at least one of a color and a number, and the second information 52 may be composed of at least one of a color and a number. The combinations are as shown in Table 4 below.

Thus, the first and

second information

51 and 52 can be easily expressed using colors and numbers.

Note that the first and

second information

51 and 52 are not limited to being configured with colors and numbers. In addition to colors and numbers, letters may be used. Moreover, the 1st and

2nd information

51 and 52 can also be comprised by a shape. For example, the first and

second information

51 and 52 can be revealed by providing a necessary number of types of convex portions on the dilator hub 32 or the like. A convex shape having a square cross section indicates “5”, and a convex shape having a semicircular cross section indicates “1”. When one convex part shape having a square cross section is provided on the dilator hub 32 or the like and one convex part shape having a semicircular cross section is provided, the first information 51 or the second information is provided. “6” may be given to 52. When the information is expressed by the shape, the information can be recognized by tactile sense in addition to the visual sense.

This application is based on Japanese Patent Application No. 2012-72410 filed on March 27, 2012, the disclosure of which is referenced and incorporated as a whole.

10 Introducer,
20 Introducer sheath,
21 sheath tube,
22 sheath hub,
23 sheath support,
24 housing,
25 cap,
25a insertion slot,
26 Tab part,
26a hole,
30 Dilator,
31 Dilator tube,
32 Dilator Hub,
40 Three-way stopcock,
41 connection tube,
42 Three-way cock body,
51 1st information which uses the internal diameter dimension of the sheath tube 21 as a parameter | index,
52 Second information using the outer diameter of the sheath tube 21 as an index,
61 a first sheath tube;
62 second sheath tube,
63 third sheath tube,
71 first sheath tube;
72 second sheath tube,
73 Third sheath tube.

Claims

An introducer sheath comprising: a long hollow sheath tube; and a sheath hub provided on a proximal end side of the sheath tube and provided with an insertion port for inserting a dilator;
A dilator comprising: a dilator tube inserted through the sheath tube; and a dilator hub provided on a proximal end side of the dilator tube;
A three-way cock part comprising a connection tube having one end connected to the sheath hub, and a three-way cock body connected to the other end of the connection tube;
First information appearing in any one of the dilator and the three-way cock part, and using the inner diameter dimension of the sheath tube as an index,
Second information that appears on the other side of the dilator and the three-way cock part and uses the outer diameter of the sheath tube as an index,
Introducer with.
The first information or the second information displayed on the dilator is displayed on at least one of the dilator tube and the dilator hub,
The introducer according to claim 1, wherein the first information or the second information that appears in the three-way cock part appears in at least one of the connection tube and the three-way cock body.
The introducer according to claim 1 or 2, wherein the first information is represented in the dilator.
For the sheath tube to be applied,
(A) a first sheath tube having a wall thickness of T1 and an outer diameter of D1o;
(B) a second sheath tube having a thickness T1 that is the same as that of the first sheath tube and an outer diameter of D2o (D1o <D2o) that is set to be one step larger than the first sheath tube;
(C) The wall thickness is T2 (T2 <T1) thinner than the first and second sheath tubes, the outer diameter dimension is larger than the outer diameter dimension D1o of the first sheath tube, and the second D3o (D1o <D3o <D2o) smaller than the outer diameter D2o of the sheath tube, the inner diameter dimension is larger than the inner diameter dimension D1i of the first sheath tube, and the inner diameter dimension D2i of the second sheath tube A third sheath tube that does not exceed D3i (D1i <D3i ≦ D2i);
Including
The first information that appears when applying the third sheath tube is the same as the first information that appears when applying the second sheath tube;
The second information that appears when the third sheath tube is applied is the same as the second information that appears when the first sheath tube is applied. The introducer according to any one of the above.
For the sheath tube to be applied,
(A) a first sheath tube having a wall thickness of t1 and an outer diameter of d1o;
(B) a second sheath tube having a wall thickness t1 which is the same as that of the first sheath tube and an outer diameter of d2o (d1o <d2o) set as a size one step larger than that of the first sheath tube;
(C) d3o (d3o <d1o <d2o) whose thickness is thinner than the first and second sheath tubes t2 (t2 <t1) and whose outer diameter is smaller than the outer diameter d1o of the first sheath tube. ), A third sheath tube having an inner diameter dimension d3i (d1i <d3i ≦ d2i) which is larger than the inner diameter dimension d1i of the first sheath tube and does not exceed the inner diameter dimension d2i of the second sheath tube; Including
The first information that appears when applying the third sheath tube is the same as the first information that appears when applying the second sheath tube;
The second information that appears when the third sheath tube is applied is the same as the second information that appears when the first sheath tube is applied. The introducer according to any one of the above.
The first information includes at least one of a color and a number,
The introducer according to any one of claims 1 to 5, wherein the second information includes at least one of a color and a number.