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WO2022264302A1 - Élément de recouvrement - Google Patents

Élément de recouvrement Download PDF

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Publication number
WO2022264302A1
WO2022264302A1 PCT/JP2021/022812 JP2021022812W WO2022264302A1 WO 2022264302 A1 WO2022264302 A1 WO 2022264302A1 JP 2021022812 W JP2021022812 W JP 2021022812W WO 2022264302 A1 WO2022264302 A1 WO 2022264302A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
base
treatment
surgical instrument
flexible
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/022812
Other languages
English (en)
Japanese (ja)
Inventor
好紀 後谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riverfield Inc
Original Assignee
Riverfield Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Riverfield Inc filed Critical Riverfield Inc
Priority to PCT/JP2021/022812 priority Critical patent/WO2022264302A1/fr
Priority to JP2022534736A priority patent/JP7175546B1/ja
Publication of WO2022264302A1 publication Critical patent/WO2022264302A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/30—Surgical robots

Definitions

  • the present invention relates to a cover for covering a surgical instrument whose treatment section is relatively movable with respect to its base.
  • the surgical instrument cover described in Patent Document 1 is a cylindrical cover that covers a surgical instrument having a base and a treatment section via a joint, and has a root portion disposed on the outer peripheral surface on the side of the base. , a tip portion that covers at least a portion of the circumference of the treatment portion, and a central portion that covers the circumference of the joint portion, and the central portion has a higher flexibility than the root portion.
  • the surgical instrument cover described in Patent Document 1 if the diameter of the central portion is larger than that of the distal end and the root, and the shape is substantially symmetrical in the longitudinal direction, the distal end and the root when attached to the surgical instrument. There is a risk of mistaking the direction of the parts. Since the cover has a predetermined tightening force, it may be damaged in the process of removing and reattaching the attached one. It cannot be used from the viewpoint of preventing dropping and ensuring sealing performance. By ensuring insulation, for example, it is possible to prevent the surroundings from being burned during cauterization with an electric scalpel.
  • the cover is provided with protrusions and recesses on the inner surface side in order to provide a predetermined function. If the direction of the tip portion and the root portion is wrong, it will be difficult to exhibit the predetermined function, and it is assumed that it will be difficult to remove the device without damage after attachment due to the engagement of the protrusions and recesses.
  • the present invention provides a cover for covering a surgical instrument in which a base portion and a treatment portion are configured to be movable relative to each other.
  • a cover for a surgical treatment instrument which can be arranged and which can ensure visibility from the root part side to the treatment part side.
  • the present invention provides a cover that can prevent the cover from coming off the surgical instrument and that can be attached to the surgical instrument without applying excessive force. aim.
  • a further object of the present invention is to provide a cover that can prevent the tip portion and the base portion from being attached in the wrong direction, and can prevent damage due to attachment/detachment to/from a surgical instrument.
  • the cover of the present invention includes a base, a treatment section, a connecting section that connects the base and the treatment section so that the treatment section is movable relative to the base,
  • the cover has a cylindrical shape and includes a root portion arranged in close contact with the outer circumference of the base portion and a portion of the treatment portion arranged in close contact. It comprises a tip portion and an intermediate portion that covers the connecting portion, and the intermediate portion has a flexible portion that can expand and contract along with the movement of the connecting portion in a partial range in the circumferential direction of the intermediate portion.
  • the flexible portion is preferably formed thinner than the root portion and the tip portion so that it can expand and contract according to the movement of the connecting portion.
  • the flexible portion preferably has a bellows structure that allows it to expand and contract in the extending direction of the tubular shape in accordance with the movement of the connecting portion.
  • the flexible portion is preferably made of a material different from that of at least one of the root portion and the tip portion.
  • the root portion preferably has a thickness that allows the base portion and the treatment portion to maintain close contact regardless of the movement of the connecting portion.
  • the tip portion has a thickness capable of maintaining a close contact state between the base portion and the treatment portion regardless of the movement of the connecting portion.
  • connection portion has a rotation shaft that allows the treatment portion to rotate relative to the base portion.
  • the distal end portion has an expandable portion that enables expansion and contraction of the opening diameter in the circumferential direction, and the expandable portion is formed so as to expand and contract independently of the flexible portion. is preferred.
  • the expandable portion preferably has a bellows structure that allows the tip portion to expand and contract along its circumferential direction.
  • the stretchable portion is preferably formed thinner than other portions of the distal end portion so that it can stretch and contract according to the movement of the treatment instrument.
  • the stretchable portion is made of a material different from that of the other portion of the distal end portion so that it can be stretched and stretched in accordance with the movement of the treatment instrument.
  • the stretchable portion is provided in a partial range of the distal end portion in the circumferential direction.
  • the inner surface of the base portion is fitted with the base-side fitting portion provided on the outer surface of the base portion to restrict relative movement along the extending direction of the cylindrical shape with respect to the base portion.
  • a fitting portion is preferably provided.
  • the base-side fitting portion is an inward fitting concave portion
  • the root-side fitting portion is an inwardly protruding fitting convex portion
  • a plurality of flexible portions are provided at regular angular intervals in the circumferential direction.
  • the flexible portion is arranged in its circumferential direction so as to correspond to the direction of movement of the treatment portion relative to the base portion.
  • the intermediate portion has a thick portion thicker than at least one of the root portion and the tip portion in a region where the flexible portion is not provided in the circumferential direction.
  • the cover has a mark on its outer surface indicating the mounting direction to the surgical instrument.
  • the cover of the present invention has a base portion, a treatment portion, and a connecting portion that connects the base portion and the treatment portion to each other so that the treatment portion is movable relative to the base portion.
  • a cover for covering a surgical treatment instrument the cover having a cylindrical shape and having a root portion arranged in close contact with the outer periphery of the base and a tip portion arranged in close contact with a part of the treatment section. and an intermediate portion that covers the connecting portion, the inner surface of the root portion is fitted with the base-side fitting portion provided on the outer surface of the base portion, and relative movement along the extending direction of the cylindrical shape with respect to the base portion is provided with a root-side fitting portion that regulates the
  • the cover of the present invention includes a base, a treatment section, and a connecting section that connects the base and the treatment section to each other so that the treatment section is movable relative to the base.
  • the cover has a cylindrical shape and includes a root portion that is arranged in close contact with the outer circumference of the base and a tip that is arranged in close contact with a part of the treatment portion. and an intermediate portion that covers the connecting portion, the intermediate portion having a flexible portion that can expand and contract in accordance with the movement of the connecting portion in a partial range in the circumferential direction. And, it is characterized in that at least one outer surface of the distal end portion has a mark indicating the mounting direction to the surgical instrument.
  • the cover of the present invention has a base portion, a treatment portion, and a connecting portion that connects the base portion and the treatment portion to each other so that the treatment portion is movable relative to the base portion.
  • a cover for covering the treatment instrument the cover having a cylindrical shape and having a root portion arranged in close contact with the outer periphery of the base portion and a tip portion arranged in close contact with a portion of the treatment portion.
  • the intermediate portion has a flexible portion that can expand and contract in accordance with the movement of the connecting portion in a partial range in the circumferential direction, and the tip portion extends in the circumferential direction.
  • the stretchable portion is formed so as to stretch and contract independently of the flexible portion.
  • a cover for covering a surgical instrument in which a base portion and a treatment portion are configured to be relatively movable when the cover is attached to the surgical instrument, the cover is placed at a predetermined position with high accuracy.
  • a cover that can ensure visibility from the root portion side to the treatment portion side.
  • a cover that can prevent the cover from coming off the surgical instrument and that can be attached to the surgical instrument without applying excessive force.
  • a cover that can prevent the tip portion and the base portion from being attached in the wrong direction, and can prevent damage due to detachment from the surgical instrument.
  • FIG. 2 is a cross-sectional view taken along the line A-A' in FIG. 1(b);
  • (a) is a perspective view showing the state before the cover is attached to the surgical instrument,
  • (b) is a perspective view showing the cover being attached to the surgical instrument, and
  • (c) is the cover attached to the surgical instrument. It is a perspective view which shows the state where mounting
  • FIG. 10 is a cross-sectional view showing a state in which the cover according to Modification 1 is attached to the surgical instrument;
  • (a) is a perspective view showing the configuration of a cover according to modification 2
  • (b) is a cross-sectional view taken along the central axis of the cover of (a).
  • FIG. 6B is a cross-sectional view taken along the line C-C' of FIG. 6B;
  • FIG. 11 is a perspective view showing the structure of a cover according to a second embodiment;
  • FIG. 9 is a cross-sectional view taken along line B-B' of FIG. 8;
  • (a) is a cross-sectional view of the cover attached to the surgical instrument, and
  • (b) is a cross-sectional view when the connecting portion is rotated about the rotation shaft from the state of (a).
  • (a) is a perspective view showing the configuration of a cover according to a modification of the second embodiment, and (b) is a front view of the cover of (a).
  • (a) is a perspective view showing a state in which the cover shown in FIG. 11 is attached to the surgical instrument, and (b) is a front view of the cover of (a).
  • FIG. 1(a) is a perspective view showing the configuration of the cover 10 according to the first embodiment
  • FIG. 1(b) is a cross-sectional view along the central axis AX1 of the cover 10.
  • FIG. 2 is a cross-sectional view taken along line AA' of FIG. 1(b).
  • 3(a) is a perspective view showing the state before the cover 10 is attached to the surgical instrument 30
  • (b) is a perspective view showing the cover 10 being attached to the surgical instrument
  • (c) is a 3 is a perspective view showing a state in which the cover 10 has been completely attached to the surgical instrument 30;
  • FIG. 1(a) is a perspective view showing the configuration of the cover 10 according to the first embodiment
  • FIG. 1(b) is a cross-sectional view along the central axis AX1 of the cover 10.
  • FIG. 2 is a cross-sectional view taken along line AA' of FIG. 1(b).
  • 3(a) is a perspective view showing the state before the cover 10
  • FIG. 4(a) is a cross-sectional view showing the inside of the surgical instrument 30 with the cover 10 attached, and (b) shows a state in which the surgical instrument 30 of (a) is rotated about the rotation axis AX4. It is a sectional view.
  • the cover 10 has a hollow cylindrical shape and is made of an elastically deformable material to cover the surgical instrument 30 for operation.
  • the inner diameter of the cover 10 is set to be smaller than the diameter (not shown) of the circumscribed circle including the outer shape of the surgical instrument 30 when viewed from the direction of its central axis AX2.
  • the material forming the cover 10 has insulation and airtightness. Since the cover 10 has insulating properties, it is possible to prevent energization through the cover 10 even if the base 31 accommodated inside the cover 10 is energized. Since the cover 10 is airtight, for example, when air is delivered into the patient's body through the air delivery holes provided in the base 31, the air does not leak from the outer peripheral surface of the cover 10. FIG.
  • Examples of materials for the cover 10 include materials that comply with JIS-K6253 (ISO 37:2011) and have a rubber hardness of 10 degrees or more and 80 degrees or less according to durometer type A in an environment of 23°C. Specifically, polyurethane, silicone rubber, ethylene rubber, fluororubber, nitrile rubber, natural rubber, butyl rubber, and ceramic urethane can be used.
  • the rubber hardness of the cover 10 is more preferable to set in the range of 40 degrees or more and 60 degrees or less. If the angle is less than 40 degrees, the elasticity is not sufficient, so it becomes difficult to maintain the tubular shape, and bending due to gravity occurs, making it difficult to attach to the surgical instrument 30 . On the other hand, when it exceeds 60 degrees, it becomes difficult to deform in the radial direction of the cylindrical shape, so that it is easy to get caught on the unevenness when attached to the surgical treatment instrument 30, resulting in poor attachment and adhesion to each part after attachment. may decrease.
  • the cover 10 comes into contact with or is introduced into the patient's body, it preferably has durability that can withstand various types of sterilization, such as chemical resistance and heat resistance.
  • the surgical instrument 30 includes a base portion 31 , a treatment portion 32 , and the base portion 31 and the treatment portion 32 such that the treatment portion 32 is movable relative to the base portion 31 . and a connecting portion 40 for connecting to each other.
  • the connecting portion 40 has two rotation axes AX3 and AX4 perpendicular to the central axis AX2 of the surgical instrument 30, and these rotation axes AX3 and AX4 extend perpendicular to each other.
  • the treatment portion 32 can rotate relative to the base portion 31 around the two rotation axes AX3 and AX4.
  • the treatment section 32 can be moved in any desired orientation and in any desired direction by the rotation of the central axis AX2 and the two rotation axes AX3 and AX4. can be directed to
  • the base 31 of the surgical instrument 30 has a cylindrical outer peripheral surface. On the outer peripheral surface, that is, the outer surface 31a of the base portion 31, the side opposite to the treatment section 32 in the direction along the central axis AX2 of the surgical instrument 30, that is, the main body (not shown) that supports the surgical instrument 30.
  • a concentric fitting recess 33 with a small outer diameter is provided on the side as a base-side fitting portion.
  • the cover 10 includes a base portion 11, a tip portion 12 located on the opposite side of the base portion 11, and a base portion 11 in the direction along the central axis AX1. and an intermediate portion 13 between the tip portion 12 and the tip portion 12 .
  • the surgical instrument 30 is attached through the opening 11a of the root portion 11, and when the attachment is completed, the treatment portion 32 extends into the opening 12a of the tip portion 12 as shown in FIG. 3(c). extend outside from Due to its elasticity, the cover 10 can bring at least the root portion 11 and the tip portion 12 into close contact with the surgical treatment instrument 30 when it is externally inserted onto the surgical treatment instrument 30 .
  • the intermediate portion 13 is located on the tip portion 12 side in the direction of the central axis AX1 of the cover 10.
  • a flexible portion 15 thinner than the root portion 11 and the tip portion 12 is provided in a range corresponding to the two rotation axes AX3 and AX4.
  • two flexible portions 15 are provided symmetrically with respect to the central axis AX1 so as to occupy half the angular range of the intermediate portion 13 in the circumferential direction D (circumferential direction in FIG. 2).
  • the two flexible portions 15 are provided so as to each occupy an angular range of 90 degrees, and the root portion 11 and the tip portion 12 are provided between these flexible portions 15 in the circumferential direction.
  • Two thick portions 16 having the same thickness as are provided symmetrically with respect to the central axis AX1.
  • the flexible portion 15 and the thick portion 16 have a common outer peripheral surface, and since this outer peripheral surface is circular without irregularities, the operator can easily move the distal portion 12 from the root portion 11 side. Since there is no obstruction when viewing, the visible range during the procedure is not limited.
  • the root portion 11, the tip portion 12, and the thick portion 16 have the same thickness.
  • This thickness allows the cover 10 to move on the surgical instrument 30 when the cover 10 is attached to the surgical instrument 30, and allows the root portion 11 and the distal end portion 12 to be accurately positioned at predetermined positions. , is set so as to exhibit flexibility to the extent that it can be brought into close contact with the surgical treatment instrument 30 .
  • the thickness of the flexible portion 15 is set so as to exhibit flexibility that does not impede movement when the treatment portion 32 of the surgical instrument 30 rotates about the rotation axes AX3 and AX4. be done.
  • the flexible portion 15 Since the thick portion 16 and the flexible portion 15 thinner than the thick portion 16 coexist in the circumferential direction D, the flexible portion 15 is It is possible to expand and contract in the extension direction of the cover 10 (direction along the central axis AX1) and to ensure visibility from the root portion 11 side to the treatment portion 32 side.
  • the cover 10 can be integrally manufactured by a molding process such as injection molding, compression molding, or press-fit molding. It is also possible to add the flexible part 15 by welding or the like after forming parts other than 15 in the molding process.
  • the flexible portion 15 coexists with the thick portion 16 in the circumferential direction, and the range and number thereof are arbitrary according to the configuration of the surgical instrument 30 as long as visibility from the root portion 11 side to the treatment portion 32 side can be ensured.
  • the ranges need not be identical to each other.
  • the numbers of the flexible portions 15 and the thick portions 16 may not be the same.
  • both ends of the cover 10 in the direction of the central axis AX1 are openings, and an opening 11a at the end of the root portion 11 is an opening through which a surgical instrument 30 can be inserted. It has a diameter, and the opening 12a at the end of the distal end portion 12 can extend in close contact with the treatment portion 32 of the inserted surgical treatment instrument 30 (see FIG. 3(c)).
  • the opening 12a has an opening diameter that allows close contact with the outer surface of the extended treatment portion 32 due to its elasticity.
  • a protective portion is formed on the inner surface of the cover 10 in a region closer to the root portion 11 than the flexible portion 15 and the thick portion 16 in the direction along the central axis AX1. 17 is provided.
  • the protective portion 17 has a thick-walled structure in which the intermediate portion 13 is thicker than the root portion 11 and the tip portion 12 toward the central axis AX1.
  • a fitting convex portion 19 is provided as a root portion side fitting portion, the thickness of which increases toward the central axis AX1 side.
  • the fitting convex portion 19 is provided in a range corresponding to the fitting concave portion 33 of the base portion 31 when the cover 10 is attached to the surgical instrument 30 .
  • the cover 10 is provided with the fitting projection 19 and the base 31 of the surgical instrument 30 is provided with the fitting recess 33.
  • a section may be provided.
  • the shapes and numbers of the fitting projections and fitting recesses are not limited to those shown in FIGS. 1(a) and 1(b). may be provided.
  • both the root-side fitting portion and the base-side fitting portion are projections protruding toward the respective central axes, so that when the cover 10 is attached to the surgical treatment instrument 30, the projections are overcome by each other. With this configuration, the position of the cover 10 with respect to the surgical instrument 30 can be held by engaging the convex portions with each other.
  • a triangular mark 14 pointing toward 11 is provided on the outer surface of the cover 10, from the tip portion 12 to the root portion 11 side along the central axis AX1, A triangular mark 14 pointing toward 11 is provided.
  • the marking 14 By providing the mark 14, the mounting direction of the cover 10 with respect to the surgical instrument 30 is clarified. Since the cover 10 is arranged in close contact with the surgical instrument 30 to ensure insulation, there is a risk that the cover 10 will be damaged if an attempt is made to remove the cover 10 once attached. In the configuration in which the protective portion 17 and the fitting convex portion 19 are provided on the inner surface and the thin flexible portion 15 is provided, there is a high possibility that damage will occur during detachment. Therefore, providing the mark 14 is extremely useful in preventing mounting in the wrong orientation.
  • the cover 10 configured as described above is inserted over the surgical instrument 30 from the root portion 11 side and moved along the central axis AX2 of the surgical instrument 30 (FIG. 3). (a), (b)). Then, when the treatment portion 32 extends from the opening 12a of the distal end portion 12 of the cover 10 and the fitting projection 19 fits into the fitting recess 33, the attachment of the cover 10 to the surgical instrument 30 is completed (Fig. 3(c), FIG. 4(a)).
  • the treatment portion 32 is rotated relative to the base portion 31 about the two rotation axes AX3 and AX4, respectively, so that it can be directed in any direction. can take a stance.
  • the expansion and contraction of the flexible portion 15 allows the cover 10 to be deformed while maintaining close contact with the surgical instrument 30.
  • FIG. 4(b) the expansion and contraction of the flexible portion 15 allows the cover 10 to be deformed while maintaining close contact with the surgical instrument 30.
  • FIG. 5 is a cross-sectional view showing a state where the cover 50 according to Modification 1 is attached to the surgical instrument 30.
  • the cover 50 shown in FIG. 52 and a fitting convex portion 59 as a root-side fitting portion whose thickness is increased toward the central axis AX2 side.
  • a thin flexible portion 55 is provided.
  • the flexible portion 55 is provided in a range corresponding to the connecting portion 40 in the direction of the central axis AX2 of the surgical instrument 30, and has a curved inner surface convex outward.
  • a large gap can be provided between the connecting portion 40 and the connecting portion 40, so that the connecting portion 40 is less likely to come into contact with the flexible portion 55 when the base portion 31 and the treatment portion 32 of the surgical instrument 30 are rotated relative to each other. , the occurrence of damage to the flexible portion 55 can be suppressed.
  • FIG. 6A is a perspective view showing the configuration of the cover 60 according to Modification 2
  • FIG. 6B is a cross-sectional view of the cover 60 taken along the central axis AX6.
  • FIG. 7 is a sectional view taken along line CC' of FIG. 6(b).
  • a cover 60 shown in FIGS. 6A, 6B, and 7 has a hollow tubular shape, and is positioned on the side opposite to the root portion 61, like the cover 10 of the first embodiment.
  • a triangular mark 64 directed from the tip portion 62 side to the root portion 61 side is provided on the outer peripheral surface of the portion 61 .
  • the intermediate portion 63 is located on the distal end portion 62 side in the direction of the central axis AX6 of the cover 60 and is positioned between the two rotation axes AX3 and AX4 of the surgical instrument 30.
  • a flexible portion 65 thinner than the root portion 61 and the tip portion 62 is provided in a range corresponding to .
  • two flexible portions 65 are provided symmetrically with respect to the central axis AX6 so as to occupy half the angular range of the intermediate portion 63 in the circumferential direction D.
  • Each flexible portion 65 is provided to occupy an angular range of 90 degrees, and two openings 66 are provided between the two flexible portions 65 in the circumferential direction.
  • a ring-shaped highly flexible member 67 is provided radially outside the flexible portion 65 and the opening 66.
  • the highly flexible member 67 covers the flexible portion 65 and the opening 66 from the outside in the radial direction of the cover 60, and both ends of the cover 60 in the direction of the central axis AX6 are located on the outer peripheral surface of the distal end portion 12 and , are arranged in contact with the outer peripheral surface of the intermediate portion 13 except for the flexible portion 65, respectively.
  • Such an arrangement allows the flexible portion 65 to be deformed in accordance with the operation of the connecting portion 40, and maintains the state in which the opening 66 is closed to the outside regardless of the deformation state of the flexible portion 65. maintained.
  • the flexible portion 65 has the same thickness as the flexible portion 15 of the first embodiment.
  • the highly flexible member 67 maintains close contact with the flexible portion 65 when the flexible portion 65 is deformed due to the operation of the connecting portion 40, and is flexible enough not to hinder the deformation of the flexible portion 65. of flexible material.
  • the highly flexible member 67 is arranged so as to hold down the flexible portion 65 with a constant pressure toward the central axis AX6.
  • the highly flexible member 67 preferably has insulation, and more preferably covers the opening 66 so as to ensure insulation regardless of the operating state of the surgical instrument 30 . Since the highly flexible member 67 covers the opening 66 while ensuring insulation, even if the base 31 accommodated inside the cover 60 is accompanied by electricity, it is prevented from being energized through the cover 60. be able to.
  • the highly flexible member 67 preferably covers the opening 66 so as to ensure airtightness regardless of the operational state of the surgical instrument 30 . Since the highly flexible member 67 covers the opening 66 while ensuring airtightness, air leakage from the outer peripheral surface of the cover 60 can be prevented, and air can be reliably delivered from the tip 62 of the cover 60. becomes possible.
  • the thickness of the flexible portion 65 may be set to be greater than that of the flexible portion 15 of the first embodiment, depending on the operation specifications of the connecting portion 40. It is also possible to make it thicker.
  • the flexible portion 15 may be made of a material different from that of the root portion 11 and the tip portion 12 and may be configured to have higher flexibility than the root portion 11 and the tip portion 12 .
  • FIG. 8 is a perspective view showing the configuration of the cover 110 according to the second embodiment
  • FIG. 9 is a cross-sectional view taken along line BB' of FIG. 10A and 10B are cross-sectional views passing through the central axis AX11 of the cover 110 attached to the surgical instrument 30, and
  • FIG. , (b) shows a state in which the connecting portion 40 is rotated about the rotation axis AX4.
  • the surgical instrument 30 is similar to that of the first embodiment, so the same reference numerals are used for the same members.
  • the cover 110 shown in FIGS. 8 to 10 has a hollow cylindrical shape, and includes a base portion 111, a tip portion 112 located on the opposite side of the base portion 111, and a base portion. It has an intermediate portion 113 between 111 and the tip portion 112, and a fitting protrusion 119 as a root-side fitting portion whose thickness is increased toward the central axis AX11 side. Further, the intermediate portion 113 has a bellows structure in a range corresponding to the two rotation axes AX3 and AX4 of the surgical instrument 30 on the distal end portion 112 side in the direction of the central axis AX11 of the cover 110. A unit 115 is provided.
  • the bellows structure of the flexible portion 115 is provided so that a helical shape centered on the central axis AX11 of the cover 110 is formed along the central axis AX11 and has an outer diameter larger than the outer peripheral surface of the intermediate portion 113. ing.
  • two flexible portions 115 are provided symmetrically with respect to the central axis AX11 so as to occupy half the angular range of the intermediate portion 113 in the circumferential direction D. More specifically, the two flexible portions 115 are provided so as to each occupy an angular range of 90 degrees, and between these flexible portions 115 in the circumferential direction D are the root portion 11 and the tip portion.
  • Two annular portions 116 having the same thickness as 12 and having a common outer peripheral surface are provided symmetrically with respect to the central axis AX11.
  • the root portion 111, the tip portion 112, and the annular portion 116 have the same thickness.
  • This thickness allows the cover 110 to move on the surgical instrument 30 when the cover 110 is attached to the surgical instrument 30, and allows the root portion 111 and the distal end portion 112 to be accurately positioned at predetermined positions. , is set so as to exhibit flexibility to the extent that it can be brought into close contact with the surgical treatment instrument 30 .
  • the flexible portion 115 has a bellows shape so as to exhibit flexibility that does not impede movement when the treatment portion 32 of the surgical instrument 30 rotates about the rotation axes AX3 and AX4.
  • the shape of the folds for example, the thickness in the radial direction, the width in the direction of the central axis AX11, the intervals between the folds, and the like are set.
  • the cover 10 can be expanded and contracted when the base portion 31 and the treatment portion 32 are rotated relative to each other. It is possible to ensure the visibility to the 32 side.
  • the cover 110 can be integrally manufactured by a molding process such as injection molding, compression molding, or press-fit molding, or a method of adding the flexible part 115 by welding or the like after forming parts other than the flexible part 115 by a molding process is also possible. be.
  • the flexible portion 115 coexists with the annular portion 116 in the circumferential direction D, and the range and number thereof are arbitrary according to the configuration of the surgical instrument 30 as long as visibility from the root portion 111 side to the treatment portion 32 side can be ensured.
  • the angular extents of portions 116 need not be identical to each other.
  • the number of flexible portions 115 and the number of annular portions 116 may not be the same. Other actions, effects, and modifications are the same as those of the first embodiment.
  • FIG. 11(a) is a perspective view showing the configuration of a cover 160 according to a modification of the second embodiment, and (b) is a front view of the cover 160.
  • FIG. 12(a) is a perspective view showing a state in which the cover 160 is attached to the surgical instrument 130, and (b) is a front view of the cover 160 of (a).
  • a cover 160 shown in FIGS. 11(a), (b) and FIGS. 12(a), (b) has a hollow tubular shape, and has a base portion 161 and a base portion, similarly to the cover 110 of the second embodiment.
  • a tip portion 162 positioned opposite to 161 and an intermediate portion 163 between the root portion 161 and the tip portion 162 are provided.
  • the bellows-shaped flexible portion 165 has the same thickness as the root portion 161 and the tip portion 162 and has a common outer peripheral surface.
  • An annular portion 166 is provided.
  • a triangular mark 164 directed from the tip portion 162 side to the root portion 161 side is provided on the outer peripheral surface of the root portion 161 .
  • the distal end portion 162 is provided with an extendable portion 167 that enables expansion and contraction of the diameter of the opening 162a in a partial range in the circumferential direction D thereof.
  • two expandable portions 167 are provided so as to be symmetrical in the circumferential direction D with respect to the central axis AX16 of the cover 160.
  • the range in which the elastic portion 167 is provided in the circumferential direction D is the range in which the annular portion 166 is provided, and is provided apart from the flexible portion 165 .
  • the expandable portion 167 is provided in a range from the opening 162a of the tip portion 162 to the annular portion 166 in the direction along the central axis AX16 of the cover 160, and the size in the circumferential direction D decreases toward the root portion 11 side. It has a shape like
  • the expandable portion 167 has a bellows shape that can expand and contract in the circumferential direction D so that the diameter of the opening 162a of the tip portion 162 can be expanded. 162a is brought into close contact with the treatment section 32 of the surgical instrument 30. As shown in FIG. Since the stretchable portion 167 is provided so as to be separated from the flexible portion 165 , it can stretch and shrink independently of the flexible portion 165 , and the flexible portion 165 can also deform independently of the stretchable portion 167 . It is possible.
  • the cover 160 is stretched when the surgical treatment instrument 30 is fitted with the cover 160, making it easier to perform the fitting operation.
  • the expansion/contraction portion 167 is contracted to adhere to the treatment portion 132 and expand/contract according to the movement of the treatment portion 132. Since the contact with the treatment portion 132 is maintained by the expansion and contraction of the portion 167, the insulation can be reliably maintained. Further, by adjusting the degree of close contact, it is possible to obtain effects such as ensuring airtightness with respect to the treatment portion 132, preventing the cover 160 from coming off, and ensuring visibility by suppressing changes in the outer shape of the cover 160.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Robotics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne un élément de recouvrement qui est destiné à un outil de traitement chirurgical, qui peut être placé très précisément à un emplacement prescrit lorsque ledit élément de recouvrement est fixé sur l'outil de traitement chirurgical, et qui assure la visibilité depuis un côté d'extrémité de base vers un côté de partie de traitement.　Un élément de recouvrement selon la présente invention est destiné à recouvrir un outil de traitement chirurgical qui comprend une base, une partie de traitement, et une partie d'accouplement qui accouple la base et la partie de traitement de façon à permettre à la partie de traitement d'être mobile par rapport à la base. L'élément de recouvrement présente une forme cylindrique et comporte : une partie d'extrémité de base qui est disposée en contact étroit avec la circonférence externe de la base ; une partie d'extrémité avant qui est disposée en contact étroit avec une portion de la partie de traitement ; et une partie intermédiaire qui recouvre la partie d'accouplement. La partie intermédiaire présente, dans une plage partielle dans la direction circonférentielle de celle-ci, une section flexible pouvant s'étendre et se contracter en fonction du mouvement de la partie d'accouplement.
PCT/JP2021/022812 2021-06-16 2021-06-16 Élément de recouvrement Ceased WO2022264302A1 (fr)

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PCT/JP2021/022812 WO2022264302A1 (fr) 2021-06-16 2021-06-16 Élément de recouvrement
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03146047A (ja) * 1989-11-01 1991-06-21 Olympus Optical Co Ltd 超音波治療装置
JPH06269459A (ja) * 1993-01-29 1994-09-27 Smith & Nephew Dyonics Inc 動力で回転する湾曲器具
WO2019150111A1 (fr) * 2018-01-30 2019-08-08 Cmr Surgical Limited Champ opératoire
JP2019195402A (ja) * 2018-05-08 2019-11-14 リバーフィールド株式会社 外科処置具用カバー

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020151848A1 (en) * 2001-04-11 2002-10-17 Capote Dagoberto T. Protective cover for an elongated instrument
JP5809263B2 (ja) * 2010-07-09 2015-11-10 インテュイティブ サージカル オペレーションズ， インコーポレイテッド 電気手術ツールカバー

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03146047A (ja) * 1989-11-01 1991-06-21 Olympus Optical Co Ltd 超音波治療装置
JPH06269459A (ja) * 1993-01-29 1994-09-27 Smith & Nephew Dyonics Inc 動力で回転する湾曲器具
WO2019150111A1 (fr) * 2018-01-30 2019-08-08 Cmr Surgical Limited Champ opératoire
JP2019195402A (ja) * 2018-05-08 2019-11-14 リバーフィールド株式会社 外科処置具用カバー

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JPWO2022264302A1 (fr) 2022-12-22

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