JP2001299930A - Medical sheath device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical sheath device allowing a plurality of smooth medical actions and having a wide selectable range of sheath diameter. SOLUTION: This medical sheath device comprises a tubular main sheath 1 to be pierced into a blood vessel and a hollow cylindrical connecting member 2 for retaining the main sheath 1. A plurality of sub-sheathes 6A, 6B and 6C having ahemostatic housing 8 having a hemostatic valve 19 are arranged on one end surface of the connecting member 2 substantially orthogonally in holes 3A, 3B and 3C. A catheter 20, when inserted from each sub-sheathe 6A, 6B, 6C, can be smoothly inserted without any mutual collision.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a medical sheath device for introducing a catheter or the like into a blood vessel, and more particularly to a medical sheath device capable of inserting a plurality of catheters.

[0002]

At present, it is a frequent medical practice to insert a medical device such as a catheter into a blood vessel such as a vein, inject a medical solution, or to collect a body fluid such as blood. Is being done. In such a case,
For example, when inserting a catheter, when the position of the blood vessel is confirmed by puncturing the blood vessel with an injection needle and a syringe, the syringe is removed from the injection needle, a guide wire or the like is inserted, the injection needle is withdrawn, and the sheath is connected to the guide wire. Into the blood vessel, and insert the catheter from the hemostatic valve side of the sheath.

However, in modern advanced medical practice, it has become necessary to insert a plurality of catheters almost simultaneously, or to simultaneously insert a catheter and inject a drug solution. In such a case, conventionally, a plurality of sheaths are inserted at the same time and each medical action is performed from each sheath, so that the burden on the patient is increased. In addition, it may be difficult to insert the sheath at a plurality of places depending on the affected part. Therefore, a sheath that can simultaneously perform a plurality of medical procedures at one puncture site has been desired.

Therefore, as a sheath into which such a plurality of catheters can be inserted, a tubular connector made of a hard resin such as polycarbonate, which is inclined at an end of the sheath portion with respect to the connection portion, and integrally formed. Provided with a hemostasis valve having a side port or the like in each branch pipe. However, in this conventional sheath, the branch pipes are formed to be inclined in different directions, and these branch pipes are integrally formed with a hard resin connector. When the catheters are inserted simultaneously, the catheters tend to collide with each other at the junction. As a countermeasure, the diameter of the sheath portion is increased to increase the gap between the catheter and the inner diameter of the sheath. For this reason, the sheath diameter must be increased to some extent, and the burden on the patient increases. There was a problem that it could not be applied depending on the affected area. In addition, since the branch pipe is made of a hard resin and is integral with the connector, there is also a problem that the entire connector vibrates due to insertion and removal of the catheter, giving a sense of resistance.

[0005] The present invention has been made in view of such a problem, and can perform a plurality of medical procedures smoothly.
It is an object of the present invention to provide a medical sheath device having a large selection range of a sheath diameter.

[0006]

According to a first aspect of the present invention, there is provided a medical sheath device comprising: a main sheath pierced into a blood vessel in a tubular shape; and a hollow cylindrical connecting member holding the main sheath. And a plurality of sub-sheaths provided with a hemostatic housing having a hemostatic valve on one end surface of the connecting member. By adopting such a configuration, a medical device or the like can be introduced into the main sheath by inserting a medical device or the like such as a catheter or a dilator from the hemostatic valve side of each of the plurality of sub-sheaths. For this reason, a plurality of medical tools and the like can be inserted simultaneously at one puncture site. At this time, since each sub-sheath is provided substantially orthogonal to one end surface of the connection member, a medical device or the like can be smoothly introduced from the connection member to the main sheath, and the diameter of the main sheath can be reduced. Can be made thinner. Thus, the burden on the patient can be reduced.

A medical sheath device according to a second aspect of the present invention includes a main sheath pierced into a blood vessel in a tubular shape,
A hemostatic valve having a hollow cylindrical connection member holding the main sheath, having a plurality of openings formed in one end surface of the connection member and having an insertion hole corresponding to the opening in the connection member. Have By adopting such a configuration, a medical device or the like can be introduced into the main sheath by inserting a medical device or the like such as a catheter or a dilator through a plurality of openings.
Therefore, a plurality of catheters can be simultaneously inserted at one puncture site. At this time, since a medical device such as a catheter is inserted in the same direction from the opening on the one end surface side of the connection member, the medical device can be smoothly introduced from the connection member to the main sheath. The diameter can be reduced. Thus, the burden on the patient can be reduced.

Further, in the medical sheath device according to a third aspect, in the first or second aspect, the hemostatic valve is constituted by a plurality of valve members made of silicone rubber. For this reason, the impact, the entanglement, etc. when inserting a medical device etc. are suppressed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a medical sheath device according to a first embodiment of the present invention will be described in detail with reference to FIGS.

FIGS. 1 to 4 show a medical sheath device according to the present embodiment.
It has a main sheath 1 and a hollow cylindrical connecting member 2 of the main sheath 1. As shown in FIG.
As shown in FIG. 2B, three holes 3A, 3B and 3C corresponding to the outer diameter of the sub-sheath described later are formed, and the main sheath 1 is formed on the other end surface as shown in FIG. 2C. One projecting hole 4 is formed. The main sheath 1 and the connecting member 2 are elastically joined by a joining member 5 made of silicon rubber. Also, 6, 6A, 6
B is a sub-sheath, and the sub-sheaths 6, 6A, 6B
Each comprises a sheath portion 7, a hemostatic housing 8, and a side port 9 attached to the hemostatic housing 8. The hemostatic housing 8 is provided with a branch tube 11A as shown in FIG.
A cap 12 having a hole 13 formed at one end of a cylindrical branch housing 11 having a protruding side, and a tubular connecting member at the other end.
Each of the branch housings 11 has a hemostatic valve 19 including a disc-shaped first valve body 14 and a second valve body 16. In the hemostasis valve 19,
The first valve body 14 is made of silicone rubber and has a circular opening 15 smaller than the diameter of an insertion target such as a catheter. on the other hand,
The second valve body 16 is made of silicone rubber, and has a thin vertical groove 17 formed on one side surface at a depth of 1/2 or more of the thickness of the valve body and not penetrating, and a similar thin horizontal groove 18 formed on the other side surface. By doing
Only the intersection S of the vertical groove 17 and the horizontal groove 18 penetrates. Also,
A connector 20 is attached to the other end of the branch housing 11. The side port 9 is attached to the branch pipe 11A, and the sheath 7 is attached to the connector 20. The sheath 7 is connected to the holes 3A, 3
B, 3C.

The operation of the above configuration will be described. This medical sheath device can be used to secure a blood vessel by the Schlenger method when a catheter is inserted into a transvascular blood vessel. First, the preparatory step will be described. When a blood vessel is punctured with a syringe needle and a syringe and the position of the blood vessel is confirmed, the syringe is removed from the syringe needle and a guide wire (not shown) is quickly inserted. After that, when you remove the injection needle,
A sheath dilator (not shown) is integrally attached to the main sheath 1 and pushed into a blood vessel along a guide wire. Subsequently, when the dilator is extracted, it is confirmed that no blood leaks from the hemostatic valve 19 of each of the sub-sheaths 6A, 6B, 6C. At this time, the blood travels backward from the main sheath 1 to reach the hemostatic housing 8, but the other end of the hemostatic valve 19 is a second valve body 16.
Since only the intersection S between the vertical groove 17 and the horizontal groove 18 penetrates through the valve body 16, no blood leaks.

When the catheter 20 is inserted through the hole 13 of each of the sub-sheaths 6A, 6B, 6C, for example, as shown in FIG.
It passes through 14 openings 15. At this time, since the first valve element 14 is made of silicone rubber and the opening 15 is smaller than the diameter of the catheter 20, the peripheral edge of the opening 15 comes into close contact with the catheter 20. Subsequently, the catheter 20 is connected to the second valve body 16.
, And contacts the intersection S and presses it. Then, the intersection S is pushed open by the elasticity of the silicone rubber.
At this time, since the second valve body 16 is strongly in close contact with the catheter 20, blood or the like does not leak, and the function as a hemostatic valve is favorably exhibited. Then, the catheter 20 further enters the main sheath 7 through the connecting member 2 from the sheath portion 7.
And will eventually be placed in a blood vessel. During this time, air may accumulate in the hemostasis valve 19, so that it can be appropriately extracted from the side port 9. The side port 9 can also be used for injecting a physiological saline solution, collecting blood, and the like. Such insertion of the catheter 20 can be performed by each of the sub-sheaths 6A, 6B, and 6C. At this time, the three sub-sheaths 6A, 6B, and 6C are formed so as to be substantially perpendicular to one end surface of the connection member 2. Are connected at the holes 3A, 3B, and 3C, the respective catheters 20 inserted from the respective sub-sheaths 6A, 6B, and 6C travel in the connecting member 2 toward the main sheath 1 with substantially the same directionality. Therefore, the inserted catheters 20 do not collide with each other and do not hinder the approach thereof. The removal of the catheter 20 can be performed by the reverse movement described above.

As described in detail above, the medical sheath device of the present embodiment has the main sheath 1 which is tubular and punctures into the blood vessel, and the hollow cylindrical connecting member 2 which holds the main sheath 1. The hemostatic valve 19 is provided on one end face of the connection member 2.
Sub-sheaths 6 with a hemostatic housing 8 having
A, 6B, 6C are provided in the holes 3A, 3B, 3C in a substantially orthogonal direction, so that each sub-sheath 6A, 6B, 6C
Even if the catheter 20 is inserted from C, it can be inserted smoothly without collision. Also,
Since the respective catheters 20 do not collide with each other, the diameter of the main sheath 1 can be made thinner than in the past, and the range of choice is wide. As a result, a plurality of catheters 20 can be inserted from one puncture site, and the sheath device has a reduced burden on the patient. In particular, since the hemostatic valve 19 is composed of the first valve element 14 and the second valve element 16 made of silicone rubber, it is possible to absorb the vibration and shock of the device when the catheter 20 is inserted. . Furthermore, as an effect on the embodiment,
Since the joining portion between the main sheath 1 and the connecting member 2 is a joining member 5 made of silicone resin, even if the catheters 20 come into contact with each other, the impact can be absorbed by the joining member 5 and the catheters 20 come into contact with each other. The catheter 20 can be loosened.

Next, a medical sheath device according to a second embodiment of the present invention will be described in detail with reference to FIGS. The medical sheath device of the second embodiment basically has the configuration of the first embodiment described above housed in a single hemostatic housing, and does not require connection with a sub-sheath.

5 to 8, the medical sheath device comprises a tubular main sheath 21 and a main sheath 21.
21 and a hollow cylindrical hemostatic housing 22 as a connecting member. As shown in FIG. 6, a cap 24 having three openings 23A, 23B, and 23C for inserting a catheter is attached to one end surface of the hemostatic housing 22, and a main body made of silicon rubber is attached to the other end surface. A joining tube 25 as a joining member of the sheath 21 is provided. In addition, this hemostatic housing 22
A branch pipe 26 is formed on the side surface of the, and a side port 27 is attached thereto. Meanwhile, hemostatic housing
6, fixed plates 28 and 28A each having an opening 28B corresponding to the cap 24, as shown in FIG.
A hemostatic valve 31 including a first valve body 29 and a second valve body 30 in a disk shape interposed therebetween is provided. First valve body
Numeral 29 is made of silicone rubber, and as shown in FIG.
A, 32B and 32C. In addition, the second valve body 30 is configured as shown in FIG.
As shown in the figure, narrow vertical grooves 33A, 33B, and 33C are formed on one side and narrow horizontal grooves 34A, 34B, and 34C are formed on the other side, and only the intersections 35A, 35B, and 35C of the vertical grooves and the horizontal grooves that are insertion holes penetrate. ing. Then, the openings 32A, 32B of the first valve body 29,
The hemostatic housing with the intersections of 32C, the intersections 35A, 35B, 35C of the second valve body 30 and the openings of the fixing plates 28, 28A matched with the openings 23A, 23B, 23C of the cap 24, respectively.
Inserted and fixed in 22.

The operation of the above configuration will be described. First, in the preparation stage, the blood vessel is punctured with a syringe needle and a syringe, and after confirming the position of the blood vessel, the syringe is removed from the syringe needle and a guide wire (not shown) is quickly inserted. After that, when the injection needle is removed, the main body 1 is pushed into the blood vessel along the guide wire while the sheath dilator (not shown) is integrally attached to the main sheath 1. Subsequently, when the dilator is extracted, it is confirmed that there is no blood leak from the hemostatic valve 31. At this time, the blood flows backward from the main sheath 21 to reach the hemostatic housing 22, but the other end of the hemostatic valve 31 is a second valve 30.
Penetrates only at the intersections 35A, 35B and 35C of the vertical and horizontal grooves, so that no blood leaks.

Then, as shown in FIG.
When the catheter 36 is inserted through the openings 23A, 23B, and 23C formed on one end of the 22, for example, the catheter 36 passes through the opening 32C of the first valve body 29 in the opening 23C. At this time, since the first valve body 29 is made of silicone rubber and the opening 32C is smaller than the diameter of the catheter 36,
The periphery of the opening 32C closely fits the catheter 36. Subsequently, the catheter 36 reaches the second valve body 30 and contacts and presses the intersection 35C. Then, the intersection 35C is pushed open by the elasticity of the silicone rubber. At this time, since the second valve body 30 is strongly in close contact with the catheter 36, blood and the like do not leak, and the function as a hemostatic valve is favorably exhibited. The catheter 36 will then advance further and will be placed through the main sheath 21 and ultimately into the blood vessel. During this time, air may accumulate in the hemostatic valve 31, so that the air can be appropriately extracted from the side port 27. The side port 27 can also be used for injecting physiological saline and collecting blood. Such insertion of the catheter 36 can be performed at the openings 23A, 23B, and 23C. At this time, the catheter 36 inserted from each of the openings 23A, 23B and 23C passes through the main sheath inside the hemostatic housing 22.
Since they proceed in almost the same direction toward 21, the inserted catheters 36 do not collide with each other and do not hinder their approach. It should be noted that the removal of the catheter 36 can be performed by the reverse movement described above.

As described in detail above, the medical sheath device of the second embodiment comprises a tubular main sheath 21 pierced into a blood vessel and a hollow tubular hemostatic housing 22 holding the main sheath 31. A first one having a plurality of openings 23A, 23B, and 23C formed on one end surface of the hemostatic housing 22 and having openings 32A, 32B, and 32C corresponding to the openings 23A, 23B, and 23C in the hemostatic housing 22; Valve body 29
And the second valve body 29 having the intersections 35A, 35B, and 35C, so that even if the catheter 36 is inserted through the openings 23A, 23B, and 23C, the catheters 36 can be smoothly crushed without collision. Can be inserted. Further, since the respective catheters 36 do not collide with each other, the diameter of the main sheath 1 can be made smaller than in the conventional case, and the range of choices is wide. In addition, although the diameter of the hemostatic housing 22 is slightly increased, it can be used without a sense of incongruity because it has substantially the same shape as the hemostatic valve in a normal single-type sheath device. With these, a plurality of catheters 36 can be inserted from one puncture site,
The sheath device reduces the burden on the patient. Particularly as an effect on the embodiment, since the joining tube 25 between the main sheath 21 and the hemostatic housing 22 is made of silicone resin,
Even if the catheters 36 come into contact with each other, the impact
It can be absorbed at 25 and these contacted catheters 36 can be loosened.

Although the present invention has been described based on the first and second embodiments, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in each of the embodiments described above, the type in which two catheters can be inserted has been described. However, the present invention is not limited to this.
In the second embodiment, the number of openings formed on one end surface of the hemostatic housing 22 can be appropriately increased or decreased in the range of 2 to 5. In these cases, the size of the connection member 2 or the hemostatic housing 22 can be appropriately changed according to the number.
Furthermore, in each of the above embodiments, the case of inserting a catheter has been described. However, the present invention is not limited to this, and the present invention is also applicable to the administration of a stent, a sheath dilator, and various drugs.

[0020]

According to a first aspect of the present invention, there is provided a medical sheath device having a tubular-shaped main sheath pierced into a blood vessel, and a hollow cylindrical connecting member for holding the main sheath. Since a plurality of sub-sheaths provided with a hemostatic housing having a hemostatic valve on one end surface of the connection member are provided in a substantially orthogonal direction, medical devices such as a plurality of catheters can be simultaneously and smoothly performed at one puncture site. Can be inserted. Further, the diameter of the main sheath can be reduced. Thus, a medical sheath device with a reduced burden on the patient can be provided.

A medical sheath device according to a second aspect of the present invention includes a main sheath pierced into a blood vessel in a tubular shape,
A hemostatic valve having a hollow cylindrical connection member holding the main sheath, having a plurality of openings formed in one end surface of the connection member and having an insertion hole corresponding to the opening in the connection member. Therefore, a plurality of medical devices such as catheters can be simultaneously and smoothly inserted into one puncture site. Further, the diameter of the main sheath can be reduced. Thus, a medical sheath device with a reduced burden on the patient can be provided. In particular, claim 1
It has a simpler structure than the one.

Further, in the medical sheath device according to the third aspect, the hemostatic valve according to the first or second aspect is constituted by a plurality of silicone rubber valve bodies.
Vibration of the device when a medical device or the like is inserted is suppressed.

[Brief description of the drawings]

FIG. 1 is a front view showing a medical sheath device according to a first embodiment of the present invention.

2 (a) is a front view, FIG. 2 (b) is a left side view, and FIG. 2 (c) is a right side view.

FIG. 3 is an exploded view showing the hemostatic housing.

FIG. 4 is a sectional view showing an inserted state of the catheter.

FIG. 5 is a front view showing a medical sheath device according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing an inserted state of the catheter.

FIG. 7 is a plan view showing a first valve body.

FIG. 8 is a plan view showing a second valve body.

[Explanation of symbols]

 1,21 Main sheath 2 Connection member 6A, 6B, 6C Sub-sheath 8,22 Hemostasis housing 14,29 First valve body (Hemostatic valve) 16,30 Second valve body (Hemostatic valve) 19,31 Hemostasis valve 22 Hemostasis Housing (connecting member) 23A, 23B, 23C Opening 32A, 32B, 32C Opening (insertion hole) 35A, 35B, 35C Intersection (insertion hole)

Claims (3)

[Claims] 1. A hemostatic housing having a tubular main sheath pierced into a blood vessel, a hollow cylindrical connecting member for holding the main sheath, and a hemostatic valve on one end surface of the connecting member. A plurality of sub-sheaths provided in a substantially orthogonal direction. 2. A tube-shaped main sheath pierced into a blood vessel, and a hollow cylindrical connecting member for holding the main sheath, wherein a plurality of openings are formed on one end surface of the connecting member. A medical sheath device comprising a hemostatic valve having an insertion hole corresponding to the opening in the connection member. 3. The valve according to claim 1, wherein the hemostatic valve comprises a plurality of silicone rubber valve bodies.
Or the medical sheath device according to 2.