WO2011111703A1 - 手術用圧排体 - Google Patents
手術用圧排体 Download PDFInfo
- Publication number
- WO2011111703A1 WO2011111703A1 PCT/JP2011/055376 JP2011055376W WO2011111703A1 WO 2011111703 A1 WO2011111703 A1 WO 2011111703A1 JP 2011055376 W JP2011055376 W JP 2011055376W WO 2011111703 A1 WO2011111703 A1 WO 2011111703A1
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- WIPO (PCT)
- Prior art keywords
- exclusion
- exclusion body
- expansion stress
- compression
- shape
- 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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/36—Surgical swabs, e.g. for absorbency or packing body cavities during surgery
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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
- A61B2017/00831—Material properties
- A61B2017/00898—Material properties expandable upon contact with fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B2017/0212—Cushions or pads, without holding arms, as tissue retainers, e.g. for retracting viscera
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
- A61B2017/0225—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery flexible, e.g. fabrics, meshes, or membranes
Definitions
- the present invention relates to a surgical retraction body used when excluding an organ other than a target organ (operation target organ) in a surgical operation.
- Surgery is broadly divided into surgery performed by making a large incision in the abdomen, chest, etc. (hereinafter sometimes referred to as laparotomy) and endoscopic surgery performed through a small hole opened in the abdomen.
- organs other than the target organ may be in the way, making operation difficult. For this reason, it is desirable to exclude the other organs that obstruct visual field securing and secure a visual field for the operation.
- a method for excluding the organ outside the target there is a method of excluding the organ outside the target by pushing away the organ outside the target using an extruding body made of sponge or the like in addition to the method of inclining the patient's posture and excluding it by gravity.
- a thick flat-plate cellulose sponge extrudate is known as a sponge extrudate for laparotomy. Since the cellulose sponge retraction body becomes soft by sucking the liquid, it can be gently repressed against the non-target organ. In addition, since it swells due to liquid absorption, it exhibits an appropriate repulsive force and has a certain amount of weight, and its surface is rough, so even if the surgeon or assistant does not hold it down, the exclusion body It is possible to exclude non-target organs by the presence of
- a retraction tool for an endoscope in which an annular frame made of a superelastic alloy is attached around a rubber sheet has been proposed (for example, see Patent Document 1).
- the endoscopic retraction tool is crushed into a thin linear shape, inserted from a trocar (also called a trocar), and then widened by the restoring force of the annular frame in the body cavity. It is to exclude organs.
- an endoscopic retraction tool (supporting forceps) provided with a balloon at the tip has also been proposed (see, for example, Patent Document 2).
- the balloon is folded and stored in a cylindrical handle portion, and in this state, the balloon is inserted into the body cavity through the trocar, and then the handle is shifted to expose the balloon, and the gas is inflated to inflate the organ. Do support. After use, the balloon is evacuated, folded and stored in a cylindrical handle, and removed from the trocar.
- the retraction device described in Patent Documents 1 and 2 is configured to relieve an organ with a relatively soft rubber sheet or balloon, the frame and handle portions that support the retraction device are hard. Therefore, the above-described cellulose sponge extrudate is superior in that it gently extrudes the organ in the body cavity.
- the extrudate made of cellulose sponge has various advantages, but only a rectangular flat plate shape is known as its form.
- the endoscopic relieving body is configured such that the relieving body main body is made of a water-swellable material (for example, cellulose sponge), and the retraction body main body is formed into a rod-like cross section (cross section in a direction perpendicular to the longitudinal direction). Is formed so as to be smaller than the cross-section of the cylindrical lumen of the trocar. According to the endoscopic retraction body, it can be inserted into the body cavity from the trocar, and then can be enlarged by supplying water in the body cavity to swell and absorb water, so that the organ can be sufficiently relieved.
- a water-swellable material for example, cellulose sponge
- the invention of the above-mentioned application has an excellent effect, but regarding the shape after swelling, only a rectangular flat plate or the like is introduced.
- an object is to provide a surgical extrudate that is more convenient to use.
- the surgical retraction body according to the present invention is a retraction body that is inserted into the body during surgery, and the retraction body body of the retraction body is subjected to an expansion stress in the anti-compression direction by compressing and forming the water-swellable material.
- the residual expansion stress has a different value depending on the part.
- the surgical retraction body of the present invention can be applied to any case for endoscope and open surgery (including thoracotomy).
- the “water-absorbing expandable material” refers to a material that exhibits the property of expanding by absorbing water, and examples thereof include cellulose sponge.
- the “expansion stress” means a restoring force that tends to swell in a direction opposite to the compression direction.
- the body of the exclusion body is made of the water-swellable material formed by compression, so that when water is applied, it swells and becomes large. And since expansion stress changes with parts, when it swells, the part which swells greatly and the part which swells small arise according to the level of the value of expansion stress (strongness). Depending on the size, the shape after swelling differs from that before swelling (compressed state). In other words, it does not simply swell in a similar shape, but swells in a different shape.
- a shape after swelling As a shape after swelling, a flat plate shape having a wide central portion (see FIG. 3C described later) or a shape obtained by cutting out a part of a rectangular flat plate shape (described later FIG. 9B). Reference) is given as a representative example, but is not limited to these, and various shapes are possible. Examples of the shape before swelling (compressed state) include a rod shape (see FIG. 1 described later), a cube, a rectangular parallelepiped, and the like.
- the shape before the swelling is not limited to the shape after the swelling, but can be formed, for example, as a rod-shaped body, a rectangular parallelepiped, or the like, so that it can be inserted from the trocar as an endoscope exclusion body.
- the shape before the swelling is not limited to the shape after the swelling, but can be formed, for example, as a rod-shaped body, a rectangular parallelepiped, or the like, so that it can be inserted from the trocar as an endoscope exclusion body.
- an extrudate for laparotomy compact storage is possible during storage. And after swelling, it becomes a desired irregular shape.
- thermoplastic resin welding portion is provided on at least one surface of the pressure applying surface when the exclusion body main body is compression-formed, and the exclusion body main body is restrained by the welding portion. It is preferable that it is comprised. That is, it is preferable that a thermoplastic resin welded portion is provided across a portion of the extrudate body where the expansion stress differs.
- the compression body formed by compression as described above swells and grows when moisture is applied, but the welded portion does not stretch (does not swell) even when moisture is applied, and therefore is pulled against the swollen portion. It acts to (suppress swelling). Thereby, the curved part can be formed as a shape of the exclusion body after swelling.
- the width of the pressure applying surface in the exclusion body is 5 mm or more.
- the compression direction and the anti-compression direction are the X direction
- one direction orthogonal to the Y direction is the direction orthogonal to the X direction and the Y direction Is the Z direction
- the width of the surface of the YZ plane (pressure applying surface) of the exclusion body is preferably 5 mm or more.
- the thickness of the extrudate body (the width of the pressure application surface) is as thin as 1 mm, there is almost no difference in swelling time between the surface side to which water is applied and the back side, so it is difficult to determine which is overhanging / depressing, as described above. If the thickness is 5 mm or more, there is a difference in swelling time. Therefore, the bending direction can be controlled depending on which surface the user applies moisture to. If it can be controlled in this way, the operability will be improved and the usability at the time of surgery will be good.
- the exclusion body has a rod shape in a compressed state, the longitudinal direction is the Z direction, one direction orthogonal to the Z direction is the X direction, and the direction orthogonal to the Z direction and the X direction is the Y direction.
- the rod-shaped exclusion body has a quadrangular cross section (XY plane) in a direction orthogonal to the Z direction, the X direction and the Y direction are side surfaces, and the expansion stress is at least the X direction. It is preferable that the expansion stress is higher in the central portion than in the both end portions of the rod-shaped exclusion body (hereinafter, this may be referred to as mode [1]).
- the bar-shaped exclusion body having a square cross-section has a flat plate shape whose center portion is widened by swelling (see, for example, FIG. 3C described later).
- the end portion is used as a forceps. It is easy to move and rotate the position of the exclusion body by gripping with, and the operability of the exclusion body in the body cavity is improved.
- the end portion is small, it can be pushed into a narrow gap between organs to fix the exclusion body.
- the organs outside the target are evacuated to the front with the evacuation body, the forceps, a scalpel, etc. reach the operative field so as to cross over the evacuation body from both ends of the evacuation body.
- the organ can be firmly covered with the central portion, and the forceps can be operated from a narrow end portion. It can be located in the field, and the workability in the operation is good.
- the cross section (XY plane) of the rod-shaped exclusion body in a compression-formed state is smaller than the cross-section of the trocar's cylinder, it is inserted into the body cavity through the trocar's cylinder. it can. And it becomes the magnitude
- the welded portion is provided from both one end portion to the other end portion on both pressure applying surfaces when compression-formed in the rod-shaped exclusion body body (
- this may be referred to as embodiment [1 ′]).
- the rod-shaped exclusion body when swollen, becomes a plate having a wider central portion than both ends thereof, and is pulled by the welded portion, and the boat bottom as a whole. (See, for example, FIGS. 3A and 3B described later). And if it is such a ship bottom shape, it can exclude well, covering a non-target organ. Moreover, by taking a boat-bottom-shaped three-dimensional structure, while maintaining good elasticity, the shape-retaining ability of the entire exclusion body is increased, and the stability is excellent. Such a stable retraction body makes it easier to perform operations during surgery and leads to a reduction in operation time.
- the surgical retraction body According to the surgical retraction body according to the present invention, it can be stored compactly during storage, or can be inserted from a trocar in an endoscopic operation, but it can be used in an operation. At this time, it can be enlarged to a shape different from that before the swelling (compressed state) by swelling. Therefore, it is possible to configure the surgical retraction body after swelling into a desired shape without being bound by the shape before swelling.
- FIG. 1 It is a perspective view which shows the surgical exclusion body which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which accommodated the exclusion body of Embodiment 1 in the frame.
- (A) is a perspective view showing the swollen state of the surgical retraction body according to the first embodiment
- (b) is a cross-sectional view taken along the DD line shown in (a)
- (c) is only the main body of the retraction body.
- FIG. 1 shows the surgical exclusion body which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which accommodated the exclusion body of Embodiment 1 in the frame.
- (A) is a perspective view showing the swollen state of the surgical retraction body according to
- FIG. 2 is a perspective view showing a method (part 1) for manufacturing the exclusion body according to the first embodiment, wherein (a) to (e) are steps from a block-like cellulose sponge to a rod-like endoscope exclusion body.
- FIG. 3 is a perspective view showing a method (part 2) for manufacturing the extrudate of the first embodiment, wherein (a) to (f) are steps from a block-shaped cellulose sponge to a rod-shaped endoscopic extrudate.
- FIG. (A) is a perspective view showing 1 process in the method (the 1) which manufactures the surgical exclusion body of Embodiment 2
- (b) is a perspective view showing this next process
- (c) is this next process FIG.
- FIG. 10 is a perspective view showing a surgical extruding body according to the second embodiment which is a process.
- FIG. 6 is a perspective view showing a method (part 2) for producing the surgical retraction body of the second embodiment, and (a) to (c) are process diagrams.
- (A) is a perspective view which shows the surgical exclusion body which concerns on Embodiment 3 of this invention,
- (b) is a top view showing the state which this exclusion body was swollen.
- FIG. 9 is a perspective view showing a method for manufacturing the surgical retraction body according to the third embodiment, in which (a) to (e) show each step.
- (A) is a perspective view which shows the surgical exclusion body which concerns on Embodiment 4 of this invention, (b) is a perspective view showing the state which this exclusion body was swollen, (c) is only the exclusion body of this exclusion body It is a top view showing a form when swollen.
- (A) is a perspective view which shows the surgical exclusion body which concerns on Embodiment 5 of this invention, (b) is a top view showing a form when this exclusion body is swollen.
- (A) is a perspective view which shows the surgical exclusion body which concerns on Embodiment 6 of this invention, (b) is a perspective view showing a form when this exclusion body 20 is swollen, (c) is the exclusion in this exclusion body It is a perspective view showing the form before compressing and forming a body main body.
- (A) is a perspective view which shows the surgical exclusion body which concerns on Embodiment 7 of this invention,
- (b) is a perspective view showing a form when this exclusion body is swollen.
- FIG. 1 is a perspective view showing a surgical retraction body 90 according to Embodiment 1 of the present invention.
- This exclusion body 90 is for endoscopic surgery, and comprises an exclusion body main body 91 and a welded portion 92 welded thereto.
- the extrudate body 91 is made of cellulose sponge and is a rod-shaped body (8 mm ⁇ 8 mm ⁇ 200 mm) having a square section with the extrusion direction in the cellulose sponge manufacturing process as the longitudinal direction (Z direction) (in the drawing, the longitudinal direction is shown for convenience. It is drawn short).
- Z direction the longitudinal direction
- One direction orthogonal to the Z direction is defined as the X direction
- the direction orthogonal to the Z direction and the X direction is defined as the Y direction.
- the exclusion body 91 is compressed (arrow A) and dried from the side surfaces 91b, 91d on the YZ plane with an average compression rate of 10%. Therefore, the expansion stress remains in the X direction.
- the side surfaces 91b and 91d are the above-mentioned “pressure applying surfaces”.
- this expansion stress is higher (stronger) in the central portion C than in the both end portions E of the exclusion body 91.
- the welded portion 92 is made of a thermoplastic resin containing an X-ray non-transparent material (for example, barium sulfate).
- an X-ray non-transparent material for example, barium sulfate.
- Specific examples include polypropylene resins kneaded with barium sulfate, vinyl chloride resins kneaded with barium sulfate, and silicon resins.
- the weld portion 92 is formed in a linear shape along the longitudinal direction (Z direction) on the side surfaces 91b and 91d (pressure applying surface) of the exclusion body 91. Further, the side surfaces 91b and 91d are located at the center of the width (Y direction).
- the exclusion body 90 can be inserted into a body cavity from a trocar having a cylindrical lumen cross-sectional size of 12 mm in diameter (the lumen is a perfect circle).
- the exclusion body 91 swells and becomes larger when moisture is applied, it may absorb the surrounding moisture before use, for example, at the sterilization stage or storage stage, and may expand somewhat. . If this expansion occurs excessively, there is a concern that the body of the exclusion body becomes larger than the trocar cylindrical lumen and cannot be inserted into the trocar.
- reference numeral 97 denotes a tongue provided so as to protrude on one side in the longitudinal direction of the frame body 93. By pulling up the tongue 97 upward (arrow G), the exclusion body 90 is lifted, and the exclusion body 90 can be easily taken out from the frame 93.
- the retraction body 90 is taken out from the frame 93 and inserted into a body cavity from a trocar tube. Next, physiological saline or the like is applied to the extruding body 90 to swell, thereby excluding the non-target organ.
- FIG. 3A is a perspective view illustrating a state in which the surgical retraction body 90 according to the first embodiment is swollen
- FIG. 3B is a cross-sectional view taken along line DD shown in FIG. is there.
- FIG. 3C is a plan view showing a swollen state of only the exclusion body main body 91 (without the welded portion 92).
- the shape shown in FIG. 3C is the same as the shape before the compression body main body 91 is compressed in the manufacturing process. However, stress remains in the process of compression, storage, swelling, etc., and it may not be completely the same, but it can be restored to almost the same shape.
- the exclusion body 90 With the application of water (such as physiological saline), the exclusion body 90 swells greatly in the X direction in the central portion C having a high expansion stress and small in both end portions E having a low expansion stress (FIGS. 1 and 3). (A), (c)). Accordingly, when the welded portion 92 is not provided on the relieving body 90 (in the case of only the relieving body 91), the width of the central portion is wide (W 2 ) as shown in FIG. A flat (W 1 ) state is obtained.
- the white arrow F shown in FIG.3 (c) is the compression direction in a manufacture process.
- the pressure exciter 90 of the first embodiment is provided with a welded portion 92, and the welded portion 92 does not expand (does not expand) when moisture is applied. Acts as follows. For this reason, the side surfaces 91b and 91d come to be pulled, and the center is sufficiently swollen, so that it is curved into a boat shape as shown in FIGS. 3 (a) and 3 (b).
- FIG. 4 is an explanatory diagram showing a state in which the surgical field 62 is widened by excluding the intestine 61 (external target organ) by the exclusion body 90 according to the first embodiment.
- the extrudate 90 is curved in the shape of a boat bottom, it can be excreted well so as to wrap the intestine 61.
- the cellulose sponge (water-swellable material), which is the material of the exclusion body 90 of the exclusion body 90, exhibits an appropriate repulsive force due to swelling and has a certain amount of weight, so that the non-target organ can be effectively eliminated. it can.
- the swollen cellulose sponge is soft, it can be bent freely, is easy to handle, and can be gently evacuated to an organ outside the target.
- the end portion E of the exclusion body 90 is narrow, it is easy to grasp and operate the end portion E, and in addition, the small end portion E can be sandwiched between organs. Further, as shown in FIG. 4, the first forceps 63 and the second forceps 64 can be inserted over the place where the end portion E of the exclusion body 90 is low and the operation field 62 can be operated. Therefore, the exclusion body 90 hardly disturbs the surgical operation.
- barium sulfate is contained in the welded portion 92, the presence or absence of the exclusion body 90 can be confirmed by performing X-ray contrast (X-ray imaging) and using the welded portion 92 as a clue.
- test method was performed according to the 5.1.1 dropping method of the water absorption rate test of JIS L 1907 5.1. Specifically, five test pieces having a size of 30 mm ⁇ 30 mm were collected from the sample (test pieces No. 1 to 5) and adjusted so that the height from the surface of the test piece to the tip of the burette was 10 mm. Then, 1 drop of 65% sugar water was dropped from the burette, and the time (seconds) from when the water drop reached the surface of the test piece until the water drop did not reflect specially was measured with a stopwatch.
- Table 1 shows the results of this water absorption rate test. As a control, the same test was performed using gauze as a sample.
- the water absorption amount of the cellulose sponge was tested in accordance with Ministry of Health and Welfare Notification No. 285, Sanitary Treatment Products Standard III Standard and Test Method (5) Water absorption amount. Specifically, a surgical extrudate product is taken as a sample (Sample Nos. 6 to 10) and placed on a 1.680 ⁇ m (10 mesh) wire net of known mass, and water is gently removed from the beaker over the entire surface. The sample was completely absorbed by water, continued to be poured until the water overflowed, and allowed to stand for 1 minute, and then the amount of water absorption was measured. The test results are shown in Table 2.
- the test method is such that the side surface 91a or the side surface 91c (surface on which the welded portion 92 is not provided) of the extruding body 90 is placed on the table, water is added from above to swell, and the bending direction is visually observed. confirmed.
- Ten samples (Sample Nos. 11 to 20) were tested. The results are shown in Table 3.
- FIG. 5 is a perspective view showing a process from obtaining a block-shaped cellulose sponge to obtaining an endoscope exclusion body.
- the cellulose sponge that is the raw material of the extrudate body 91 can be manufactured by a regenerated cellulose method or a cellulose solvent solution method.
- a cellulose sponge disclosed in Japanese Patent No. 3520511 can be mentioned.
- a cellulose sponge production method is exemplified.
- viscose is obtained from cellulose raw materials such as wood chips. Natural fiber is added to this viscose, and further crystal mirabilite, a polyol compound, and an appropriate surfactant are mixed.
- the obtained sponge stock solution is extruded and filled into a mold and heated and solidified to obtain a block-like cellulose sponge (FIG. 5 (a), arrow B in the figure is the extrusion direction).
- the block-like cellulose sponge 11 thus obtained is cut out so that both ends are narrowed in the X direction as shown in FIG. 5B (cutout block 12).
- the film is dried while being compressed from the X direction (this compression direction is the direction of arrow A in FIG. 1) to form a flat plate (FIG. 5C).
- compression may be performed from the Y direction or the Z direction. When compressed from the Y and Z directions, it expands in the Y and Z directions due to the application of moisture.
- this flat plate 13 is sliced in the Z direction to produce a plurality of rod-shaped (cross-sectional square) exclusion body bodies 91 (FIG. 5D).
- contrast thread 14 a multifilament in which barium sulfate is kneaded into a polypropylene resin is prepared, and this is bundled into a thread shape (this is referred to as contrast thread 14).
- the contrast yarn 14 is arranged on the both sides of the compression surface (pressure applying surface) of the exclusion body 91 in the center of the width (Y direction center) along the longitudinal direction (Z direction), and heat-pressed to thereby form the contrast yarn. 14 is welded to form a welded portion 92 (FIGS. 5E and 1).
- FIG. 5 eight exclusion bodies 90 are obtained, but only one exclusion body 90 is shown in FIG. 5 (e).
- FIG. 6 is a perspective view showing a method (part 2) for manufacturing the exclusion body 90 of the first embodiment, and (a) to (f) are perspective views showing the respective steps.
- a predetermined number (8 in the illustrated example) of contrast threads 14 are arranged in the Z direction on both sides of the compression surface (pressure-applying surface) of the flat plate 13 with an interval. To do. Then, the contrast yarn 14 is welded by thermocompression bonding, and a welded portion 92 is formed.
- the plate-like object 13 is cut at a location between the welded portions 92 (FIG. 6E) to obtain a plurality of rod-like (cross-sectional square) exclusion bodies 90 (FIG. 6F [one here Only the extruding body 90 is shown], FIG. 1).
- FIG. 7 is a perspective view which shows the surgical exclusion body 80 which concerns on Embodiment 2 of this invention.
- the welding part 92 showed what is located in the center of the width
- the welded portion 82 is disposed near the edge on the side surface of the excluding body main body 91.
- the direction of recessing in the boat bottom shape is controlled depending on which of the side surfaces 91a and 91c the moisture application side is used, but the side surfaces 91b and 91d provided with welded portions.
- the direction of depression on the bottom of the boat is not determined in advance in which direction of the Y direction, and it is recessed in one direction due to a subtle difference when swollen.
- the welded portion 82 is biased in the side surfaces 91b and 91d, so that the direction where the welded portion 82 exists is pulled more. , It will dent on the opposite side.
- FIGS. 7A and 7B are perspective views showing each step in the method (part 1) for manufacturing the exclusion body 80 of the second embodiment
- FIG. 7C is a perspective view showing the completed exclusion body 80.
- FIG. It is.
- a predetermined number of contrast threads 14 are arranged at intervals in the Z direction on both sides of the compression surface (pressure applying surface) of the flat plate 13. At this time, the contrast thread 14 is positioned so as to be near the cutting position in consideration of the position to be cut into a rod shape in the subsequent process.
- the contrast yarn 14 is welded by thermocompression bonding to form a welded portion 82.
- FIG. 8 is a perspective view showing a method (part 2) for manufacturing the exclusion body 80 of the second embodiment, and (a) to (c) show each step.
- the center of the welded portion 82 and the space between the welded portions 82 are cut.
- the welded portion 82 is divided into two parts and arranged on the respective exclusion bodies 80 (FIG. 8C).
- the welded portion 82 is divided into two parts and arranged on the respective exclusion bodies 80 (FIG. 8C).
- FIG. 8C In the example of FIG. 8, eight exclusion bodies 80 are obtained, but in FIG. 8C, only four exclusion bodies 80 are shown. In this way, a plurality of rod-shaped (square cross-section) exclusion bodies 80 are obtained.
- FIG. 9A is a perspective view showing a surgical exclusion body 70 according to Embodiment 3 of the present invention
- FIG. 9B is a plan view showing a state in which the exclusion body 70 is swollen.
- the exclusion body 70 of Embodiment 3 is composed only of an exclusion body main body 71 made of cellulose sponge and does not have a welded portion.
- the descending colon can be fitted into the notch 73, and the upper colon and small intestine can be excreted.
- the swollen shape can be changed to a deformed shape according to the operation, it is rod-shaped as a state before swelling, so it can be stored compactly during storage and can be inserted from a trocar. It can also be used as a shape-exclusion body for an endoscope.
- FIG. 10 is a perspective view showing a manufacturing method of the exclusion body 70 of the third embodiment, and (a) to (e) show the respective steps.
- the process of producing the block-shaped cellulose sponge 11 which is a raw material is the same as the process of FIG. 5A described above (FIG. 10A).
- the cellulose sponge 11 is cut out so as to form a recess 19 (cutout block 18). Subsequently, it dries while compressing from the X direction to form a flat plate (flat plate 13) (FIG. 10C).
- the plate-like object 13 is sliced in the Z direction (FIG. 10 (d)), and a plurality of rod-shaped exclusion body main bodies 71 (rejection bodies). 70) is obtained (FIG. 10 (e)).
- FIG. 11A and 11B are views showing a surgical exclusion body 40 according to Embodiment 4 of the present invention.
- FIG. 11A is a perspective view of the exclusion body 40
- FIG. 11B shows a form when the exclusion body 40 is swollen.
- FIG. 11C is a plan view showing a form when only the exclusion body main body 41 of the exclusion body 40 is swollen, but the position of the weld portion 42 is also drawn for easy understanding.
- the white arrow F shown in FIG.11 (c) is the compression direction at the time of compression formation.
- This extruding body 40 has an extruding body main body 41 at the time of swelling having a single trapezoidal shape with a top portion of a right triangle cut out (FIG. 11C), and a weld portion 42 is provided on this side. Therefore, when it swells, it will be restrained by this welding part 42 and will curve (FIG.11 (b)).
- FIG. 12A and 12B are views showing a surgical exclusion body 50 according to Embodiment 5 of the present invention, in which FIG. 12A is a perspective view of the exclusion body 50, and FIG. 12B shows a form when the exclusion body 50 is swollen.
- FIG. 12A is a perspective view of the exclusion body 50
- FIG. 12B shows a form when the exclusion body 50 is swollen.
- FIG. 12 (b) is a compression direction at the time of compression formation.
- a welded portion 52 is provided on a side surface of the bowl-shaped exclusion body 51. And when it swells, it curves into a bowl shape with two depressions.
- FIG. 13A and 13B are views showing a surgical exclusion body 20 according to Embodiment 6 of the present invention.
- FIG. 13A is a perspective view of the exclusion body 20, and
- FIG. 13B shows a form when the exclusion body 20 is swollen.
- FIG. (C) of FIG. 13 is a perspective view showing the form before compressing the exclusion body main body 21 in this exclusion body 20.
- the white arrow F shown to Fig.13 (a), (c) is the compression direction at the time of compression formation.
- the disk-shaped exclusion body 21 is compressed from the peripheral side surface (in the direction of arrow F and X in FIG. 13C), and the welded portions 22 are provided on both sides of the pressure application surface at this time. (FIG. 13A).
- the evacuated body 20 swells, it is regulated by the welded portion 22 and thus bends into a deeply depressed boat shape (FIG. 13B).
- FIG. 14A is a perspective view showing a surgical exclusion body 30 according to Embodiment 7 of the present invention
- FIG. 14B is a perspective view showing a form when the exclusion body 30 is swollen. It is.
- the exclusion body 30 of Embodiment 7 is not provided with a welding part, and consists only of a cellulose sponge exclusion body. Then, the disk shape before swelling (FIG. 14A) becomes a star shape having six protrusions due to swelling (FIG. 14B).
- cellulose sponge is used as the material of the exclusion body, but the material is not limited to this, and water-swellable material such as polyvinyl alcohol and polyurethane may be used.
- the welded portion may be provided only on one side in the compression direction.
- the shape of the welded portion is not limited to a linear shape as shown in the above embodiment, and may be a linear shape such as an arc, a zigzag, or a waveform. Further, the welded portion is not limited to a linear shape.
- the rod-like material is mentioned in the above-described Embodiments 1 to 6 as the shape of the exclusion body before swelling, it is not limited to this.
- the shape of the extruding body before swelling may be a spherical shape, and may be configured to swell so that the protruding portion protrudes into a confetti shape by applying moisture. Any of the later ones can have various shapes.
- the present invention can be used for various operations such as endoscopic surgery and open surgery (including thoracotomy).
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Abstract
Description
図1は本発明の実施形態1に係る手術用圧排体90を示す斜視図である。
実施形態1での圧排体本体91の材料であるセルローススポンジの吸水速度について、下記の如く試験を行った。
実施形態1の圧排体90について、膨潤した際の湾曲方向について確認試験を行った。
次に実施形態1の圧排体90を製造する方法について述べる。図5は、ブロック状のセルローススポンジから内視鏡用圧排体を得るまでの工程を表した斜視図である。
図6は、実施形態1の圧排体90を製造する方法(その2)を表す斜視図であり、(a)~(f)はその各工程を表した斜視図である。
図7の(c)は本発明の実施形態2に係る手術用圧排体80を示す斜視図である。
図7の(a),(b)は、実施形態2の圧排体80を製造する方法(その1)における各工程を表す斜視図であり、(c)は完成した圧排体80を表す斜視図である。
図8は、実施形態2の圧排体80を製造する方法(その2)を表す斜視図であり、その(a)~(c)は各工程を表す。
図9の(a)は、本発明の実施形態3に係る手術用圧排体70を示す斜視図で、図9の(b)はこの圧排体70を膨潤させた状態を表す平面図である。
図10は、実施形態3の圧排体70の製造方法を示す斜視図であり、その(a)~(e)はその各工程を表す。
図11は本発明の実施形態4に係る手術用圧排体40を示す図であり、(a)は該圧排体40の斜視図、(b)は該圧排体40を膨潤させたときの形態を表す斜視図である。図11(c)はこの圧排体40の圧排体本体41のみを膨潤させたときの形態を表す平面図であるが、理解を容易にするため、溶着部42の位置を併せて描いている。また図11(c)に示す白抜き矢印Fは、圧縮形成時における圧縮方向である。
21,41,51,71,91 圧排体本体
22,42,52,72,82,92 溶着部
61 腸
62 術野
63 第1鉗子
64 第2鉗子
91a,91b,91c,91d 側面
Claims (5)
- 手術に際して体内に挿入される圧排体において、
該圧排体の圧排体本体は、吸水膨張性材料が圧縮形成されることによって反圧縮方向への膨張応力が残留する状態で構成され、且つ前記残留する膨張応力が部位によって異なる値を有するものであることを特徴とする手術用圧排体。 - 前記圧排体は、前記圧排体本体を圧縮形成した際の圧力付与面の少なくとも一方の面に熱可塑性樹脂の溶着部を備え、この溶着部によって前記圧排体本体を拘束するように構成されたものである請求項1に記載の手術用圧排体。
- 前記圧排体本体における前記圧力付与面の幅が5mm以上である請求項2に記載の手術用圧排体。
- 前記圧排体本体は、圧縮形成された状態において棒状であり、
この長手方向をZ方向、該Z方向と直交する1方向をX方向、Z方向及びX方向に直交する方向をY方向としたとき、
前記棒状の圧排体本体が、前記Z方向と直交する方向の断面が四角形であって、前記X方向及び前記Y方向を側面とし、
前記膨張応力が、少なくとも前記X方向に向けて作用し、且つこの膨張応力が、前記棒状の圧排体本体における両端部分に比べて中央部分が高い請求項1~3のいずれか1項に記載の手術用圧排体。 - 前記溶着部が、前記棒状の圧排体本体において圧縮形成した際の両方の圧力付与面に、その一方端部から他方端部にかけて設けられている請求項4に記載の手術用圧排体。
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KR1020127022693A KR20130018667A (ko) | 2010-03-08 | 2011-03-08 | 수술용 압배체 |
CN201180012588.7A CN102791202B (zh) | 2010-03-08 | 2011-03-08 | 手术用压排体 |
JP2012504475A JP5313394B2 (ja) | 2010-03-08 | 2011-03-08 | 手術用圧排体 |
EP11753361.2A EP2545858A4 (en) | 2010-03-08 | 2011-03-08 | SURGICAL SPARKER |
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EP (1) | EP2545858A4 (ja) |
JP (1) | JP5313394B2 (ja) |
KR (1) | KR20130018667A (ja) |
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Cited By (1)
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WO2015178311A1 (ja) * | 2014-05-19 | 2015-11-26 | 東レ・ファインケミカル株式会社 | 圧排体 |
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- 2011-03-08 WO PCT/JP2011/055376 patent/WO2011111703A1/ja active Application Filing
- 2011-03-08 EP EP11753361.2A patent/EP2545858A4/en not_active Withdrawn
- 2011-03-08 JP JP2012504475A patent/JP5313394B2/ja active Active
- 2011-03-08 KR KR1020127022693A patent/KR20130018667A/ko not_active Application Discontinuation
- 2011-03-08 CN CN201180012588.7A patent/CN102791202B/zh active Active
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JPWO2015178311A1 (ja) * | 2014-05-19 | 2017-04-20 | 東レ・ファインケミカル株式会社 | 圧排体 |
Also Published As
Publication number | Publication date |
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EP2545858A4 (en) | 2015-06-24 |
JP5313394B2 (ja) | 2013-10-09 |
CN102791202A (zh) | 2012-11-21 |
KR20130018667A (ko) | 2013-02-25 |
JPWO2011111703A1 (ja) | 2013-06-27 |
CN102791202B (zh) | 2015-05-27 |
EP2545858A1 (en) | 2013-01-16 |
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