WO2013081005A1 - 医療機器 - Google Patents
医療機器 Download PDFInfo
- Publication number
- WO2013081005A1 WO2013081005A1 PCT/JP2012/080744 JP2012080744W WO2013081005A1 WO 2013081005 A1 WO2013081005 A1 WO 2013081005A1 JP 2012080744 W JP2012080744 W JP 2012080744W WO 2013081005 A1 WO2013081005 A1 WO 2013081005A1
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- WO
- WIPO (PCT)
- Prior art keywords
- shape
- medical device
- closing member
- cavity
- negative pressure
- Prior art date
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-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/76—Handpieces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
- A61M1/87—Details of the aspiration tip, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/915—Constructional details of the pressure distribution manifold
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/916—Suction aspects of the dressing specially adapted for deep wounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/007—Auxiliary appliance with irrigation system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/041—Controlled or regulated
Definitions
- the present invention relates to a medical device, and more particularly to a medical device that can be suitably used for a treatment that applies a negative pressure locally in the body.
- Examples of inflammation of the pouch-like cavity existing in the body include appendicitis. Appendicitis is often treated by removing the appendix itself. On the other hand, even if appendicitis is suspected, it can be treated without removing the appendix, or it may not actually be appendicitis.
- Negative pressure therapy is described in Patent Document 1, for example.
- a foam as a recovery means for recovering the contents of the cavity is positioned and placed in a bag-like cavity (including an abscess) in the patient's body using an introducer.
- the foam is, for example, an open-cell polyurethane ether foam.
- This foam is connected to a vacuum apparatus via a flexible thin tube.
- the vacuum device includes a recovery device that recovers an effluent such as liquid that is forcibly discharged from a bag-like cavity, and a negative pressure source that creates a negative pressure in the cavity.
- the introducer is removed.
- a negative pressure is then applied to the foam. Since this negative pressure is evenly applied to the cavity wall by the foam, the bag-like cavity shrinks. As a result, fluids such as liquid and necrotic tissue present in the cavity are forcibly discharged from the cavity. This discharge is collected by a collecting device via a pipe. This effectively treats intracavitary inflammation. After treatment is complete, the foam is removed. In the case of this negative pressure therapy, it is necessary to seal the bag-shaped cavity.
- the sealing of the affected part depends on the shape of the foam and the cavity, the sealed state by a drape or the like such as a natural opening such as an anus or an opening formed in the body wall. Depending on these conditions, sealing may be incomplete, or negative pressure may be applied not only to the affected area but also to a relatively wide area around the affected area. These are not preferable because they can cause complications.
- This invention is made
- One aspect of the present invention is a medical device for endoscopically treating a bag-like cavity that opens into the body, and has a plurality of communication passages that are open to the outer surface.
- the medical device of the above aspect further includes a long shaft member having a lumen, connected to the suction member so that the lumen communicates with the communication path, and a pusher for moving the closing member.
- the closing member may be attached to the long shaft member so as to be movable in the axial direction of the long shaft member.
- the closing member may be formed of an elastically deformable material, introduced into the body in a state where the diameter is smaller than the initial shape, and restored to the initial shape in the body.
- the medical device of the said aspect is an expansion part which deform
- the said expansion part is a said 1st shape.
- An operation member for changing the shape to the second shape may be further provided.
- Another aspect of the present invention is a medical device for applying negative pressure therapy to a local area of the body, having a plurality of communication passages that open to the outer surface, and inserted into a bag-like cavity;
- An expansion part that is formed in a substantially cylindrical shape and is arranged inside the suction member and changes from the first shape to the second shape to expand the dimension of the suction member; and an outer peripheral surface of the extension part or A covering material that is attached to the inner peripheral surface and maintains the airtightness of the lumen of the expansion portion, and is attached to both axial end portions of the expansion portion to airtightly cover the axial end surface of the suction member.
- a closing member connected to the covering member while maintaining airtightness, and a long shaft member that penetrates the closing member and communicates the communication passage with its lumen. Is open.
- the negative pressure state can be limited to the region to be treated and the local negative pressure state can be easily and suitably maintained, simple and reliable negative pressure therapy can be performed.
- the main site to be treated in the present invention is a bag-like cavity such as an appendix of a subject, or a cavity curved in a bag-like shape such as an abscess or a diverticulum, or the like.
- bag-like cavities are collectively referred to as “bag-like cavities”.
- an anastomosis portion of the digestive tract is also included in the site to be treated.
- “treating inflammation” means that “negative pressure therapy” in which a negative pressure is applied to a local region including a target site itself.
- This treatment system is a system that includes the medical device of the present invention and implements a method for treating inflammation in a bag-like cavity inside a subject.
- the treatment system 1 includes an endoscope apparatus 11.
- the endoscope apparatus 11 includes a flexible endoscope 12 having a flexible insertion portion 12A that can be inserted into a body cavity LB inside the subject P, and a monitor 13.
- the endoscope 12 can display on the monitor 13 an image acquired by an imaging element (not shown) provided at the distal end of the insertion portion 12A.
- Various channels (hereinafter collectively referred to simply as channels) CN for performing various functions necessary for examination and treatment using an endoscope such as air supply, water supply, and treatment instrument insertion are provided in the insertion portion 12A. It is formed along the axial direction.
- the treatment system 1 includes a light source 20, a water / air supply device 21, a suction catheter (long shaft member) 22, a pressure tank 23, a tube 24, a valve (or connector) 25, and a vacuum.
- a pump 26 is provided.
- this treatment system 1 also includes a treatment device (medical device) 31 held at a target site where negative pressure therapy is performed.
- the suction catheter 22 has a lumen (lumen) for suction, and is guided to the appendix (bag-shaped cavity) AC inside the subject P through the channel CN of the insertion portion 12A of the endoscope 12. .
- a treatment device 31 is disposed at the distal end of the suction catheter 22, and a pressure tank 23 is connected to the proximal end portion.
- the pressure tank 23 is connected to a vacuum pump 26 via a pipe 24.
- a valve 25 for interrupting the path is inserted in the middle of the pipe 24. Therefore, when the valve 25 is opened and the vacuum pump 26 is driven to exhaust, the inside of the pressure tank 23, that is, the inside of the suction catheter 22 can be set to a desired negative pressure and the negative pressure can be maintained. .
- the treatment device 31 includes an applicator 34 to be inserted into the appendix AC, and a substantially disc-shaped closing member 32 disposed on the proximal end side of the applicator 34.
- FIG. 2A is a cross-sectional view showing the applicator 34 and the closing member 32 of the treatment device 31, and FIG. 2B is a cross-sectional view showing the applicator 34 in an expanded state.
- the applicator 34 includes an expansion portion 35 that expands itself so as to be in close contact with the inner surface of the bag-like cavity, and a sponge (suction member) 36 that is disposed so as to cover the outer surface of the expansion portion 35.
- the extended portion 35 is formed by bundling the tip ends of a plurality of wire rods 35A made of, for example, a super elastic wire or a piano wire, and is arranged inside the sponge 36.
- the proximal end side of the expansion portion 35 is fixed to the distal end portion of the suction catheter 22.
- the expansion part 35 expands into a shape (second shape) like a known basket used for collecting and crushing gallstones in a natural state where no external force acts.
- the wire 35A of the expansion part 35 is introduced into the body, the wire 35A is deformed into a substantially linear shape (first shape) and stored in a storage sheath (operation member) 37 as shown in FIG. 2A.
- the proximal end portion of the storage sheath 37 protrudes from the proximal end of the suction catheter 22, and when the operator pulls the proximal end portion of the storage sheath 37 and retracts the storage sheath 37 with respect to the suction catheter 22, FIG.
- the expansion part 35 expands in a basket shape.
- the sponge 36 is a porous and flexible member having a known structure having a large number of bubbles and having a large number of holes opened on the outer surface. Since the bubbles formed in the sponge 36 are partially in communication with each other, a large number of communication paths (not shown) exist between the outer surface 36 ⁇ / b> A and the inner surface 36 ⁇ / b> B in contact with the expanded portion 35. These communication passages communicate with the lumen of the suction catheter 22. Since the sponge 36 has flexibility, when the expansion part 35 is expanded in a basket shape, the sponge 36 is expanded in accordance with the shape of the expansion part.
- FIG. 2C and 2D show another configuration example of the applicator 34.
- FIG. The applicator 34a does not have the storage sheath 37. Instead, an operation wire (operation member) 38 is connected to a tip 37 ⁇ / b> A that binds the distal end side of the wire 35 ⁇ / b> A of the expansion portion 35.
- the operation wire 38 has such a rigidity that it does not buckle even if operated so as to advance toward the tip 37 ⁇ / b> A, and its proximal end protrudes from the proximal end side of the suction catheter 22.
- the shape of the expanded portion 35, particularly the radial dimension (see FIG. The dimension D1) shown in 2D can be adjusted to the desired value. Therefore, as will be described later, it is possible to adjust the shape of the applicator in accordance with the treatment progress of the target site.
- the closing member 32 is, for example, a substantially disc-shaped member made of non-porous silicone having flexibility, and can be elastically deformed.
- the closing member 32 is attached to the suction catheter so as to be movable in the longitudinal direction of the suction catheter 22, and can be approached and separated from the applicator 34.
- the initial shape of the closing member 32 is preferably a curved shape so as to be concave toward the tip of the applicator 34. This is because the closing member 32 is in close contact with the edge of the opening of the appendix AC. For this reason, the diameter of the closing member 32 needs to be large enough to close the opening, and it is desirable that the size can be selected according to the patient.
- Appendiceal AC Length from the opening to the tip of about 50 to 100 mm, inner diameter of about 5 to 10 mm
- Closing member 32 material silicone, diameter of about 20 to 30 mm, thickness of about 1 to 3 mm
- the body cavity LB refers to the entire part from the anus to the cecum AX of the large intestine.
- the large intestine LB reaches from the anal side to the cecum AX through the rectum, sigmoid colon, descending colon, transverse colon, ascending colon.
- the appendix AC given as an example of the bag-like cavity is a thin little finger-like cephalic tube protruding from the rear inner wall of the lower end of the cecum AX.
- FIG. 3 is a flowchart showing the flow of a negative pressure therapy procedure using the treatment system 1.
- the operator inserts the insertion portion 12A of the endoscope 12 from the anus of the subject P through the large intestine LB to the appendix AC of the cecum AX (FIG. 3, step S1).
- step S2 the operator observes the inside of the appendix AC and the periphery of the opening with the endoscope 12 (step S2). As a result of this observation, if there is a cause of clogging of the appendix AC such as fecal stone, it is removed using a treatment tool (not shown) introduced via the channel CN (step S3). Further, the water supply / air supply device 21 is driven to clean the inside of the appendix AC (step S4).
- the operator positions the distal end of the insertion portion 12A of the endoscope 12 so that the opening of the appendix AC is looking forward (step S5: see FIG. 4A).
- the operator inserts the suction catheter 22 into the channel CN of the insertion portion 12A and introduces it into the body of the patient P, and the applicator 34 of the treatment device 31 attached to the distal end of the suction catheter 22 from the distal end of the insertion portion 12A. Project (step S6: see FIG. 4B).
- the applicator 34 is positioned so as to face the opening of the appendix AC.
- the operator advances the suction catheter 22 straightly and slowly toward the opening of the appendix AC, and brings the tip of the suction catheter 22 into contact with the bottom (depth wall) of the appendix AC ( Step S7).
- the applicator 34 attached to the distal end portion of the suction catheter 22 also moves forward slowly, enters the appendix AC, and comes into contact with the bottom of the appendix AC (see FIG. 4C).
- step S7-2 see FIG. 4D.
- this step may not be performed when the structure of the applicator 34 is different.
- the operator can remove the endoscope 12 while leaving the applicator 34 and the suction catheter 22, and then insert the endoscope 12 again along the suction catheter 22 to observe the applicator 34.
- Advance to position the proximal end side of the suction catheter 22 is inserted into the closing member 32, and the closing member 32 is sent along the suction catheter 22 toward the applicator 34 (step S8).
- a pusher tube (pusher) 33 is used and advanced until the closing member 32 comes into contact with the periphery of the opening of the appendix AC (see FIGS. 4E and 4F).
- the applicator 34 and the closing member 32 of the treatment device 31 are installed in the appendix AC.
- the portion on the proximal end side of the suction catheter 22 protrudes from the anus of the patient P, and the suction catheter 22 is connected to the pressure tank 23.
- step S9 the operator drives the vacuum pump 26 to hold the pressure tank 23 at a negative pressure of a desired value.
- negative pressure is also applied to the lumen of the appendix AC via the sponge 36 and the suction catheter 22.
- the endoscope 12 is removed.
- the closing member 32 comes into close contact with the periphery of the opening of the appendix AC, and the pressure difference between the lumen of the appendix AC and the outside of the appendix AC is reliably maintained. That is, the pressure inside the appendix AC is maintained at a negative pressure of a desired value, but no negative pressure is applied inside the cecum AX or the large intestine LB.
- the negative pressure therapy for the patient P is continuously performed by maintaining the negative pressure state in which the suction catheter 22 is moved out of the body for a predetermined period such as several hours or several days.
- the inner surface of the appendix AC is sucked through the closely attached sponge 36, blood circulation is improved and cells are activated to improve inflammation and the like. Contents such as pus sucked from the appendix AC by negative pressure therapy are collected in a pressure tank 23 that also serves as a drainage collection container. As the inflammation is healed, the cavity of the appendix AC may be reduced. However, since the wire 35A has elasticity, the movement of the wall of the appendix accompanying such reduction is less likely to be inhibited by the expanded portion. As the cavity is reduced, the expansion portion 35 is also reduced.
- step S10 the operation of the vacuum pump 26 is stopped and the pressure in the pressure tank 23 is returned to atmospheric pressure (step S10). Thereafter, the suction catheter 22 and the treatment device 31 are removed, and the treatment is completed.
- the applicator 34 can be easily inserted and placed in the appendix AC by advancing the suction catheter 22 introduced into the patient's body via the endoscope 12. Then, the closing member 32 fed next is brought into contact with the edge of the opening of the appendix AC, and then negative pressure is applied through the suction catheter 22, so that the closing member 32 is brought into close contact with the opening of the appendix AC, and the appendix
- the inside of the AC is preferably sealed.
- the negative pressure state can be maintained easily and suitably.
- negative pressure therapy can be easily and reliably applied to the appendix AC.
- the area where the negative pressure is applied is small, the negative pressure can be applied much more efficiently than when the whole large intestine is set to the negative pressure, for example.
- the applicator 34 has the expanded portion 35, even when the target bag-shaped cavity is expanded due to inflammation or the like, the surface area is increased to the same extent as the inner area of the cavity.
- a suction member such as a sponge can be suitably adhered to the inner surface of the cavity.
- the wire 35A has elasticity, when it is expanded, it is expanded along the inner surface of the appendix AC, and an excessive load is not applied to the wall of the appendix AC.
- the surface area of the applicator does not necessarily have to be increased to the same as the inner area of the cavity, and even if a slight gap remains between the suction member and the inner surface of the cavity before applying negative pressure. Good. Even in this case, when a negative pressure is applied by sealing with the closing member 32, the lumen of the cavity is reduced, the suction member and the inner surface of the cavity are brought into close contact with each other, and negative pressure therapy is suitably performed. However, if the surface area of the applicator is too small with respect to the inner area of the cavity, a part of the inner surface of the cavity is folded when the cavity is contracted, and a part of the inner surface does not come into contact with the suction member.
- the applicator has an expansion portion.
- the applicator does not have the expansion portion, it is preferable to prepare suction members having a plurality of sizes and select them according to the inner area of the cavity.
- the closing member 32 is moved using the pusher tube 33 .
- the structure and configuration of the pusher are not limited to this, and can move forward and backward along the long axis member, and the closing member can be moved. If it can be made, there is no restriction
- the treatment device and the suction catheter are introduced via the channel formed in the endoscope
- the endoscope is used. It may be introduced via an external channel attached to the mirror insert.
- Fig. 5A shows a modification of the applicator.
- the applicator 41 has flexibility and is hollow inside, and is integrally connected to the suction catheter 22. Further, the applicator 41 is formed with a large number of holes (communication passages) HL penetrating in and out of the applicator 41, and a portion where the hole HL is formed is a suction member.
- FIG. 5B shows another modification of the applicator.
- An applicator 42 according to this modification is made of a mesh-like or porous member made of a resin such as fluorine-based resin or nylon, and includes a suction member 42A having a large number of communication passages that open to the outer surface and communicate with the inside. I have.
- the applicator 42 has the same shape as the applicator 41 described above, and is integrally formed at the distal end of the suction catheter 22.
- the applicators 41 and 42 described above do not include an expansion portion and have the same diameter as the suction catheter 22, but the surface area of the outer surface of the suction member is equivalent to the inner wall of the target site such as the appendix AC.
- the diameter may be expanded.
- the suction member may be formed of a material that can be deformed to the extent that it can pass through the channel CN.
- a configuration in which only a general sponge 36 as a suction member is attached to the distal end portion of the suction catheter 22 may be used as the applicator.
- the negative pressure therapy can be suitably performed by sealing the opening of the target site with the closing member.
- FIG. 6A shows a modification of the closing member.
- This closing member 61 can be suitably used in combination with the applicator 41 or 42 of the above-described modification.
- the closing member 61 has a taper 61A formed so as to substantially match the shape of the opening entrance of the appendix AC. Therefore, when the taper 61A is in close contact with the opening, the appendix AC can be sealed so as to plug the opening, and the position of the closing member 61 is shifted during the waiting time until negative pressure is applied. Can be prevented.
- negative pressure as shown to FIG. 6B, adhesiveness with an opening part increases further, and negative pressure therapy can be performed suitably.
- FIG. 6C shows another modification of the closing member.
- This closing member 62 can also be suitably used in combination with the applicator 41 or 42 of the modified example.
- the closing member 62 includes a disc 62A formed of a resin such as silicone, and an adhesive layer 62B formed in a ring shape along the peripheral edge of the appendix side surface of the disc 62A. If this closure member 62 is used, as shown to FIG. 6D, the contact bonding layer 62B can be adhere
- FIGS. 7A to 7C A second embodiment of the treatment system according to the present invention will be described with reference to FIGS. 7A to 7C.
- the same reference numerals are given to the constituent members having the same or equivalent functions as those in the first embodiment, and the description thereof is omitted or simplified.
- FIG. 7A shows a treatment device 46 used in this treatment system.
- the treatment device 46 has a structure in which the closing member 32 is integrally attached to the applicator 41 located at the distal end portion of the suction catheter 22 from the beginning. That is, the closing member 32 does not move along the suction catheter 22.
- the structures of the suction catheter 22, the applicator 41, and the closing member 32 are the same as those described above.
- the integrated applicator 41 (connected integrally with the suction catheter 22) and the closing member 32 are inserted through a guide tube CS externally attached to the endoscope 12, as shown in FIG. 7B.
- the closing member 32 is elastically deformed and folded toward the proximal end side of the suction catheter 22 in the guide tube CS. Therefore, when the suction catheter 22 is moved forward and out of the distal end of the guide tube CS, the closing member 32 is released from the folded state due to its elasticity as shown in FIG. 7C, and the appendix AC can be closed. Return to initial shape.
- the closing member 32 Since the closing member 32 is fixed in the vicinity of the proximal end portion of the applicator 41, when the applicator 41 is inserted into the appendix AC under endoscopic observation, it is integrated in the same manner as in the first embodiment.
- the closing member 32 comes into contact with the opening so as to close the opening of the appendix AC.
- the appendix AC can be sealed and negative pressure therapy can be suitably performed.
- the treatment device 46 according to the second embodiment can exhibit the same operation as that of the first embodiment. Further, in the case of the treatment device 46, since the axial position of the closing member 32 with respect to the applicator 41 is determined in advance, compared to the case where the closing member is sent alone later as in the first embodiment, the feeding is performed. Can be saved.
- a treatment device may be selected in accordance with the size of the appendix AC confirmed by endoscopic observation in advance.
- the treatment device of the present embodiment may be inserted into the channel CN instead of being inserted into the external guide tube CS, or may be attached to the guide attached to the insertion portion 12A and inserted into the guide tube. Instead, it may be introduced parallel to the insertion portion 12A and introduced into the body.
- the covering material is attached to the outer peripheral surface side of the extension portion
- the covering material may be attached to the peripheral surface side without the extension portion.
- FIG. 8A is a perspective view showing the treatment device 71 of the present embodiment
- FIGS. 8B and 8C are views showing an operation when the treatment device 71 is used.
- the treatment device 71 includes an expansion part 72, a sponge 36 attached so as to cover the outer peripheral surface of the expansion part, and a closing member 73 attached to both axial ends of the expansion part. And.
- the expansion part 72 is formed in a substantially cylindrical shape with the wire rod 72A, and expands to a predetermined diameter in a natural state.
- a sealing material 78 having airtightness is attached to the outer peripheral surface of the extended portion 72, and airtightness is ensured between the outer peripheral surface and the lumen.
- a known covered stent or a structure having an equivalent structure can be used as such an extended part 72 and the covering material 78.
- a wire mesh structure may be used as an expansion part in addition to this.
- the closing member 73 is formed in a substantially donut shape having an opening at the center, and is made of a material such as silicone having airtightness and flexibility.
- the closing member 73 is attached to both end portions in the axial direction of the expansion portion 72 and covers the end surfaces 36C on both sides in the axial direction of the sponge 36 arranged in a substantially cylindrical shape in an airtight manner. Further, the inner periphery of the opening at the central portion of the closing member 73 is connected to the covering material 78 so as to maintain airtightness.
- the proximal end side closing member 73B is provided with a through hole 74 penetrating in the thickness direction, and a tube (long-axis member) 75 for applying a negative pressure is provided in the through hole 74. It is connected to the.
- the lumen of the tube 75 communicates with the communication path of the sponge 36 and is connected to the pressure tank 23 and the vacuum pump 26 in the same manner as the suction catheter 22.
- the lumen of the substantially cylindrical expansion portion 72 is kept airtight by the covering material 78 and is open at both ends.
- the operation when using the treatment device 71 of the present embodiment configured as described above will be described.
- the main target part of the treatment device 71 is an anastomosis Ans (see FIG. 8B) formed by partial excision of the digestive tract or the like.
- the operator retracts the treatment device 71 (with the expanded portion 72 in the first shape), accommodates it in the storage sheath 76 as shown in FIG. It introduces to the part Ans vicinity.
- the operator positions the treatment device 71 so that the outer peripheral surface of the sponge 36 extends over the proximal side and the distal side of the anastomosis portion Ans. Then, while holding the proximal end side of the treatment device with the rod 77 inserted into the storage sheath 76, the storage sheath 76 is retracted with respect to the rod 77. Then, the treatment device 71 moves out of the storage sheath 76, the expansion portion 72 expands to a predetermined diameter (second shape), and the outer peripheral surface of the sponge 36 is the digestive tract as shown in FIG. 8C. Close contact with the wall. After the expansion part 72 is expanded, the storage sheath 76 and the rod 77 may be removed.
- the closing member 73 since the closing member 73 is in close contact with the wall of the digestive tract in the circumferential direction, the sponge 36 is positioned by the two closing members 73, the covering material 78 attached to the extension 72, and the wall of the digestive tract.
- the space is sealed with airtightness. Therefore, in this state, by applying negative pressure to the space where the sponge 36 is located via the tube 75, negative pressure therapy can be suitably performed on a local region including the anastomosis portion Ans.
- the treatment device 71 of the present embodiment even if a site that is not a bag-like cavity, such as the anastomosis portion Ans, is a target site, it is preferably locally applied without negative pressure in the entire digestive tract or the like. Negative pressure therapy can be performed.
- both ends of the lumen are open and during negative pressure therapy. Liquid or solid can pass through the lumen of the extension 72. Therefore, negative pressure therapy can be suitably performed on the anastomosis and the like without occluding the luminal tissue such as the digestive tract.
- the structure like the expansion part of the present embodiment can be applied to the applicator 81 for a bag-like cavity.
- the storage sheath 76 may be inserted into the suction catheter 22 so as to store only the wire rod 72A, and the suction member such as the sponge 36 closes the opening on the distal end side of the substantially cylindrical extension portion 72.
- the housing sheath 76 may be retracted while holding the wire rod 72A with the rod 77 in substantially the same manner as the treatment device 71.
- the present invention can be applied to a device for performing negative pressure therapy on a living body.
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Abstract
Description
本願は、2011年11月30日に、米国に仮出願された米国仮出願61/564943号に基づき優先権を主張し、その内容をここに援用する。
この陰圧療法の場合、袋状の腔の密閉を要する。この密閉に関して、特許文献1に記載の手技の場合、圧力分配器としての発泡体により治療される腔の形状、導入器が押入される身体の通路の構造(例えば患者の肛門)、又は、身体表面の真空補助治療で使用される接着性のあるドレープなどにより達成される。
本発明は、上述の事情に鑑みてなされたものであり、その目的は、簡単且つ確実な陰圧療法を施すことができる医療機器を提供することである。
なお、本発明において治療の対象としている主な部位は、被検体の虫垂などの袋状の腔のほか、膿胞や憩室などの袋状又はそれに近い形で湾曲した腔であり、以下、それらを総称して「袋状の腔」と呼ぶ。その他、後述するように消化管の吻合部等も治療対象の部位に含まれる。また、本発明において「炎症を治療する」とは、対象部位を含む局所領域に、陰圧を掛ける「陰圧療法」を施すこと自体を意味する。
この治療システム1は、図1に示すように、内視鏡装置11を備える。この内視鏡装置11は、被検体Pの内部の体腔LBに挿入可能な撓み性のある挿入部12Aを有する軟性の内視鏡12と、モニタ13とを備える。内視鏡12は、挿入部12Aの先端に設けた図示しない撮像素子で取得した画像をモニタ13に表示させることができる。挿入部12Aには送気、送水、処置具挿入など内視鏡を用いた検査および治療に必要な各種の機能を果たすための各種のチャンネル(以下、総称して単にチャンネルと呼ぶ。)CNがその軸方向に沿って形成されている。
吸引カテーテル22は、吸引のためのルーメン(内腔)を有し、内視鏡12の挿入部12AのチャンネルCNを介して被検体Pの内部の虫垂(袋状の腔)ACまでガイドされる。吸引カテーテル22の先端には治療デバイス31が配置され、基端部には圧力タンク23が接続される。圧力タンク23は管24を介して真空ポンプ26に接続されている。管24の途中には、その経路を断続するバルブ25が介挿されている。このため、バルブ25を開放して真空ポンプ26を排気駆動させると、圧力タンク23の内部、すなわち吸引カテーテル22の内部を所望値の陰圧に設定するとともに、その陰圧を保持することができる。
虫垂AC:開口から先端部までの長さ 約50から100mm、内径 約5から10mm
閉鎖部材32:材質 シリコーン、径 約20から30mm、厚さ 約1から3mm
なお、上述した実施例において使用したアプリケータ及び閉鎖部材は前述した構成のものに限定されることなく、様々な形態に変形してもよい。
図7Aから図7Cを参照して、本発明に係る治療システムの第2の実施例を説明する。なお、本実施例及びそれ以降の実施例において、前述した第1の実施例と同一又は同等の作用を有する構成部材には同一符号を付してその説明を省略又は簡略化する。
この実施例は、陰圧療法を行う対象部位が袋状の腔でない場合に好適に使用できる構成である。
図8Aは、本実施例の治療デバイス71を示す斜視図であり、図8Bおよび図8Cは、治療デバイス71の使用時の動作を示す図である。図8Aおよび図8Bに示すように、治療デバイス71は、拡張部72と、拡張部の外周面を覆うようにとりつけられたスポンジ36と、拡張部の軸方向両端部に取り付けられた閉鎖部材73とを備えている。
11 内視鏡装置
12 内視鏡
12A 挿入部
13 モニタ
20 光源
21 送気装置
22 吸引カテーテル
23 圧力タンク
24 管
25 バルブ
26 真空ポンプ
31 治療デバイス
32 閉鎖部材
33 プッシャチューブ
34 アプリケータ
34a アプリケータ
35 拡張部
35A 線材
36 スポンジ
36A 外面
36B 内面
36C 端面
37 収納シース
37A チップ
38 操作ワイヤ
41 アプリケータ
42 アプリケータ
42A 吸引部材
46 治療デバイス
61 閉鎖部材
61A テーパ
62 閉鎖部材
62A ディスク
62B 接着層
71 治療デバイス
72 拡張部
72A 線材
73 閉鎖部材
73B 閉鎖部材
74 貫通孔
75 チューブ
76 収納シース
77 ロッド
78 被覆材
81 アプリケータ
AC 虫垂
Ans 吻合部
AX 盲腸
CN チャンネル
CS ガイドチューブ
HL 孔
LB 大腸(体腔)
P 患者(被検体)
Claims (5)
- 体内に開口する袋状の腔を内視鏡的に治療するための医療機器であって、
外面に開口する複数の連通路を有し、前記袋状の腔内に挿入される吸引部材と、
前記袋状の腔の開口に当接されて、前記開口を気密に密閉する閉鎖部材と、
を備えることを特徴とする医療機器。 - 請求項1に記載の医療機器であって、
ルーメンを有し、前記ルーメンが前記連通路と連通するように前記吸引部材と接続された長軸部材と、
前記閉鎖部材を移動させるためのプッシャと、
をさらに備え、
前記閉鎖部材は、前記長軸部材の軸方向に移動可能に前記長軸部材に取り付けられていることを特徴とする医療機器。 - 請求項2に記載の医療機器であって、
前記閉鎖部材は、弾性変形可能な材料で形成され、初期形状よりも縮径された状態で体内に導入され、体内で前記初期形状に復元されることを特徴とする医療機器。 - 請求項1に記載の医療機器であって、
第一の形状と、前記第一の形状に比して拡張された第二の形状との間で変形する拡張部と、
前記拡張部を前記第一の形状から前記第二の形状に変化させるための操作部材と、
をさらに備えることを特徴とする医療機器。 - 体内の局所に陰圧療法を施すための医療機器であって、
外面に開口する複数の連通路を有し、袋状の腔内に挿入される吸引部材と、
略円筒状に形成されて前記吸引部材の内側に配置され、第一の形状から第二の形状に変化することにより、前記吸引部材の寸法を拡張させる拡張部と、
前記拡張部の外周面または内周面に取り付けられ、前記拡張部の内腔の気密性を保持する被覆材と、
前記拡張部の軸方向両端部に取り付けられて、前記吸引部材の軸方向の端面を気密に被覆するとともに前記被覆材と気密性を保持して接続される閉鎖部材と、
前記閉鎖部材を貫通して前記連通路と自身のルーメンとが連通された長軸部材と、
を備え、
前記内腔の両端部が開口していることを特徴とする医療機器。
Priority Applications (4)
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JP2013531030A JP5450904B2 (ja) | 2011-11-30 | 2012-11-28 | 医療機器 |
CN201280040132.6A CN103747744B (zh) | 2011-11-30 | 2012-11-28 | 医疗器械 |
EP12854246.1A EP2786713B1 (en) | 2011-11-30 | 2012-11-28 | Medical device |
US13/944,366 US8926576B2 (en) | 2011-11-30 | 2013-07-17 | Medical device |
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US201161564943P | 2011-11-30 | 2011-11-30 | |
US61/564,943 | 2011-11-30 |
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US13/944,366 Continuation US8926576B2 (en) | 2011-11-30 | 2013-07-17 | Medical device |
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WO2013081005A1 true WO2013081005A1 (ja) | 2013-06-06 |
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PCT/JP2012/080744 WO2013081005A1 (ja) | 2011-11-30 | 2012-11-28 | 医療機器 |
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US (1) | US8926576B2 (ja) |
EP (1) | EP2786713B1 (ja) |
JP (1) | JP5450904B2 (ja) |
CN (1) | CN103747744B (ja) |
WO (1) | WO2013081005A1 (ja) |
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Also Published As
Publication number | Publication date |
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CN103747744B (zh) | 2016-04-27 |
US20140031773A1 (en) | 2014-01-30 |
EP2786713B1 (en) | 2017-05-31 |
JP5450904B2 (ja) | 2014-03-26 |
CN103747744A (zh) | 2014-04-23 |
US8926576B2 (en) | 2015-01-06 |
EP2786713A1 (en) | 2014-10-08 |
JPWO2013081005A1 (ja) | 2015-04-27 |
EP2786713A4 (en) | 2015-11-11 |
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