WO2016038981A1 - 医療用鈎 - Google Patents
医療用鈎 Download PDFInfo
- Publication number
- WO2016038981A1 WO2016038981A1 PCT/JP2015/068331 JP2015068331W WO2016038981A1 WO 2016038981 A1 WO2016038981 A1 WO 2016038981A1 JP 2015068331 W JP2015068331 W JP 2015068331W WO 2016038981 A1 WO2016038981 A1 WO 2016038981A1
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- WIPO (PCT)
- Prior art keywords
- medical
- resin
- trunk
- light
- resin functional
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/32—Devices for opening or enlarging the visual field, e.g. of a tube of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/0046—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/0046—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable
- A61B2017/00473—Distal part, e.g. tip or head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00681—Aspects not otherwise provided for
- A61B2017/00734—Aspects not otherwise provided for battery operated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00831—Material properties
- A61B2017/00902—Material properties transparent or translucent
- A61B2017/00907—Material properties transparent or translucent for light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/304—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using chemi-luminescent materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/306—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using optical fibres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/308—Lamp handles
Definitions
- the present invention relates to a medical bag.
- Steel accessories are surgical instruments made of metal such as stainless steel such as tweezers, needle holders, scalpels, scissors, forceps, retractors, sharps, sharps, etc. There are hundreds of variations in the shape and size of the climb and tip. These steel accessories have advantages and disadvantages because they are metals.
- one of the steel retractors is a device called a spear that hooks and pulls the surrounding tissue with a hook-shaped part at the tip to make it easier to see the center of the surgical field.
- a spear that hooks and pulls the surrounding tissue with a hook-shaped part at the tip to make it easier to see the center of the surgical field.
- metal cages are heavy and burden the user's hand, they cannot be made in large sizes because they are heavy, and they produce flashes under high-level lighting due to reflection, thermal conductivity
- heat is likely to be absorbed rapidly from the tissue in contact with the tissue, and heat shock may occur due to the high cost, and that the cost of the soot stock in the hospital equipment tends to be insufficient.
- Patent Document 1 in order to solve the problem of such a steel accessory, a blade integrally formed from a resilient and strong plastic material having a non-reflective surface, a handle, and a handle are mutually attached to the blade.
- Surgical tractors have been proposed that consist of components with mating shanks.
- Patent Document 2 points out problems caused by problems such as insufficient illumination in the surgical field and reflection of illumination.
- Patent Document 2 in order to solve such an illumination problem, a light source is mounted on a detachable handle portion of the retractor, and light incident from an incident port provided in a portion near the handle of the retractor is detected.
- a medical retractor irradiation system has been proposed that fires through a light guide in the vessel towards a surgical field that is near the blade portion far from the handle.
- steel accessories have various problems in addition to the problems described above.
- the instrument when a medical surgical instrument is arranged around the operative field, the instrument may block the periphery of the operative field to reduce visibility and hinder surgery. More specifically, the surgical site in the deep part of the human body may change the degree of retraction between the superficial tissue and the deep tissue, and the first retractor that pulls the superficial tissue and the deep tissue Use with a second retractor. At this time, there is a possibility that the second retractor shields the tissue opened by the first retractor, which contributes to a decrease in the visibility of the surgical field.
- the problem relating to the visibility of the surgical field may become more prominent in the plastic retractor described in Patent Document 1 than the metal retractor.
- plastics are less strong than metals, so plastic retractors tend to be larger in size to achieve the same strength as steel, and when using metal retractors. This is because the visibility of the operative field is likely to be reduced.
- the present invention has been made in view of the above problems, and provides a medical scissors that can ensure visibility around the operative field while realizing a scissors lighter than conventional steel scissors.
- the purpose is to do. More desirably, the object is to improve the visibility around the operative field as compared with a conventional steel scissors.
- One aspect of the present invention includes a gripping portion and a resin functional portion formed of a transparent resin and extending from the gripping portion, and the resin functional portion includes a trunk portion having a proximal end connected to the gripping portion. And a resin-like functional part configured to allow the affected part facing the abdominal surface to be seen through from the back side. It is a spear.
- the gripping part incorporates a light source that emits light by a power source, and the light from the light source is incident from the proximal end of the trunk part and emits light toward the bowl-shaped part.
- a light source that emits light by a power source
- the light from the light source is incident from the proximal end of the trunk part and emits light toward the bowl-shaped part.
- the light that enters the proximal end of the trunk of the light source of the gripping part is emitted from the tip or corner of the scissors or the like to irradiate the surrounding affected part, and the light travels.
- Leakage light is also generated from the wall surface parallel to the direction, and visibility when the affected tissue facing such a wall surface (abdominal surface) is viewed from the opposite wall surface (back surface) side is large. improves. Thereby, the visibility of the operative field is further improved as compared with the conventional art.
- the communication path between the fixing hole in which the resin functional portion is fixed and the storage space in which the light source is stored is sealed with a sealing material. It is characterized by.
- the resin functional part has a layer structure laminated so as to have a layer boundary along the extending direction of the trunk part.
- the light incident on the resin functional part from the light source is less likely to leak to the outside due to the confinement effect between the layer boundaries, and reaches the scissor-like part extending from the tip of the trunk.
- the amount of light can be increased.
- the light leaked to the ventral side is ensured to be equal to or better than that of the resin functional part not having the layer structure, and the back surface due to the leaked light It is not necessary to reduce the visibility improvement effect.
- the resin functional part is characterized in that the abdominal surface and the back surface are each formed as a flat surface.
- the abdominal surface and the back surface of the resin functional part are each formed flat, so that the visibility of the affected part facing the abdominal surface from the back side is good, and the actual size is visible. Can do.
- the resin functional part is characterized in that at least one of the abdominal surface and the back surface has a convex lens shape.
- the affected part facing the abdominal surface from the back side is viewed in an enlarged state, the affected part tissue is further secured while ensuring visibility from the back side of the affected part facing the abdominal surface of the resin functional part. The details of can be visually confirmed.
- One aspect of the present invention is characterized in that at least one of water repellent processing and oil repellent processing is applied to the surface of the resin functional part.
- One of the selective aspects of the present invention is characterized in that a part of the bowl-shaped portion is a phosphorescent material.
- a medical scissor it is possible to emit a part of the medical scissor without a light source, and even when the light source is provided,
- the phosphorescent material emits light for a certain period of time, and a certain degree of field of view can be maintained in the operative field.
- One of the selective aspects of the present invention is characterized by having a prism structure that causes light to be refracted at a bent portion between the trunk portion and the bowl-shaped portion.
- the light that has traveled through the trunk is likely to travel to the scissors without being emitted to the outside at the bend, so the amount of light irradiated to the peripheral surgical field of the scissors is increased.
- the backside visibility can be improved because the leakage light from the bowl-shaped portion also increases.
- a reflective portion is formed along the outer peripheral surface of the bent portion between the trunk portion and the bowl-shaped portion.
- the light that has traveled through the trunk is likely to travel to the scissors without being emitted to the outside at the bend, so the amount of light irradiated to the peripheral surgical field of the scissors is increased.
- the backside visibility can be improved because the leakage light from the bowl-shaped portion also increases.
- a finger hook structure that protrudes laterally from the side surface of the gripping portion is provided symmetrically.
- Such a medical scissor can reduce the burden on the doctor and the assistant in the traction of the tissue using the medical scissors.
- the resin functional part has a ridge extending along the back surface to the ridge-shaped part, and the ridge in the ridge-shaped part is the trunk part. It is characterized in that it is formed to have a wider width and a smaller protruding height than the protruding ridge.
- the medical bag described above includes various modes such as being implemented in a state where it is incorporated in another device or being implemented together with another method.
- the present invention it is possible to realize a medical scissor that can ensure visibility around the operative field while realizing a scissors that are lighter than conventional steel scissors. That is, according to the medical scissors according to the present invention, it is possible to visually recognize the affected part facing the abdominal surface side through the scissors-like part. The affected part can also be visually recognized, and the visibility of the operative field can be greatly improved as compared with the conventional case.
- the affected part facing the abdominal surface side of the trunk can also be visually confirmed, the first heel that pulls the tissue on the surface layer side and the second heel that pulls the tissue on the back layer side are used in combination. Even in such a case, the tissue pulled by the first scissors and located on the back side of the second scissors can be visually recognized through the trunk of the second scissors. As compared with the above, it can be improved.
- the light that is incident on the proximal end of the trunk of the light source of the gripping part is emitted from the distal end or corner of the saddle-like part to irradiate the surrounding affected part, as well as the progress of the light Leakage light is also generated from the wall surface parallel to the direction, and visibility when the affected tissue facing such a wall surface (abdominal surface) is viewed from the opposite wall surface (back surface) side is large. improves. Thereby, the visibility of the operative field is further improved as compared with the conventional art.
- the liquid (body fluid, chemical solution, etc.) that may adhere to the connection part between the grip part and the resin function part during the operation is connected to the connection part. It is possible to prevent the possibility of intrusion into the grip portion from the gap. Thereby, it is possible to eliminate the possibility that the light emission intensity of the light source is reduced or the internal electric system is short-circuited.
- the light incident on the resin functional part from the light source is hardly leaked to the outside due to the confinement effect between the layer boundaries, and the tip of the trunk part It is possible to increase the amount of light reaching the bowl-shaped portion extending from the base. Also, by selecting a direction substantially orthogonal to the ventral surface of the resin functional part as the layer boundary direction, the light leaked to the ventral side is ensured to be equal to or better than that of the resin functional part not having the layer structure, and the back surface due to the leaked light It is not necessary to reduce the visibility improvement effect.
- a part of the medical scissor can be made to emit light even without a light source.
- the phosphorescent material emits light for a certain period of time, and a certain degree of field of view can be maintained in the operative field.
- the light that has traveled through the trunk portion is likely to travel to the scissor portion without being emitted to the outside at the bent portion. Since the amount of light applied to the peripheral surgical field increases and the amount of light leaked from the saddle-like portion also increases, the back surface visibility can be improved.
- the light that has traveled through the trunk portion is likely to travel to the scissor portion without being emitted to the outside at the bent portion. Since the amount of light applied to the peripheral surgical field increases and the amount of light leaked from the saddle-like portion also increases, the back surface visibility can be improved.
- the strength of the medical scissors is reinforced by the rib structure using the protrusions, so that even a resin having a rigidity lower than that of metal has sufficient rigidity. Can be secured.
- the protrusion formed on the saddle portion close to the surgical target site has a small protrusion height, the protrusion is shielded from being shielded as much as possible, and is formed wider. It is possible to ensure a certain degree of backside visibility through the screen.
- FIG. 1 is a perspective view of a medical scissor 1
- FIG. 2 is a side view and a cross-section of the medical scissor 1
- FIG. 3 is a perspective view of a state in which a connecting portion of the medical scissor 1 is disassembled
- FIG. 4 shows a cross section of the gripping portion of the medical scissors 1.
- tissue to be operated and a site that a doctor needs to visually recognize in relation to the operation during the operation are referred to as an “affected area”, and an “affected area” area is referred to as an “operative field”.
- the medical scissors 1 are provided with a grip portion 10 for a practitioner such as a doctor or an assistant, and a resin function portion 20 that is connected and fixed to the tip of the grip portion 10.
- the gripping part 10 has an accommodating space 11 in which the light source 12 and its power source 13 are accommodated and fixed.
- the material and shape of the grip 10 are not particularly limited, the grip 10 can be made of a lightweight resin or metal and can be formed into an outer shape that can be gripped by the user to obtain a good grip.
- the surface of the grip portion 10 can be further improved in grip properties by, for example, attaching an anti-slip sheet or applying an anti-slip process.
- the connecting part 50 between the gripping part 10 and the resin functional part 20 is provided with a step that decreases in diameter from the gripping part 10 side to the resin functional part 20, etc.
- the vicinity of the center in the longitudinal direction of 10 may be bulged to improve grip.
- the light source 12 various types of light that can be accommodated in the accommodating space 11 can be adopted, and for example, an LED (Light Emitting Diode), a small semiconductor laser, or the like can be adopted.
- the light source 12 is preferably lightweight.
- the light source 12 is fixed to the distal end side of the grip portion 10 (the base end of the resin function portion 20) with the light emitting surface facing.
- the power source 13 can employ various types of batteries that can be accommodated in the accommodating space 11. Therefore, regarding the shape of AA batteries / AA batteries / button cells, rechargeable / non-rechargeable, and electrode materials such as manganese / lithium ion / hydrogen, etc. It does not restrict
- the storage space 11 may be provided with an opening / closing portion so that the power supply 13 and the light source 12 can be replaced.
- the light source 12 and the power source 13 are incorporated in the gripping unit 10, but the power source 13 or both the light source 12 and the power source 13 may not be built in the gripping unit 10.
- the power source 13 may be an external power source, and the light source 12 built in the accommodation space 11 and the external power source 13 may be connected by a power supply line.
- both the light source 12 and the power source 13 may be externalized, and the light emitted from the light source 12 may be guided to the base end portion of the resin functional unit 20 by a light guide member such as an optical fiber.
- the tip of the gripping part 10 and the resin functional part 20 are fixed and integrated with each other so as to be removable by the connecting part 50.
- the distal end of the grip portion 10 and the base end of the resin functional portion 20 are fixed by fastening a female screw structure and a male screw structure. Accordingly, it is possible to release the fastening of the gripping part 10 and the resin function part 20 and replace and fix the resin function part 20 to a new one, or to replace and fix the resin function part of another shape to the gripping part 10.
- a transparent partition wall structure or a sealing structure for preventing liquid (body fluid, chemical liquid, etc.) from entering the storage space 11 from the outside of the connection part 50 is provided.
- the transparent partition wall structure is produced by fitting a glass material, a transparent resin material, or the like and fixing or bonding and fixing, or integrally molding the transparent resin material with the grip portion 10.
- a sealing material such as an O-ring that is sandwiched between the distal end of the grip portion 10 and the proximal end of the resin functional portion 20. The communication path is sealed by
- the resin functional unit 20 includes a trunk 30 in which the base end 30A is connected and fixed to the gripping part 10, and a hook-like part 40 that is bent and extended in a hook shape from the distal end 30B of the trunk 30.
- the affected part facing the abdominal surface 34 is configured to be seen through from the back 31 side.
- the resin functional part 20 is a smooth surface with no corners on the surface, and is formed of a resin material having translucency. For this reason, the affected part facing the abdominal surfaces 34 and 44 can be seen through from the rear surfaces 31 and 41 side.
- resin functional unit 20 As the material of the resin functional unit 20, various resin materials suitable for medical use can be adopted. For example, polyethylene, polypropylene, polyethylene terephthalate, vinyl chloride, polystyrene, ABS, acrylic, polyamide (nylon), polycarbonate And polyacetal.
- the resin material has internal strain due to residual internal stress, it is desirable to release the residual internal stress by annealing treatment or the like.
- the surface shape is changed by annealing treatment, surface polishing, formation of a transparent paint film that forms a smooth surface while entering the irregularities, etc. It is desirable to have a smooth surface.
- the surface of the resin functional unit 20 may be subjected to water repellency / oil repellency.
- water / oil repellent processing include fluororesin processing and silicon resin processing. Applying water / oil repellent treatment to the surface of the resin functional part 20 makes it difficult for liquids such as body fluids to adhere to the surface during surgery, and the back surface visibility through the resin functional part 20 and the light through the resin functional part 20 A reduction in irradiation characteristics can be suppressed as much as possible.
- the water-repellent processing and oil-repellent processing may be performed on the entire resin functional unit 20, but may be limitedly performed on the bowl-shaped portion 40 that is a part to which body fluid or the like is particularly easily attached.
- the trunk portion 30 has a substantially straight rod shape extending from a base end portion 30 ⁇ / b> A fixed to the distal end of the gripping portion 10 toward a bent portion 60 between the trunk portion 30 and the hook-like portion 40. Functions as a support portion that supports the grip portion 10 at a constant distance. Further, the trunk portion 30 also has a function as a light guide for guiding light incident from the base end portion 30A to the bent portion 60, and the light source 12 accommodated in the grip portion 10 enters the base end portion 30A. The light passes through the trunk 30 and is guided to the bent portion 60.
- the trunk 30 radiates a part of the light passing through the inside as leakage light, and irradiates the affected part facing the abdominal surface 34 of the trunk 30 with the leakage light. For this reason, when the trunk part 30 has internal passage light, the back surface visibility through the trunk part 30 improves compared with the case where there is no internal passage light.
- the trunk 30 of the medical heel 1 shown in FIGS. 1 to 4 has a rounded rectangular cross section substantially perpendicular to the longitudinal direction of the trunk 30, and the back surface 31 and the abdominal surface 34 have flat surfaces parallel to each other. is doing. For this reason, the light on the back surface that has passed through the trunk portion 30 is transmitted to the front surface side with a small amount of refraction, so that the back surface visibility is high, and the affected area on the back surface can be viewed in actual size.
- the hook-shaped portion 40 has a pointed shape that is substantially constant in width and gradually becomes thinner as the thickness approaches the tip, and the pointed end has a rounded corner shape. That is, the thickness of each part is adjusted according to the traction stress applied when the medical scissors 1 is used for tissue traction. For this reason, while ensuring the strength of the medical scissors 1, the volume of the part that can enter the surgical field during surgery and become a shield can be reduced as much as possible. Furthermore, in the surgical field, the tip closer to the surgical target site such as incision and suturing is thinner, and the back surface visibility of the saddle-shaped portion 40 increases as it approaches the surgical site.
- the entire abdominal surface 44 that contacts the affected part pulled by the saddle-like part 40 is formed as a flat surface, the burden on the affected part that contacts the saddle-like part 40 can be minimized. Furthermore, since the abdominal surface 44 and the right side surface 42 and the left side surface 43 are formed as a continuous curved surface without corners, the corners do not come into contact with the affected part, and the burden on the affected part with which the saddle-like part 40 comes into contact is further reduced. can do.
- the bent portion 60 maintains the angle between the extending direction of the trunk portion 30 and the extending direction of the hook-shaped portion 40 at approximately 90 °.
- the curvature R can be changed in various ways, for example, 0 to 40 mm. The smaller the curvature R is, the easier the tissue is pulled, and the greater the curvature R is, the more the strength of the bent portion 60 and the light guide efficiency are improved.
- the hook-like portion 40 has a claw-like shape with its tip 45 bent inward. For this reason, the hook performance at the time of tissue traction by the hook-like portion 40 is improved.
- a part of the incident light from the base end portion 30 ⁇ / b> A of the trunk portion 30 is emitted to the outside of the resin functional portion 20 at the bent portion 60, but the rest is reflected by the surface of the bent portion 60 and proceeds to the bowl-shaped portion 40.
- Most of the light traveling in the bowl-shaped portion 40 is emitted from the vicinity of the tip portion 45. That is, since light is emitted from the vicinity of the tip 45 closest to the affected area, the visibility of the affected area is improved.
- emitted as leakage light from side surfaces, such as the back surface 41 and the abdominal surface 44, etc. of the saddle-like part 40 the back surface visibility which visually recognizes the affected part tissue which the saddle-like part 40 has hooked improves from the surface side.
- the resin functional part 20 is made of resin, so that it is lighter than conventional steel scissors and the freedom of shape selection is also increased. Moreover, since electricity is not conducted, there is no possibility that an electric scalpel or the like will come into contact and cause burns to the affected area. And since the resin function part 20 is formed with transparent resin, the visibility of the affected part which passed through the resin function part 20 improves markedly compared with the conventional steel ridge. In addition, since the light is allowed to pass through the resin functional unit 20, the surgical field is illuminated to expand the visual field of the doctor, and the back surface visibility is improved by the leaked light.
- FIG. 5 is a diagram for explaining the shape of the medical scissors 200 according to the present embodiment.
- the medical scissor 200 shown in the figure is the same as the medical scissor 1 according to the first embodiment described above except for the shapes of the trunk 30 of the resin functional unit 20 and the back surface and the abdominal surface of the scissor-shaped portion 40.
- Constituent elements other than the abdominal surface and the back surface of the resin functional unit 20 are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
- the trunk 30 has a substantially elliptical cross-sectional shape that is substantially perpendicular to the longitudinal direction of the trunk 30. Therefore, the trunk portion 30 has a shape in which the back surfaces 231 and 241 and the abdominal surfaces 234 and 244 bulge into convex lens shapes, respectively.
- both the back surfaces 231 and 241 and the abdominal surfaces 234 and 244 are formed in a convex lens shape, but one of the back surfaces 231 and 241 and the abdominal surfaces 234 and 244 may be formed in a bulging shape. Moreover, about the abdominal surface 244 contact
- the abdominal surfaces 234 and 244 are formed from the back surface 231 and 241 side of the trunk 30.
- the affected area facing each other is visually recognized in an enlarged state. That is, since the details of the affected part can be visually recognized, the back surface visibility is improved.
- the shape bulging into a convex lens shape may be provided on the entire trunk 30 or only on the main part.
- the main part that needs to be enlarged and visually recognized on the back side may be provided with a convex lens-like shape, while the other parts may be flat as in the first embodiment.
- the shape of the convex lens provided on the rear surfaces 231 and 241 and the abdominal surfaces 234 and 244 may be a spherical convex lens shape.
- the back surface side of the resin functional unit 20 is enlarged by the convex lens-shaped bulging shape provided on at least one of the back surfaces 231 and 241 and the abdominal surfaces 234 and 244. Since it becomes visible, back surface visibility further improves. Moreover, since the rigidity of the resin functional part 20 is improved by providing the bulging shape, the durability of the medical scissors 200 is also improved.
- FIG. 6 is a diagram illustrating the shape of the medical scissor 300 according to the present embodiment.
- the medical scissor 300 shown in the figure is the same as the medical scissor 1 according to the first embodiment described above, except that protrusions are formed on the back surfaces 31 and 41 of the resin functional unit 20. Therefore, constituent elements other than the protrusions are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
- a ridge 370 extends along the longitudinal direction at the approximate center of the back surfaces 31 and 41 of the resin functional unit 20.
- the first portion 371 formed from the back surface 31 of the trunk portion 30 to the back surface of the bent portion 60, the back surface of the bent portion 60, and the collar The projecting shape may be different from that of the second portion 372 formed on the back surface 41 of the shape portion 40.
- the first portion 371 of the ridge 370 has a cross-sectional bell shape with a large protrusion height and a narrow width
- the second portion 372 of the ridge 370 has the shape shown in FIG.
- the height of the first portion 371 is higher than that of the second portion 372 (h1> h2)
- the width of the first portion 371 is narrower than the second portion 372 (w1 ⁇ w2).
- connection portion whose height and width gradually change between the first portion 371 and the second portion 372.
- the second portion 372 may be a mode that smoothly continues to the right side surface 42 and the left side surface 43.
- the shape of the protrusion 370 is changed between the first portion 371 formed from the back surface 31 of the trunk portion 30 to the bent portion 60 and the second portion 372 formed from the bent portion 60 to the flange-shaped portion 40. Therefore, while improving the rigidity from the trunk 30 to the bent portion 60 with a large stress load, the thickness of the saddle-shaped portion 40 close to the surgical target site is reduced to improve the visual field of the surgical field, and the back surface visibility is also good. can do.
- the entire protrusion 370 has a bell-shaped cross section with a large protrusion height and a narrow width like the first part 371, or the entire protrusion 370 rises like a second part 372 with a small protrusion height and a wide width. It goes without saying that it may be a ridge.
- FIG. 7 is a diagram illustrating the shape of the medical scissors 400 according to the present embodiment.
- the medical scissor 400 shown in the figure is the same as the medical scissor 1 according to the first embodiment described above except that a light guide portion is formed on the abdominal surfaces 34 and 44 of the resin functional unit 20. Therefore, constituent elements other than the light guide unit are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
- a light guide portion 470 extending to the vicinity of the front end portion 45 of the scissor-shaped portion 40 or the vicinity of the front end portion 45 along the longitudinal direction is formed in the approximate center of the abdominal surfaces 34, 44 of the resin functional unit 20. Yes.
- the light guide 470 can be formed by embedding resin materials having different characteristics in the abdominal surfaces 34 and 44 of the resin functional unit 20.
- the light guide part 470 is formed of a material having transparency and refractive index different from those of the resin functional part 20 main body. For example, by forming the light guide unit 470 from a resin material having higher transparency than the resin functional unit 20 main body, the light guide efficiency for guiding the light incident from the base end of the resin functional unit 20 to the front end is improved.
- the thickness of the light guide portion 470 includes the first portion 471 formed from the abdominal surface 34 of the trunk portion 30 to the back surface of the bent portion 60, and the abdominal surface of the bent portion 60.
- the second portion 472 formed on the abdominal surface 44 of the bowl-shaped portion 40 may be different.
- the thickness d2 of the second portion 472 shown in FIG. 7C is relatively smaller than the thickness d1 of the first portion 471 shown in FIG. 7B.
- the thickness of the light guide 470 includes the first portion 471 formed from the abdominal surface 34 of the trunk 30 to the back surface of the bent portion 60 and the second portion 472 formed from the bent portion 60 to the bowl-shaped portion 40.
- the light guide part 470 can be formed with an appropriate thickness according to the thickness of the resin functional part 20.
- FIG. 8 is a diagram illustrating the shape of the medical scissors 500 according to the present embodiment.
- the medical scissor 500 shown in the figure is the same as the medical scissor 1 according to the first embodiment described above except that the light guide section is formed inside the resin functional section 20.
- the components other than the light guide are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
- the light guide portion 570 extending along the longitudinal direction inside the resin functional portion 20 is formed in the medical bag 500.
- tip improves.
- the light guide unit 570 is embedded in the resin functional unit 20 by insert molding in which a resin is injected while inserting a light guide member such as an optical fiber in the mold, or two-color molding. Can be formed. Moreover, as shown in FIG.8 (c), you may form by inserting light guide members, such as an optical fiber, in the insertion hole formed along the elongate direction from the base end of the resin function part 20. As shown in FIG. 8B, the light guide unit 570 is embedded in the resin functional unit 20 by insert molding in which a resin is injected while inserting a light guide member such as an optical fiber in the mold, or two-color molding. Can be formed. Moreover, as shown in FIG.8 (c), you may form by inserting light guide members, such as an optical fiber, in the insertion hole formed along the elongate direction from the base end of the resin function part 20. As shown in FIG.
- FIG. 8 shows the case where the light guide 570 is formed only in the trunk 30, the light guide 570 may be extended to the bowl-shaped section 40 or in the middle of the bowl-shaped section 40. In this case, the affected part may be irradiated with light emitted from the light guide part 570.
- FIG. 9 is a diagram illustrating the shape of a medical scissor 600A according to the present embodiment
- FIG. 10 is a diagram illustrating the shape of a medical scissor 600B according to the present embodiment.
- the medical scissors 600A and 600B shown in these drawings are the medical scissors according to the first embodiment described above except that the bent portion 60 has a light guide structure that guides light toward the scissors-shaped portion 40. Since it is the same as that of the ridge 1, components other than the light guide structure of the bent portion 60 are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
- the light reflecting portion 670 reflects light traveling from the proximal end toward the distal end in the trunk portion 30 toward the distal end of the bowl-shaped portion 40 at the bent portion 60.
- the light reflecting portion 670 can be formed by providing a light reflecting structure or attaching or embedding a light reflecting material along the outer peripheral surface of the bent portion 60 in particular.
- the embedding of the light reflecting material can be performed, for example, by insert molding in which a resin is injected while the light reflecting material is inserted into a mold.
- the 10 has a prism structure 660 in the bent portion 60.
- the prism structure 660 refracts light that travels from the proximal end toward the distal end in the trunk portion 30 toward the distal end of the bowl-shaped portion 40.
- the light reflecting portion 670 can be formed by embedding a prism member in the bent portion 60.
- the embedding of the prism member can be performed, for example, by insert molding in which resin is injected while the prism member is inserted into a mold.
- the amount of radiated light from the distal end of the hook-like portion 40 is increased, so that the affected area illumination function is improved, and further, leakage light from the hook-like portion 40 is improved. Since the amount is increased, the rear surface transparency is improved.
- 26 to 30 are views for explaining the medical scissor 800 according to the present embodiment.
- 26 is a perspective view of the medical scissor 800
- FIG. 27 is a plan view of the medical scissor 800
- FIG. 28 is an exploded view of the medical scissor 800
- FIG. 29 is a cross-sectional view of the medical scissor 800
- FIG. The figure which looked at the functional resin part of the medical bag 800 from each surface is shown, respectively.
- the medical scissor 800 is roughly similar in configuration to the medical scissors 1 according to the first embodiment, and a grip portion 810 for a practitioner such as a doctor or an assistant to grip, and a grip portion 810
- the resin functional part 820 used by being connected and fixed to the tip of this is provided.
- the holding part 810 is provided with an accommodation space 870 in which an LED as the light source 875 and a battery as the power source 876 are accommodated and fixed.
- the light source 875 is fixed in the accommodation space 870 with the light emitting surface facing the distal end side of the grip portion 810 (the base end of the resin function portion 820).
- a battery as the power source 876 is an elongated AA type dry battery.
- the material and shape of the grip portion 810 are not particularly limited, but can be made of a lightweight resin or metal and can have an outer shape that can be gripped by the user to obtain good grip.
- the gripping part 810 has a body part 811, a right finger hook part 812, a left finger hook part 813, a rear finger hook part 814, and a switch 815 in appearance.
- the body part 811 has a configuration in which the front end side body part 817 and the tail end side body part 818 are connected via a connecting part 816.
- the right finger hook part 812, the left finger hook part 813, and the rear finger hook part 814 are: The tail end side body portion 818 is provided.
- the switch 815 When the switch 815 is operated, the power supply from the power source 876 accommodated in the accommodation space 870 is turned on / off, and the light from the light source 875 emitted to the resin function unit 820 is turned on / off. it can. Note that the operation performed using the switch 815 is not limited to turning on / off the power supply, and an operation for adjusting the power supply amount when the power is on (an operation for adjusting the amount of light emitted from the light source 875) may be enabled.
- the body portion 811 is formed on the outer peripheral surface of the other end portion in the female screw structure 816a formed on the inner peripheral surface of one end portion in the connecting portion 816 of the front end side body portion 817 and the tail end side body portion 818.
- the male screw structure 816b is integrated by screwing.
- the thread of the female screw structure 816a and the male screw structure 816b has a truncated conical shape with the tops cut off, and the wear rate of the thread due to the screw rotation operation is reduced.
- the female screw structure 816a and the male screw structure The service life of 816b is increased compared to the case where a screw thread whose top is not cut is employed.
- a groove 819 into which an O-ring is fitted is formed at the facing portion of the distal end side body portion 817 and the tail end side body portion 818.
- 811 is formed so as to extend along the circumferential direction of 811, and prevents entry into the accommodation space 870 from the gap between the connecting portions 816 of blood, body fluid, various kinds of water used during treatment, and the like. 28 and 29 show a state where an O-ring is fitted in the groove 819.
- the connecting portion 816 is provided with a rotation amount regulating means 890 that regulates the amount of screwing rotation in the fastening direction of the front end side body portion 817 and the tail end side body portion 818 so as not to proceed beyond a certain amount.
- This rotation amount regulating means 890 also functions as a fastening rotation positioning when the front end side body 817 and the tail end side body 818 are integrated by screwing.
- Steps 817 b and 818 b provided on the end surface 818 a of the side body 818 constitute rotation amount regulating means 890.
- the step surfaces of the step surfaces 817b and 818b provided on the end surfaces 817a and 818a are provided in the fastening direction of the screwing rotation, and the screwing rotation amount of the front end side body portion 817 and the tail end side body portion 818 is constant.
- the step surfaces of the steps 817b and 818b collide with each other and come into contact with each other to restrict the further progress of the screwing rotation in the fastening direction.
- connection part 850 The tip of the gripping part 810 and the tail end of the resin function part 820 are connected and fixed to each other by a connection part 850, and when the connection is released and removed, another resin function part 820 is attached to the grip part 810. It can be exchanged and connected.
- the gripping part 810 is provided with a male screw structure 851 on the outer peripheral surface of the tip part.
- the resin function part 820 has a concave part 852 that is recessed in the distal direction at the base end part, and a female screw structure 853 is provided on the inner peripheral surface of the concave part 852.
- the concave portion 852 of the resin functional portion 820 is sized to fit the concave and convex portions at the tip of the grip portion 810, and the female screw structure 853 and the male screw structure 851 are screwed together while the tip of the grip portion 810 is inserted into the concave portion 852.
- the grip portion 810 and the resin function portion 820 can be connected and integrated.
- connection part 850 an anti-slip structure for rotating the grip part 810 and the resin function part 820 in the fastening direction or the tightening direction is provided on the outer surface of the base end of the resin function part 820 that covers the tip of the grip part 810 from the outside. Is provided.
- the outer surface of the base end of the resin functional part 820 is formed in a substantially octagonal cross section in the length direction of the medical scissors 800.
- the front end surface of the grip portion 810 is configured to be transparent through the inside of the housing space 870 with a transparent resin.
- a hole 871 communicating with the accommodation space 870 is provided at the front end of the resin constituting the front end side body portion 817 of the gripping portion 810, and a cap-shaped part 872 made of a transparent resin covering the hole 871 is provided.
- the hole 871 is sealed by bonding so as to cover the front end of the front end side body portion 817 without any gap. Thereby, the light from the light source 875 can be emitted from the tip of the grasping portion 810, and intrusion into the accommodation space 870 of blood, body fluid, various moisture used during the treatment can be prevented.
- the part which covers the hole 871 in the cap-shaped part 872 is a flat surface. Thereby, the light emitted from the light source 875 in the accommodation space 870 passes through the cap-shaped part 872 with low loss.
- the LED as the light source 875 is fixed near the front end of the circuit board 873 disposed in the accommodation space 870, and a condensing cylindrical reflector 874 is disposed between the LED light emitting portion and the hole 871.
- the reflector 874 has a shape in which the diameter in the vicinity of the hole 871 is larger than the diameter in the vicinity of the light source 875 and gradually increases in diameter as it approaches the hole 871 from the light source 875.
- connection portion 850 is provided with a rotation amount restricting means 880 for restricting the amount of screwing rotation in the fastening direction of the distal end side body portion 817 and the resin function portion 820 from proceeding beyond a certain amount.
- This rotation amount regulating means 880 acts as a positioning for fastening rotation when the front end side body portion 817 and the resin function portion 820 are integrated by screwing.
- the resin functional part 820 includes a trunk part 830 having the base end part 830A connected and fixed to the grip part 810, and a hook-like part 840 that is bent and extended in a hook-like shape from the distal end part 830B of the trunk part 830 through the bending part 860.
- the trunk 830 is configured so that the affected part facing the abdominal surfaces 834, 844, 864 can be seen through from the back surfaces 831, 841, 861 side. Since the material, surface processing, and the like of the resin functional unit 820 are the same as those of the medical scissors 1 according to the first embodiment, detailed description thereof is omitted below.
- the trunk portion 830 has a substantially straight rod shape extending from a base end portion 830 ⁇ / b> A fixed to the distal end of the grip portion 810 toward a bent portion 860 between the trunk portion 830 and the hook-like portion 840. Functions as a support portion that supports the grip portion 810 at a fixed distance. Further, the trunk 830 also has a function as a light guide for guiding light incident from the base end 830A to the bent portion 860, and a light source 875 accommodated in the grip portion 810 enters the base end 830A. The light passes through the trunk 830 and is guided to the bent portion 860.
- the trunk 830 emits a part of the light passing therethrough as leakage light to the surroundings, and irradiates the affected part facing the abdominal surface 834 of the trunk 830 with the leakage light. For this reason, when the trunk portion 830 has internal passage light, the back surface visibility through the trunk portion 830 is improved as compared with the case where there is no internal passage light.
- the trunk 830 of the medical scissor 800 has an elliptical cross-sectional shape substantially perpendicular to the longitudinal direction of the trunk 830, and a protrusion 835 extends along the longitudinal direction at the approximate center of the back surface 831, 841.
- a protrusion 835 extends along the longitudinal direction at the approximate center of the back surface 831, 841.
- the cross-sectional shape of the trunk 830 into an elliptical shape close to a circle, the light guide efficiency for guiding the light incident from the base of the resin functional unit 820 to the tip is improved.
- the protrusions 835 on the back surfaces 831 and 841 the resin function part 820 is reinforced and the rigidity against the stress applied to the resin function part 820 is improved.
- the bent portion 860 is formed in a non-right angle with a constant R on both the inner periphery formed by the abdominal surface 864 and the outer periphery formed by the back surface 861. For this reason, it is difficult for stress to concentrate on a part of the bent portion 860 that connects between the trunk portion 830 and the bowl-shaped portion 840, and stress applied to the resin functional portion 820 when traction stress is applied to the medical rod 800 A shape that is distributed and burdened throughout the functional unit 820 and hardly breaks or breaks is realized.
- the resin functional portion 820 gradually changes to a wide / flat shape and continues to the wide / flat shape of the bowl-shaped portion 840.
- the abdominal surface 844 that is in contact with the affected area pulled by the saddle-shaped part 840 is formed with a substantially flat surface that is slightly rounded, the burden on the affected part that is in contact with the saddle-shaped part 840 is minimized. Can do. Furthermore, since the abdominal surface 844 and the right side surface 842 and the left side surface 843 are continuous curved surfaces without corners, the corners do not come into contact with the affected part, and the burden on the affected part with which the saddle-like part 840 comes into contact is further reduced. can do.
- the bent portion 860 maintains the angle between the extending direction of the trunk portion 830 and the extending direction of the hook-shaped portion 840 slightly inward from about 90 °.
- the hook-shaped portion 840 has a hook-and-mouth shape with its tip 845 bent inward. For this reason, the hook performance at the time of tissue traction by the hook-shaped portion 840 is improved.
- a part of the incident light from the base end portion 830A of the trunk portion 830 is emitted to the outside of the resin functional portion 820 at the bent portion 860, but the rest is reflected by the surface of the bent portion 860 and proceeds to the bowl-shaped portion 840. To do. Most of the light traveling in the bowl-shaped portion 840 is emitted from the vicinity of the tip portion 845. That is, since light is emitted from the vicinity of the tip 845 closest to the affected area, the visibility of the affected area is improved.
- the resin functional part 20 is made of resin, it is lighter than a conventional steel scissor, and the freedom of shape selection is increased. Moreover, since electricity is not conducted, there is no possibility that an electric scalpel or the like will come into contact and cause burns to the affected area. And since the resin function part 20 is formed with transparent resin, the visibility of the affected part which passed through the resin function part 20 improves markedly compared with the conventional steel ridge. In addition, since the light is allowed to pass through the resin functional unit 20, the surgical field is illuminated to expand the visual field of the doctor, and the back surface visibility is improved by the leaked light.
- FIG. 31 is a view for explaining a medical scissor 900 according to this embodiment. Since the configuration of the resin functional portion of the medical scissor 900 is the same as that of the medical sputum 800 according to the seventh embodiment described above, the detailed description of the configuration of the resin functional portion of the medical sputum 900 will be given below. Omitted.
- the shape of the grip portion 910 is substantially the same as the grip portion of a conventional metal medical scissors.
- a male screw structure similar to the tip of the grip portion 810 of the seventh embodiment described above is formed at the tip of the grip portion 910, and the resin function portion 820 of the seventh embodiment described above is formed at the tip.
- a resin-made medical scissor similar to a conventional metal medical scissor is realized as a whole.
- the medical scissor 800 according to the seventh embodiment described above is appropriately used as a resin scissor with a feeling of use in the same manner as a conventional metal medical scissor. It can be used by replacing with.
- 11 to 16 are diagrams showing various modified examples of the shape of the bowl-shaped portion.
- FIG. 11 shows a bifurcated hook-shaped portion 40
- FIG. 12 shows a trifurcated hook-shaped portion 40
- FIG. 13 shows that the width of the hook-shaped portion 40 is wider than the trunk 30.
- a hook-like portion 40 that is gently curved as a whole from the proximal end to the distal end is shown.
- FIG. 14 shows a bowl-shaped portion 40 having a width wider than that of the trunk portion 30 and being entirely curved from the proximal end to the distal end until the distal end faces the front side
- FIG. FIG. 16 shows a hook-like portion 40 that is entirely curved from the proximal end to the distal end until the distal end faces the front side.
- FIG. 16 shows the trunk 30 bent sideways, and then the distal end faces the near side.
- a hook-like portion 40 is shown that is entirely curved from the proximal end to the distal end.
- FIG. 17 is a diagram illustrating the resin functional unit 20 including the phosphorescent material 701. Even if the power supply to the light source 12 is stopped, the resin functional unit 20 including the phosphorescent material 701 maintains a state where the back surface transparency of the resin functional unit 20 and the affected part irradiation function are improved by light emission of the phosphorescent material 701 for a certain period of time. can do. Moreover, since the light emission from the phosphorescent material 701 is superimposed on the leakage light or irradiation light of the resin functional unit 20, there is also an effect of increasing and stabilizing the light amount.
- FIG. 17 shows an example in which the phosphorescent material 701 is embedded in the vicinity of the tip of the bowl-shaped portion 40.
- the phosphorescent material 701 may be disposed in other parts, or the bowl-shaped portion.
- the front end of 40 may be entirely formed of the phosphorescent material 701, and an arbitrary part of the resin functional unit 20 may be formed of the phosphorescent material 701.
- FIG. 18 to 21 are diagrams showing various modifications of the structure of the connecting portion 50.
- FIG. 18 to 21 are diagrams showing various modifications of the structure of the connecting portion 50.
- an engagement fixing portion 710 having a width wider than that of the trunk portion 30 is provided at the base end portion 30 ⁇ / b> A of the trunk portion 30, and the engagement fixing portion 710 can be inserted into the distal end of the grip portion 10. 711 is formed.
- the engagement fixing hole 711 has a different shape in the entrance portion 712 near the entrance and the back portion 713 in the back.
- the inlet portion 712 is configured by an insertion hole having a shape in which the centers of a rectangular hole through which the engagement fixing portion 710 is inserted in a non-rotating state and a round hole capable of axial rotation of the trunk portion 30 are integrated.
- the back portion 713 is configured by a hole that allows the engagement fixing portion 710 to be rotated around the axis of the trunk portion 30 at a certain angle or more.
- the shoulder portion 714 of the engagement fixing portion 710 When the engagement fixing portion 710 is inserted to the back end of the engagement fixing hole 711, the shoulder portion 714 of the engagement fixing portion 710 is positioned at the boundary between the back portion 713 and the inlet portion 712. When the trunk portion 30 is rotated in this state, the shoulder portion 714 of the engagement fixing portion 710 comes into contact with the step between the inlet portion 712 and the back portion 713 and is locked.
- the resin functional portion 20 is fixed to the grip portion 10 simply by inserting the engagement fixing portion 710 into the engagement fixing hole 711 and pivoting the trunk portion 30 axially.
- various other known structures are known as structures that are fixed by insertion and shaft rotation.
- an engagement structure similar to the fixing structure of a ceiling ceiling light as shown in FIG. May be adopted.
- a concave portion 720 having an inner shape substantially the same as the outer shape of the proximal end portion 30 ⁇ / b> A of the trunk portion 30 is provided at the distal end of the grip portion 10, and an engagement recess is formed on the inner wall surface of the concave portion 720. 721 is formed, and an engaging protrusion 722 is formed on the outer wall surface of the trunk 30.
- the engagement protrusion 722 engages with the engagement recess 721 so that the trunk portion 30 is fixed to the grip portion 10.
- a plurality of engagement recesses 721 and engagement protrusions 722 may be provided.
- a recess 730 is provided at the distal end of the gripping portion 10, and the inner shape of the back portion of the recess 730 is made substantially the same as the outer shape of the proximal end portion 30 ⁇ / b> A of the trunk portion 30.
- the thickness is substantially the same as that of the trunk 30, but the width is wider than that of the trunk 30.
- An engagement recess 731 is formed on the inner wall surface near the entrance of the recess 730, and an engagement protrusion 732 is formed on the outer wall surface of the trunk 30.
- the vicinity of the entrance of the recess 730 is pressed and clamped in the width direction from the outside, so that the vicinity of the entrance of the recess 730 expands in the thickness direction due to elastic deformation and engages with the engagement recess 731.
- the concave / convex engagement of the mating protrusion 732 is released. As a result, the trunk 30 can be pulled out from the recess 730.
- 22 and 23 are diagrams showing various modified examples of the grip portion 10.
- the gripping unit 10 may be provided with a finger hooking structure that can lock a finger when pulling a tissue near the affected part with a medical scissors.
- ring-shaped finger insertion holes 740, 741, and 742 are provided on the left and right sides and the tail end of the grip 10, respectively.
- the formation position of the finger hanging structure is not limited to the gripping portion 10, and the finger hanging structure may be formed in the resin function portion 20.
- the gripping part 10 may have a simple shape that does not accommodate a light source or a power source therein, so that the medical bag can be made compact and lightweight.
- the connection part 50 may be provided on both sides of the grip part 10 so that medical instruments such as the resin function part 20 can be connected and fixed to both ends of the grip part 10, respectively.
- the scissors connected to the side opposite to the scissors used for tissue pulling in the vicinity of the affected part can also be used as a locking structure that locks fingers during tissue pulling.
- FIG. 24 and FIG. 25 are diagrams showing modifications according to the internal structure of the resin constituting the trunk 30.
- the resin functional unit 20 may have a layered structure that is laminated so as to have a layer boundary along the extending direction of the trunk 30.
- a layer structure can be formed by lamination using a 3D printer, or can be formed by insert molding.
- FIG. 24 shows a layer structure having a layer boundary parallel to the back surface and the abdominal surface of the trunk 30, and
- FIG. 25 shows a layer structure having a layer boundary parallel to the right side and the left side of the trunk 30.
- finger insertion hole 741 ... finger insertion Hole, 742 ... Finger insertion hole, 800 ... Medical scissors, 810 ... Grip part, 811 ... Torso part, 812 ... Right finger hook part, 813 ... Left finger hook part, 814 ... Rear finger hook part, 815 ... Switch, 816 ... Connecting part, 816a ... Female screw structure, 816b ... Male screw structure, 817 ... Tip body side, 817a ... End face, 817b ... Step, 818 ... Tail end side body part, 818a ... End face, 818b ... Step, 819 ... Groove 820 ... Resin functional part, 830 ... Trunk part, 830A ...
- Base end part, 830B ... Tip part, 831 ... Back face, 834 ... Abdominal face, 835 ... Convex streak, 840 ... Saddle-like part, 841 ... Back face, 842 ... Right side face, 843 ... Left side, 844 ... Abdominal side, 845 Tip part, 850 ... Connection part, 851 ... Male screw structure, 852 ... Recessed part, 853 ... Female screw structure, 854 ... End face, 855 ... End face, 860 ... Bending part, 861 ... Back face, 864 ... Abdominal face, 870 ... Accommodating space, 871 ... Hole, 872 ... Cap-shaped parts, 873 ... Circuit board, 874 ...
- Reflective plate 875 ... Light source, 876 ... Power source, 880 ... Rotation amount restricting means, 890 ... Rotation amount restricting means, 881 ... engagement protrusion, 882 ... Engaging recess, 900 ... medical scissors, 910 ... gripping part
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Abstract
Description
(1)第1の実施形態:
(2)第2の実施形態:
(3)第3の実施形態:
(4)第4の実施形態:
(5)第5の実施形態:
(6)第6の実施形態:
(7)第7の実施形態:
(8)第8の実施形態:
(9)その他変形例:
図1~図4は、本実施形態にかかる医療用鈎1を説明するための図である。図1には医療用鈎1を斜視的に示し、図2には医療用鈎1の側面及び断面を示し、図3には医療用鈎1の接続部を分解した状態を斜視的に示し、図4には医療用鈎1の把持部を断面的に示してある。
曲率Rが小さいほど組織牽引の容易性が向上し、曲率Rを大きくすれば屈曲部60の強度と導光効率が向上する。
図5は、本実施形態にかかる医療用鈎200の形状を説明する図である。同図に示す医療用鈎200は、樹脂機能部20の幹部30および鈎状部40の背面および腹面の形状を除くと上述した第1の実施形態にかかる医療用鈎1と同様であるため、樹脂機能部20の腹面及び背面以外の構成要素については第1の実施形態と同じ符号を付して詳細な説明を省略する。
図6は、本実施形態にかかる医療用鈎300の形状を説明する図である。なお、同図に示す医療用鈎300は、樹脂機能部20の背面31,41に突条が形成されている点を除くと、上述した第1の実施形態にかかる医療用鈎1と同様であるため、突条以外の構成要素については第1の実施形態と同じ符号を付して詳細な説明を省略する。
図7は、本実施形態にかかる医療用鈎400の形状を説明する図である。なお、同図に示す医療用鈎400は、樹脂機能部20の腹面34,44に導光部が形成されている点を除くと、上述した第1の実施形態にかかる医療用鈎1と同様であるため、導光部以外の構成要素については第1の実施形態と同じ符号を付して詳細な説明を省略する。
この導光部470は、樹脂機能部20の腹面34,44に特性の異なる樹脂材料を埋め込むように設けることで形成することができる。
図8は、本実施形態にかかる医療用鈎500の形状を説明する図である。なお、同図に示す医療用鈎500は、樹脂機能部20の内部に導光部が形成されている点を除くと、上述した第1の実施形態にかかる医療用鈎1と同様であるため、導光部以外の構成要素については第1の実施形態と同じ符号を付して詳細な説明を省略する。
図9は、本実施形態にかかる医療用鈎600Aの形状を説明する図、図10は、本実施形態にかかる医療用鈎600Bの形状を説明する図である。なお、これらの図に示す医療用鈎600A,600Bは、屈曲部60において鈎状部40に向けて光を導く導光構造を有する点を除くと、上述し
た第1の実施形態にかかる医療用鈎1と同様であるため、屈曲部60の導光構造以外の構成要素については第1の実施形態と同じ符号を付して詳細な説明を省略する。
図26~30は、本実施形態にかかる医療用鈎800を説明する図である。図26には医療用鈎800の斜視図、図27には医療用鈎800の平面図、図28には医療用鈎800の分解図、図29には医療用鈎800の断面図、図30には医療用鈎800の機能樹脂部を各面から見た図をそれぞれ示してある。
図31は、本実施形態に係る医療用鈎900を説明する図である。医療用鈎900は、樹脂機能部の構成は上述した第7の実施形態に係る医療用鈎800と同様であるため、医療用鈎900の樹脂機能部の構成については、以下では詳細な説明を省略する。
その他、医療用鈎1,200,300,400,500,600A,600B,800は様々に変形することが可能であり、変形例の一部を以下で説明する。
Claims (12)
- 把持部と、
透明樹脂で形成され前記把持部から延設された樹脂機能部と、を備え、
前記樹脂機能部は、前記把持部に基端を接続された幹部と前記幹部の先端から鈎状に延設された鈎状部とを有し、
前記樹脂機能部は、その腹面に対向する患部を背面側から透視可能に構成されていることを特徴とする医療用鈎。 - 前記把持部は、電源により発光する光源を内蔵し、前記光源からの光を前記幹部の基端から入射して前記鈎状部に向けて発光することにより前記樹脂機能部の腹面に対向する患部組織の背面側からの視認性を向上させることを特徴とする請求項1に記載の医療用鈎。
- 前記把持部において、前記樹脂機能部が固定される固定穴と前記光源を収容する収容空間との連通路は封止材によって封止されていることを特徴とする請求項2に記載の医療用鈎。
- 前記樹脂機能部は、前記幹部の延設方向に沿った層境界を有するように積層された層構造を備えることを特徴とする請求項2又は請求項3に記載の医療用鈎。
- 前記樹脂機能部は、腹面と背面がそれぞれ平坦面で形成されていることを特徴とする請求項1~請求項4の何れか1項に記載の医療用鈎。
- 前記樹脂機能部は、腹面と背面の少なくとも一方が凸レンズ形状を有することを特徴とする請求項1~請求項5の何れか1項に記載の医療用鈎。
- 前記樹脂機能部の表面に撥水加工と撥油加工の少なくとも一方が施されていることを特徴とする請求項1~請求項6の何れか1項に記載の医療用鈎。
- 前記鈎状部の一部を蓄光材としたことを特徴とする請求項1~請求項7の何れか1項に記載の医療用鈎。
- 前記幹部と前記鈎状部の間の屈曲部に光を屈折進行させるプリズム構造を有することを特徴とする請求項1~請求項8の何れか1項に記載の医療用鈎。
- 前記幹部と前記鈎状部の間の屈曲部の外周面に沿って反射部が形成されていることを特徴とする請求項1~請求項9の何れか1項に記載の医療用鈎。
- 前記把持部の側面から側方へ突出する指掛け構造が左右対称に設けられたことを特徴とする請求項1~請求項10の何れか1項に記載の医療用鈎。
- 前記樹脂機能部は、その背面に沿って前記鈎状部まで延設された突条を有し、
前記鈎状部における前記突条は、前記幹部における突条に比べて幅を広く突出高を小さく形成されていることを特徴とする請求項1~請求項11の何れか1項に記載の医療用鈎。
Priority Applications (9)
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| FIEP15839219.1T FI3192451T3 (fi) | 2014-09-13 | 2015-06-25 | Lääketieteellinen retraktori |
| EP15839219.1A EP3192451B1 (en) | 2014-09-13 | 2015-06-25 | Medical hook |
| EP20159844.8A EP3679864B1 (en) | 2014-09-13 | 2015-06-25 | Medical retractor |
| JP2016547745A JP6278493B2 (ja) | 2014-09-13 | 2015-06-25 | 医療用鈎 |
| DK15839219.1T DK3192451T3 (da) | 2014-09-13 | 2015-06-25 | Medicinsk krog |
| US15/327,215 US10166016B2 (en) | 2014-09-13 | 2015-06-25 | Medical retractor |
| ES15839219T ES2931998T3 (es) | 2014-09-13 | 2015-06-25 | Gancho médico |
| PL15839219.1T PL3192451T3 (pl) | 2014-09-13 | 2015-06-25 | Hak medyczny |
| US16/195,028 US10765417B2 (en) | 2014-09-13 | 2018-11-19 | Medical retractor |
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| JP2014187131 | 2014-09-13 | ||
| JP2014-187131 | 2014-09-13 |
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| US15/327,215 A-371-Of-International US10166016B2 (en) | 2014-09-13 | 2015-06-25 | Medical retractor |
| US16/195,028 Continuation US10765417B2 (en) | 2014-09-13 | 2018-11-19 | Medical retractor |
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| Publication Number | Publication Date |
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| WO2016038981A1 true WO2016038981A1 (ja) | 2016-03-17 |
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| Country | Link |
|---|---|
| US (2) | US10166016B2 (ja) |
| EP (2) | EP3192451B1 (ja) |
| JP (2) | JP6278493B2 (ja) |
| DK (1) | DK3192451T3 (ja) |
| ES (1) | ES2931998T3 (ja) |
| FI (1) | FI3192451T3 (ja) |
| PL (1) | PL3192451T3 (ja) |
| WO (1) | WO2016038981A1 (ja) |
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| WO2020095862A1 (ja) * | 2018-11-05 | 2020-05-14 | 安井株式会社 | 内視鏡下手術用照射器具 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6278493B2 (ja) | 2018-02-14 |
| US20170172555A1 (en) | 2017-06-22 |
| JP2018043066A (ja) | 2018-03-22 |
| EP3679864A1 (en) | 2020-07-15 |
| US10166016B2 (en) | 2019-01-01 |
| ES2931998T3 (es) | 2023-01-09 |
| JP6467027B2 (ja) | 2019-02-06 |
| EP3192451A1 (en) | 2017-07-19 |
| EP3679864B1 (en) | 2022-11-09 |
| JPWO2016038981A1 (ja) | 2017-04-27 |
| EP3192451A4 (en) | 2018-09-12 |
| EP3192451B1 (en) | 2022-10-19 |
| US20190083079A1 (en) | 2019-03-21 |
| PL3192451T3 (pl) | 2023-02-20 |
| FI3192451T3 (fi) | 2023-01-13 |
| DK3192451T3 (da) | 2022-12-05 |
| US10765417B2 (en) | 2020-09-08 |
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