WO2014050766A1

WO2014050766A1 - Medical tool and medical system

Info

Publication number: WO2014050766A1
Application number: PCT/JP2013/075571
Authority: WO
Inventors: 克彦清水; 周平三枝
Original assignee: テルモ株式会社
Priority date: 2012-09-28
Filing date: 2013-09-20
Publication date: 2014-04-03
Also published as: JP2015231397A

Abstract

[Problem] To provide: a medical tool which makes it possible to prevent the adhesion of a biological induction material, e.g., a drug, onto a long member, e.g., a catheter, during the introduction of the biological introduction material into a living body so that the biological introduction material can be introduced into the living body laconically; and a medical system. [Solution] A medical tool (10) comprises: a long member (20) equipped with a lumen (21) that extends from a tip side toward a base end side; and a cut section (30) provided on the long member. In the cut section, a packaging material to be introduced into the lumen of the long member is notched so as to leak a biological introduction material enclosed in the packaging material.

Description

Medical instrument and medical system

The present invention relates to a medical instrument and a medical system.

Long medical devices such as catheters are widely used as medical devices for delivering biological introduction materials such as drugs into the living body. Generally, a catheter is provided with a lumen through which a drug can flow and a discharge hole for discharging the drug from the lumen (see, for example, Patent Document 1).

Conventionally, when a drug is administered using a catheter, a predetermined amount of drug is filled into the lumen of the catheter, and then a member such as a pusher is used to flow gas or physiological saline into the lumen. There was a work to push drugs.

JP 2010-125229 A

In the administration method as described above, since the medicine filled in the lumen adheres to the inner wall of the lumen, there is a problem that the whole amount of the filled medicine cannot be discharged into the living body. In particular, when the drug is a powder, the amount of adhesion to the inner wall of the lumen tends to increase, and the dead volume of the drug that cannot be discharged from the catheter tends to increase. In addition to this, if a method of flowing gas or physiological saline into the lumen is employed, the gas or physiological saline is mixed with the drug while the drug moves through the lumen, so the drug has a reduced concentration. There is also a problem that is introduced into the living body.

The present invention has been invented in order to solve the above-mentioned problems, and prevents a biological introduction material from adhering to a long member such as a catheter when a biological introduction material such as a drug is introduced into the living body. An object of the present invention is to provide a medical instrument and a medical system that can introduce a living body introduction material into a living body without waste.

(1) While a packaging material enclosing a long member having a lumen extending from the distal end side to the proximal end side and a living body introduction material introduced into the living body through the long member passes through the lumen A medical device comprising: an opening for opening the packaging material.

(2) The opening portion is provided in the elongated member, and leaks the living body introduction material to at least a part of the packaging material as the packaging material passes through the lumen. It has a cutting part which forms a cut, The medical instrument given in the above (1) characterized by things.

(3) The opening part is provided in the long member, and has an opening part that opens the valve body by contacting a valve body that is provided in the packaging material and seals the packaging material. The medical device according to (1) above, wherein

(4) In the above (1), the opening portion is connected to an opening provided in the packaging material and has a string for opening the opening in a closed state. The medical device described.

(5) The long member further includes a holding portion for holding the opened packaging material on the long member, according to any one of the above (1) to (4), Medical instruments.

(6) The medical device according to (5), wherein the holding portion includes a mesh material for holding the packaging material in the lumen.

(7) In the above (5) or (6), the holding portion includes a hook portion that holds the packaging material when the opened packaging material passes through the lumen. The medical device described.

(8) The packaging material includes a first diameter portion having a first diameter, and a second diameter portion that is formed on the tip side of the first diameter portion and has a smaller diameter than the first diameter portion. And an intermediate portion connected to the first diameter portion and the second diameter portion, and the holding portion is held by the intermediate portion abutting when the packaging material passes through the lumen. The medical device according to any one of the above (5) to (7), wherein the medical device has an abutting portion.

(9) The above (1) to (8), further comprising a string attached to the packaging material and led out from a proximal end side of the long member when the packaging material is introduced into the lumen. ) A medical device according to any one of the above.

(10) The guide member may further include a guide member that is disposed in the lumen of the elongate member and guides the movement of the packaging material so that the packaging material moves along the axial direction in the lumen. (1) The medical device according to any one of (9).

(11) The packaging material according to any one of (1) to (10) above, wherein a part of the packaging material has an opening assisting part configured to be opened more easily than other parts of the packaging material. The medical device as described in any one.

(12) The medical device according to any one of (1) to (11) above, and a fluid supply unit that supplies a fluid for moving the packaging material in the lumen to the elongated member. A medical system comprising:

According to the medical instrument described in the above (1), the living body introduction material is moved in the lumen of the long member while the living body introduction material such as a medicine is enclosed in the packaging material, and the living body introduction material enters the living body. The packaging material can be opened before being introduced. For this reason, it is possible to prevent the living body introduction material from adhering to the inner wall of the lumen, and to introduce the living body introduction material into the living body without waste.

According to the medical instrument described in the above (2), since the packaging material can be opened by a simple operation of moving the packaging material in the lumen of the long member, the usability of the medical instrument can be improved. .

According to the medical instrument described in the above (3), since the packaging material can be opened without forming a cut in the packaging material, it is possible to prevent the scattering of the packaging material before it occurs. It is possible to more suitably prevent the packaging material from being introduced into the body.

According to the medical instrument described in the above (4), since the packaging material can be opened without forming a cut in the packaging material, it is possible to prevent the scattering of the packaging material before it occurs. It is possible to more suitably prevent the packaging material from being introduced into the body.

According to the medical instrument described in (5) above, since the opened packaging material can be held by the long member, the packaging material can be prevented from being introduced into the living body.

According to the medical instrument as described in said (6), since a packaging material can be hold | maintained with the mesh material for a holding | maintenance with which a holding | maintenance part is equipped, it can prevent suitably that a packaging material is introduce | transduced into a biological body. it can.

According to the medical instrument described in the above (7), since the packaging material can be held in the hook portion provided in the holding portion, the packaging material can be suitably prevented from being introduced into the living body.

According to the medical instrument described in the above (8), the packaging material can be held by the long member by abutting the intermediate portion of the packaging material against the abutting portion provided in the holding portion. It can prevent suitably being introduced into the body.

According to the medical instrument described in the above (9), the packaging material can be prevented from being introduced into the living body by the string attached to the packaging material. Further, the packaging material can be easily collected using the string.

According to the medical instrument described in the above (10), since the packaging material can be moved along the axial direction of the long member, the opened packaging material can be prevented from scattering, and the packaging material. Can be suitably prevented from being introduced into the living body.

According to the medical instrument described in (11) above, since the packaging material can be easily opened, the living body introduction material can be reliably removed from the packaging material.

According to the medical system described in (12) above, it is possible to provide a medical system capable of smoothly moving the packaging material in the lumen of the long member provided in the medical instrument.

It is a figure which simplifies and shows the medical instrument and medical system which concern on 1st Embodiment of this invention. FIG. 2 is a diagram for explaining the configuration of the medical device according to the first embodiment. FIG. 2A is a partial cross-sectional view of the distal end side of the long member provided in the medical device, and FIG. ) Is a plan view of a holding part provided in the medical instrument, and FIG. 2C is a plan view of a cutting part provided in the medical instrument. It is a figure for demonstrating the packaging material which concerns on embodiment, Comprising: FIG. 3 (A) is a top view of a packaging material, FIG.3 (B) is sectional drawing of a packaging material. It is a top view which shows the modification of the mesh material for holding | maintenance with which a medical device is equipped. FIG. 5 is a diagram for explaining the operation of the medical device according to the first embodiment, and FIG. 5A is a partial cross-sectional view showing a state before the packaging material passes through the cutting portion of the medical device. FIG. 5 (B) is a partial cross-sectional view showing a state in which the packaging material is held in the holding part of the medical device. FIG. 6 is a view for explaining Modification Example 1 of the medical device according to the first embodiment, and FIG. 6 (A) is a partial cross-sectional view showing a state before a cut is formed in the packaging material. FIG. 6B is a partial cross-sectional view showing a state in which the packaging material is held in the hook portion provided in the long member. 7 is a view for explaining modified examples 2 to 4 of the medical instrument according to the first embodiment, and FIG. 7A is a partial sectional view for explaining the medical instrument according to the modified example 2. FIG. 7B is a partial cross-sectional view for explaining the medical instrument according to the third modification, and FIG. 7C is a partial cross-sectional view for explaining the medical instrument according to the fourth modification. It is. FIG. 8 is a view for explaining a modified example 5 of the medical instrument according to the first embodiment, and FIG. 8A is a part showing a state before the packaging material passes through the cutting part of the medical instrument. FIG. 8B is a partial cross-sectional view showing a state in which the packaging material is held in the holding part of the medical device. 9A and 9B are partial cross-sectional views for explaining a medical device according to the second embodiment of the present invention. FIG. 10 is a view for explaining a modified example of the medical instrument according to the second embodiment, and FIG. 10 (A) is a partial sectional view showing a state before the packaging material is opened, FIG. B) is a partial cross-sectional view showing a state after the packaging material is opened.

Hereinafter, the present invention will be described based on embodiments with reference to the drawings.

<First Embodiment>
1 to 4 are diagrams for explaining each configuration of the medical instrument and the medical system according to the first embodiment of the present invention, and FIG. 5 is an explanation of the operation of the medical instrument and the medical system according to the first embodiment. FIG. 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.

With reference to FIGS. 1 to 3, the medical device 10 according to the present embodiment will be briefly described. The long member 20 includes a lumen 21 extending from the distal end side to the proximal end side, and the long member 20 is interposed therebetween. The packaging material 50 enclosing the living body introduction material 60 introduced into the living body has an opening portion 30 that opens the packaging material 50 while passing through the lumen 21. The unsealing part 30 is provided in the long member 20, and a cut for leaking the biological introduction material 60 to at least a part of the packaging material 50 as the packaging material 50 passes through the lumen 21. It is comprised by the cutting part to form (refer FIG. 5 (A), (B)).

In the description, the distal end side (left side in FIG. 1) from which the long member 20 is extended is referred to as the distal end side of the medical device 10, and the opposite side is referred to as the proximal end side (right side in FIG. 1). Called. Moreover, an axial direction means the direction where the elongate member 20 was extended | stretched, ie, the left-right direction of FIG.

The medical instrument 10 can be used together with a fluid supply unit 60 for supplying a fluid for moving the packaging material 50 in the lumen 21 to the elongate member 20, and the medical system includes the medical instrument 10 and the fluid supply unit 60. 100 can be built.

Examples of the biological introduction material 70 introduced into the living body using the medical instrument 10 include, but are not limited to, drugs, and are intended for introduction into the living body such as various cells, blood, and metabolites. It can be appropriately selected from the products to be performed. The packaging material 50 is introduced into the lumen 21 of the long member 20 in a state where the living body introduction material 70 is enclosed. As will be described later, at the time of passing through the lumen 21, at least a part is cut by the long member 20, thereby leaking the biological introduction material 70 enclosed therein.

The long member 20 can be constituted by a catheter known in the medical field. An opening 22 communicating with the lumen 21 is formed at the distal end of the long member 20, and the living body introduction material 70 can be discharged from the opening 22. A connector 23 to which a tube 61 for connecting the fluid supply unit 60 and the long member 20 can be connected is provided at the base end of the long member 20. For this connector 23, for example, a mechanical connector capable of connecting the tube 61 by fitting or screwing can be used.

The material constituting the long member 20 is not particularly limited. For example, polyvinyl chloride, polyethylene, polypropylene, cyclic polyolefin, polystyrene, poly (4-methylpentene-1), polycarbonate, acrylic resin, polyethylene terephthalate, Various soft or hard resins such as polyester such as polyethylene naphthalate, butadiene-styrene copolymer, polyamide (for example, nylon 6, nylon 6,6, nylon 6,10, nylon 12) can be used.

As the fluid supply unit 60, one capable of pumping various fluids into the lumen 21 of the long member 20 can be used. For example, a known fluid pump or the like can be used. Moreover, gas and liquid can be used as the fluid supplied from the fluid supply part 60, for example, air, physiological saline, etc. can be used.

As the tube 61 that connects the long member 20 and the fluid supply unit 60, a tube that can circulate fluid and can connect the fluid supply unit 60 and the long member 20 in a liquid-tight and air-tight manner. Can be used. For example, a known resin tube having flexibility can be used for the tube 61. As the fluid supply unit 60, for example, a syringe pump known in the medical field can be used. When using a syringe pump, the connector 23 of the long member 20 and the syringe pump may be directly connected without using the tube 61.

Referring to FIGS. 2A and 2B, the cutting portion 30 provided in the long member 20 includes, for example, a blade 31 configured to easily cut the packaging material 50 and the blade 31 attached thereto. The frame member 32 may be provided. The blade 31 can be made of metal or the like. Further, the blade surface can be provided by sharpening the tip of the blade 31. For example, as shown in the figure, four blades 31 can be installed at equal positions in the circumferential direction.

The frame member 32 is provided to fix the blade 31 to the long member 20. The frame member 32 can be fixed to the long member 20 by adhesion or fusion, for example. In the medical instrument 10, the cutting part 30 is disposed in the lumen 21 of the long member 20.

2 (A) and 2 (C), the long member 20 can be provided with a holding portion 40 for holding the packaging material 50 in which the cut is formed on the long member 20. The holding part 40 can be constituted by, for example, a holding mesh material 41 arranged on the distal end side with respect to the cutting part 30. As shown in FIGS. 5A and 5B, after the packaging material 50 passes through the lumen 21 and a cut is formed in the packaging material 50 by the cutting portion 30, the packaging material 50 is disposed on the tip side from the cutting portion 30. The packaging material 50 is held in the holding mesh material 41.

As shown in FIG. 2C, the holding mesh material 41 has a mesh with a roughness that can hold the packaging material 50, and the holding mesh material 41 is provided in the same manner as the cutting portion 30. A frame member 42 for fixing to the long member 20 is provided. The frame member 42 can be fixed to the long member 20 by adhesion or fusion, for example.

The material constituting the holding mesh material 41 is not particularly limited, and a metal or a hard resin material can be used. Further, the holding mesh material is not limited to a configuration having a grid-like mesh, and for example, even if it has a configuration in which a plurality of round holes are formed as in the mesh material 43 shown in FIG. Good. In the case of using the

holding mesh materials

41 and 43 having either the lattice shape or the round hole shape, the function of holding the packaging material 50 can be provided.

3A and 3B, the packaging material 50 has a bag structure in which the biological introduction material 70 can be enclosed. The packaging material 50 should just be provided so that the inside of the lumen | rumen 21 of the elongate member 20 can be passed, and the external shape and volume are not specifically limited. Examples of the material constituting the packaging material 50 include polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers, polyesters such as polyethylene terephthalate, polyvinyl chloride, ethylene-vinyl acetate copolymers, and crosslinked ethylene-vinyl acetate. Examples thereof include resin materials such as copolymers, thermoplastic resins such as polyurethane, polyamide elastomer, silicone rubber, and latex rubber.

The packaging material 50 can be provided with an opening assisting portion 51 configured to be easier to open than other parts of the packaging material 50 in a part of the packaging material 50. The opening assisting part 51 can be formed, for example, by using a material in which a cut is more easily formed than other parts, by making the wall thickness thinner than other parts, or by making a small cut in advance. . In the illustrated packaging material 50, a plurality of opening assisting portions 51 are formed by previously making small cuts at a plurality of locations of the packaging material 50.

As described above, the living body introduction material 70 sealed in the packaging material 50 is not particularly limited as long as it is intended for introduction into the living body, but in this embodiment, a thrombolytic drug (alteplase, monteplase, etc.) is used. It is used as the living body introduction material 70. In addition, examples of drugs used as the biointroducing material 70 include anticoagulants (heparin, enoxaparin, etc.), antineoplastic drugs (sorafenib, cisplatin, etc.), drugs that act on inflammation and allergy (mometasone furanate, dexamethasone) Pesyl esters, etc.), drugs that act on the respiratory system (salmeterol, tiotropium), drugs that act on the nervous system (olanzapine, donepezil hydrochloride, etc.) can also be used, and the state when encapsulated There is also no particular limitation, and it may be granular, powdery, gelled, liquid or the like. There is no particular limitation as long as the part into which the living body introduction material 70 is introduced is in the living body, and an otoscope, a respiratory region, various body tubes and blood vessels can be selected as the application target.

For example, it is possible to supply a medicine to the brain through the outer nose using the medical device 10. Since the elongate member 20 provided in the medical device 10 enables the drug to be delivered to the inside of the nasal cavity, the drug can be directly delivered to the brain via the nervous system existing in the vicinity of the nasal cavity. Compared with the case where a drug is administered transvascularly to the brain as in the prior art, the efficacy of the drug can be made to act more effectively.

Next, the operation of the medical instrument 10 according to this embodiment will be described.

As shown in FIG. 5A, a packaging material 50 in which a living body introduction material 70 is sealed is filled into the lumen 21 of the long member 20. Next, the fluid supply unit 60 is operated to feed a fluid for moving the packaging material 50 into the lumen 21. The packaging material 50 moves in the lumen 21 by the fluid and comes into contact with the cutting part 30 disposed in the lumen 21. A cut is formed in the packaging material 50 with the contact with the cutting part 30.

When the fluid continues to be fed, the packaging material 50 is pressed against the holding portion 40 disposed on the front end side with respect to the cutting portion 30. At this time, the living body introduction material 70 enclosed in the packaging material 50 leaks from the packaging material 50 and is discharged from the opening 22 of the long member 20. Since the packaging material 50 is held by the holding unit 40, the packaging material 50 is prevented from being discharged from the opening 22 of the long member 20 into the living body.

As described above, according to the medical instrument 10 according to the present embodiment, the living body introduction material 70 is moved in the lumen 21 of the elongate member 20 while the living body introduction material 70 such as a medicine is enclosed in the packaging material 50, and The packaging material 50 can be opened before the introduction material 60 is introduced into the living body. For this reason, the living body introduction material 70 can be prevented from adhering to the inner wall of the lumen 21 and the living body introduction material 70 can be introduced into the living body without waste.

Further, in the case where the opening part 30 is configured to have a cutting part that forms a cut in the packaging material 50, the packaging material 50 is moved by a simple operation of moving the packaging material 50 in the lumen 21 of the long member 20. Therefore, the usability of the medical device 10 can be improved.

In addition, when the long member 20 is configured to have the holding portion 40 for holding the packaging material 50 in which the cut is formed on the long member 20, the packaging material 50 is replaced with the long member 20. Therefore, the packaging material 50 can be prevented from being introduced into the living body.

Further, when the holding unit 40 is configured to have the holding mesh material 41, the packaging material 50 can be held by the holding mesh material 41, and thus the packaging material 50 is brought into the living body. It can prevent suitably being introduced.

In addition, when the packaging material 50 is configured to have an opening assisting part 51 configured to be easier to form a cut in a part of the packaging material 50 than other parts of the packaging material 50, The living body introduction material 60 can be reliably removed from the packaging material 50.

Moreover, when the medical system 100 is comprised by the medical instrument 10 and the fluid supply part 60, the medical system for moving the packaging material 50 smoothly in the lumen | rumen 21 of the elongate member 20 with which the medical instrument 10 is provided. It becomes possible to provide.

<Modification>
Next, a modified example of the above-described embodiment will be described. In addition, the description is abbreviate | omitted about the member same as the member demonstrated in embodiment mentioned above.

6A and 6B show a medical instrument 110 according to the first modification. In this modification, the mechanism for holding the packaging material 150 in which the cuts are formed is different from the embodiment described above. Specifically, the holding portion is configured to have a hooking portion 127 on which the packaging material 150 is hooked and held when the packaging material 150 in which the cut is formed passes through the lumen 121 of the long member 120. Yes.

The long member 120 is configured to include a small-diameter portion 123 disposed on the distal end side and a large-diameter portion 125 disposed closer to the proximal end side than the small-diameter portion 123. An end portion on the proximal end side of the small diameter portion 123 is disposed in the large diameter portion 125, and this end portion is configured as a hook portion 127. Further, this end portion also has a function as a cutting portion for forming a cut in the packaging material 150.

As shown in FIG. 6B, when the packaging material is abutted against the hook portion 127, a cut is formed in the packaging material 150, and the living body introduction material 70 leaks from the packaging material 150. Further, the packaging material 150 is held by being hooked on the hook portion 127.

As described above, according to the medical instrument 110 shown in the present modification, the packaging material 150 in which a break is formed can be held in the hook portion 127 included in the holding unit, and thus the packaging material 150 is introduced into the living body. This can be suitably prevented.

FIG. 7A shows a medical instrument 210 according to the second modification. Also in this modified example, the mechanism for holding the packaging material 250 with cuts is different from the above-described embodiment. Specifically, the packaging material 250 includes a first diameter portion 251 having a first diameter, and a first diameter portion 251 formed on the distal end side of the first diameter portion 251 and having a smaller diameter than the first diameter portion 251. The second diameter portion 252 and the intermediate portion 253 connected to the first diameter portion 251 and the second diameter portion 252 are configured. Further, the holding part is configured to have an abutting part 225 that abuts and holds the intermediate part 253 of the packaging material 250 when the packaging material 250 passes through the lumen 221 of the long member 220.

The cutting part 30 for forming a cut in the packaging material 250 is arranged in the small diameter part 223 formed in the long member 220. When the packaging material 250 moves in the lumen 221, the tip of the packaging material 250 comes into contact with the cutting part 30. Thereby, a cut is formed in the packaging material 250 and the in-vivo introduction material 60 is leaked. At this time, the intermediate portion 253 of the packaging material 250 is abutted against the abutting portion 225 of the long member 220, whereby the packaging material 250 is held with respect to the long member 220.

Thus, according to the medical instrument 210 shown in this modification, the long member 220 holds the packaging material 250 by abutting the intermediate portion 253 of the packaging material 250 against the abutting portion 225 provided in the holding portion. Therefore, the packaging material 250 can be suitably prevented from being introduced into the living body.

FIG. 7B shows a medical instrument 310 according to Modification 3. In this modification, a predetermined string 333 is attached to the packaging material 310. The string 333 has a length derived from the proximal end side of the long member 320 when the packaging material 350 is introduced into the lumen 321 of the long member 320. According to the medical instrument 310 according to this modification, by holding the string 333 outside the lumen 321 of the long member 320, the packaging material 350 in which the cut is formed is prevented from being introduced into the living body. be able to. Further, it is possible to easily collect the packaging material 350 using the string 333. In addition, there is no restriction | limiting in particular about the diameter of the string 333, material, and the number of installation.

FIG. 7C shows a medical instrument 410 according to the fourth modification. In this modification, a guide member 460 for guiding the movement of the packaging material 450 within the lumen 421 of the long member 420 is provided. The guide member 460 is disposed in the lumen 421 of the long member 420. The guide member 460 guides the movement of the packaging material 450 so that the packaging material 450 moves along the axial direction in the lumen 421. In the illustrated modification, the guide member 460 is configured by a rail-structured member installed in the lumen 421 of the long member 420.

The packaging material 450 is provided with a string 433 for hooking the packaging material 450 to the guide member 460. In addition, the cutting part 30 is arrange | positioned on the guide member 460 so that it may contact, when the packaging material 450 moves along the guide member 460. FIG.

According to the medical instrument 410 according to this modification, the packaging material 450 can be moved along the axial direction of the long member 420, so that the packaging material 450 is brought into contact with the cutting portion 30. Can be prevented from being scattered and the like, and the packaging material 450 can be suitably prevented from being introduced into the living body. For example, if the packaging material 450 moves in the lumen 421 while rotating irregularly, the packaging material 450 may come into contact with the cutting portion 30 while rotating, and fragments of the packaging material 450 may be scattered. According to the medical instrument 410, such scattering of the packaging material 450 can be prevented in advance.

8A and 8B show a medical instrument 510 according to the fifth modification. 6 (A) and 6 (B), the hook member 127 functioning as a holding portion for holding the packaging material 550 is provided in the long member 120, and the hook member 127 is further attached to the packaging material 550. A configuration that functions as a cutting unit for cutting was shown. In this modified example, by sharply sharpening the tip of the hook portion 527 provided on the long member 520, it becomes easy to form a cut in the packaging material 550 by the hook portion 527, and further, the packaging material 550 in the hook portion 527. It is possible to increase the holding power.

As shown in FIG. 8B, when the packaging material 550 moves in the lumen 521 and is abutted against the hook portion 527, a cut is formed in the packaging material 550, and the living body introduction material 70 is transferred from the packaging material 550. Leak. Further, the packaging material 550 is held by being hooked on the hook portion 527.

As described above, according to the medical instrument 510 according to the present modification, a break is easily formed in the packaging material 550 by the hook portion 527, so that the introduction property of the living body introduction material 70 into the living body can be improved. Furthermore, since the holding power of the packaging material 550 in the hook portion 527 can be increased, the packaging material 550 can be more reliably prevented from being introduced into the living body.

The above-described embodiment and each modification can be combined as appropriate. For example, a mesh material for holding can be provided in each modification, and a packaging material in which an opening assisting part is formed in each modification can also be used.

Moreover, the cutting part provided in a long member should just have the structure which can form a cut | interruption in at least one part of a packaging material as a packaging material passes the lumen | rumen of a long member. For example, a wire wire, a blade wire, or a projecting shape that can puncture a packaging material can be appropriately employed. In addition, the cutting part is preferably arranged on the distal end side of the main body part as much as possible in consideration of adhesion of the biological introduction material to the inner wall of the lumen, but the position is not particularly limited, and the length of the long member It can be appropriately changed according to the dimensions and the like.

Second Embodiment
Next, a medical instrument according to a second embodiment of the present invention will be described. In addition, the description is abbreviate | omitted about the member same as the member demonstrated in 1st Embodiment mentioned above.

In the medical instrument according to the present embodiment, the configuration of the opening part that opens the packaging material is different from the medical instrument according to the first embodiment described above. In each medical instrument which concerns on 1st Embodiment, the cutting part which can open a packaging material by making a cut into a packaging material is used as an opening part. On the other hand, in the medical instrument 610 according to the present embodiment, an opening portion having a configuration capable of opening the packaging material without cutting the packaging material is provided. This is different from the first embodiment described above.

As shown in FIG. 9A, the medical device 610 includes an opening 630 that can open the packaging material 650 by opening the valve body 660 provided in the packaging material 650. . This opening part 630 functions as an opening part for opening the packaging material 650. More specifically, the packaging material 650 is provided with a valve body 660 that seals the opening 663 provided at a predetermined portion of the packaging material 650, and by opening the valve body 660, The living body introduction material 70 enclosed inside can be leaked to the outside of the packaging material 650. And the opening part 630 provided in the medical device 610 opens this valve body 660 by contacting the valve body 660. In addition, the valve body 660 can be comprised by the one-way valve etc. which were comprised openably by the contact with another member, for example.

The opening part 630 provided in the long member 620 is aligned and installed in advance so as to be abutted against a predetermined part of the valve body 660 provided in the packaging material 650, for example. Further, the opening 630 can be formed in a shape that protrudes toward the valve body 660 so that it can be easily brought into contact with the valve body 660, but is not limited to such a shape. The shape and structure which can open the said valve body 660 by contacting the valve body 660 should just be provided. However, in the case of the configuration shown in the figure, the packaging material 650 can be held in the opening portion 630. Therefore, there is no need to separately provide a holding portion for holding the packaging material 650. Can be made simpler.

If the packaging material 650 can be opened without forming a cut in the packaging material 650 like the medical device 610 according to the present embodiment, the following advantages are obtained. If a cut is formed in the packaging material 650, the packaging material 650 may be cut finely and the fragments may be scattered and introduced into the living body. On the other hand, if it becomes possible to take out the living body introduction material 70 from the packaging material 650 without forming a cut, it is possible to prevent the packaging material 650 from being scattered and the packaging material in the living body. It is possible to more suitably prevent 650 from being introduced.

The outer shape of the packaging material 650 can be formed in a substantially spherical shape as exemplified in the first embodiment. For example, as shown in the figure, the contact area of the long member 620 with the inner wall of the lumen 621 is small. It is preferable to use one having a large length dimension so as to be large. When the packaging material 650 is formed in such an outer shape, the packaging material 650 can easily move in the lumen 621 of the long member 620 along the axial direction. It becomes easy to make the opening part 630 provided in the member 620 contact.

As shown in FIG. 9A, by supplying a fluid to the long member 620, the packaging material 650 can be moved in the lumen 621 of the long member 620. For example, FIG. ), The packaging material 650 can also be moved within the lumen 621 using a pusher-like member 680. In addition, for example, a pressing member 685 provided on the distal end side of the pusher 680 is introduced into the packaging material 650, and the packaging material 650 and the pusher 680 are integrally formed. It can also be set as the structure which opens the valve body 660 by operation which moves the pusher 680 by comprising by a valve. Moreover, in such a form, by providing the elongate member 620 with the opening 630, the living body introduction material 70 can be taken out from the packaging material 650 by using the opening 630 and the pusher 660 together.

<Modification>
Next, with reference to FIG. 10 (A) and (B), the modification of the medical device which concerns on 2nd Embodiment is demonstrated.

The medical device 710 according to the present modification is provided with an opening that can leak the living body introduction material from the packaging material without forming a cut in the packaging material, as in the above-described embodiment. Specifically, an opening 770 is provided in the packaging material 750, and the opening portion is constituted by a string 730 for opening the opening 770.

As shown in FIG. 10A, the packaging material 750 is introduced into the long member 720 with the opening 770 closed. Then, as shown in FIG. 10 (B), after being moved through the lumen 721 of the long member 720, the opening 770 is opened by pulling the string 730 at a predetermined position, and enclosed inside. The living body introduction material 70 is leaked. In addition, after leaking the living body introduction material 70, the string 730 is pulled by a manual operation to collect the packaging material 750, or the packaging material 750 is held by the string 730 and the packaging material 750 is introduced into the living body. Can also be prevented.

Also in the medical device 710 according to this modification, since the living body introduction material 70 can be taken out from the packaging material 750 without forming a cut in the packaging material 750, it is possible to prevent the packaging material 750 from being scattered. It is possible to prevent the packaging material 750 from being introduced into the living body.

As mentioned above, although the medical instrument and medical system which concern on this invention were demonstrated based on several embodiment and several modification, this invention is not limited only to these embodiment and modification, and is a claim. It is possible to change appropriately based on the description of the range. For example, the opening part shown in each embodiment may be arranged on the front end surface of the long member, and the packaging material may be opened immediately after passing the lumen. Even in such a configuration, it is possible to suitably prevent the living body introduction material from adhering to the lumen.

This application is based on Japanese Patent Application No. 2012-215399 filed on September 28, 2012, the disclosure of which is incorporated by reference in its entirety.

10, 110, 210, 310, 410, 510, 610, 710 medical device,
20 long member,
21 lumens,
30 cutting part (opening part),
40 holding part,
41, 43 mesh material for holding,
50 packaging materials,
51 opening assistance part,
60 fluid supply section,
70 living body introduction material,
100 medical system,
127 hook part,
225 butting part,
251 First diameter portion of the packaging material,
253 second diameter portion of the packaging material,
255 middle part of the packaging material,
333 string,
460 guide member,
527 hook,
630 opening,
660 disc,
730 string,
770 Opening of packaging material.

Claims

A long member including a lumen extending from the distal end side to the proximal end side;
A medical device comprising: a packaging material enclosing a living body introduction material introduced into the living body through the long member, and an opening portion for opening the packaging material while passing through the lumen.
The opening portion is provided in the elongate member, and forms a cut for leaking the living body introduction material into at least a part of the packaging material as the packaging material passes through the lumen. The medical device according to claim 1, further comprising a cutting portion that performs cutting.
The opening part is provided on the long member, and has an opening part that opens the valve body by contacting a valve body that is provided on the packaging material and seals the packaging material. The medical device according to claim 1.
The medical device according to claim 1, wherein the opening portion is connected to an opening portion provided in the packaging material and has a string for opening the opening portion in a closed state. .
The medical device according to any one of claims 1 to 4, wherein the long member further includes a holding portion for holding the opened packaging material on the long member.
6. The medical instrument according to claim 5, wherein the holding part has a mesh material for holding the packaging material in the lumen.
The medical device according to claim 5 or 6, wherein the holding portion includes a hook portion that is hooked and held when the opened packaging material passes through the lumen.
The packaging material includes a first diameter portion having a first diameter, a second diameter portion formed on a distal end side than the first diameter portion, and having a diameter smaller than the first diameter portion, An intermediate portion connected to the first diameter portion and the second diameter portion;
The medical device according to any one of claims 5 to 7, wherein the holding portion has an abutting portion that is held against the intermediate portion when the packaging material passes through the lumen. Instruments.
9. The apparatus according to claim 1, further comprising a string attached to the packaging material and led out from a proximal end side of the long member when the packaging material is introduced into the lumen. Medical device as described in.
The guide member further includes a guide member that is disposed in the lumen of the elongate member and guides the movement of the packaging material so that the packaging material moves along the axial direction in the lumen. 10. The medical instrument according to any one of 9 above.
The packaging material according to any one of claims 1 to 10, wherein the packaging material has an opening assisting part configured to be easier to be opened than other parts of the packaging material, in a part of the packaging material. Medical instruments.
A medical device according to any one of claims 1 to 11,
And a fluid supply unit that supplies a fluid for moving the packaging material in the lumen to the elongated member.