WO2023234011A1 - 穿刺針 - Google Patents
穿刺針 Download PDFInfo
- Publication number
- WO2023234011A1 WO2023234011A1 PCT/JP2023/018321 JP2023018321W WO2023234011A1 WO 2023234011 A1 WO2023234011 A1 WO 2023234011A1 JP 2023018321 W JP2023018321 W JP 2023018321W WO 2023234011 A1 WO2023234011 A1 WO 2023234011A1
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- WO
- WIPO (PCT)
- Prior art keywords
- puncture needle
- main body
- tip
- groove
- needle
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Clinical applications
- A61B8/0833—Clinical applications involving detecting or locating foreign bodies or organic structures
- A61B8/0841—Clinical applications involving detecting or locating foreign bodies or organic structures for locating instruments
-
- 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
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3286—Needle tip design, e.g. for improved penetration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/329—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/46—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for controlling depth of insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
-
- 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
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0807—Indication means
-
- 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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3925—Markers, e.g. radio-opaque or breast lesions markers ultrasonic
Definitions
- the present disclosure relates to a puncture needle.
- Patent Document 1 discloses an ultrasonic device in which a plurality of depressions are formed on the outer peripheral surface near the tip of a needle tube that is punctured into living tissue to increase the reflection intensity of ultrasonic echoes.
- An endoscopic puncture needle is disclosed.
- each recess is provided with an ultrasound reflecting surface that is formed diagonally backward from the surface of the needle tube toward the inside thereof, and also has an ultrasound reflecting surface that is formed in a direction perpendicular to the ultrasound reflecting surface.
- the wall of the needle tube is removed so that the space is not obstructed by the wall of the needle tube.
- This puncture needle for ultrasound endoscopes is said to be able to effectively increase the ultrasound echoes at the tip of the needle tube that is punctured into living tissue, making it possible to obtain clear ultrasound echo images of the needle tube. .
- Patent Document 2 JP 2011-125632A discloses an ultrasound-guided puncture needle for puncturing while detecting the position using reflection of ultrasound, and an indwelling needle having the same.
- This puncture needle has a groove on its outer circumferential surface that reflects ultrasonic waves.
- the groove includes a first groove provided on the outer circumferential surface on the back side of the blade surface, and a second groove provided on the outer circumferential surface near the tip where the blade surface is formed.
- the first groove extends in the circumferential direction, both ends thereof face the blade surface, and a plurality of first grooves are provided in the axial direction of the puncture needle.
- This puncture needle is said to be able to reflect ultrasonic waves more effectively, thereby making it possible to confirm the position within the body with certainty and high precision.
- the present disclosure has been made in view of the above circumstances, and the purpose thereof is to provide a puncture needle that can ensure the echo visibility of the puncture needle and further determine the puncture length. .
- the puncture needle according to the present disclosure for achieving the above purpose is: A rod-shaped main body, a first ultrasonic reflecting structure formed on the main body; a second ultrasonic reflecting structure formed on the main body and disposed closer to the proximal end in the axial direction of the main body than the first ultrasonic reflecting structure; The second ultrasonic reflection structure is spaced apart from the first ultrasonic reflection structure in the axial direction.
- the puncture needle according to the present disclosure further includes:
- the main body portion has a rod-shaped body portion and a needle tip portion disposed at the tip of the body portion, the first ultrasonic reflecting structure is disposed at the needle tip;
- the second ultrasonic reflecting structure may be disposed on the trunk.
- the puncture needle according to the present disclosure further includes:
- the first ultrasonic reflecting structure may be arranged at the tip of the needle tip.
- the puncture needle according to the present disclosure further includes:
- the second ultrasonic reflecting structure may be a spiral groove formed on the outer circumferential surface of the trunk.
- the puncture needle according to the present disclosure further includes:
- the needle tip portion may have a cone-like shape.
- the puncture needle according to the present disclosure further includes:
- the body portion is formed in a cylindrical shape,
- the needle tip portion may have an opening that communicates an internal space and an external space of the body.
- FIG. 3 is a side view of the needle tip portion of the puncture needle according to the first embodiment. It is a figure explaining the aspect of reflection of an ultrasonic wave in a first ultrasonic reflection structure (first structure). It is an explanatory view of a first structure when it is constituted by a transverse groove. It is an explanatory view of a first structure when it is constituted by intersecting grooves. It is an explanatory view of a first structure in the case of being constituted by a circular depression. It is an explanatory view of a first structure in the case of being constituted by a triangular depression.
- FIG. 3 is an explanatory diagram of a reflective structure section formed of a spiral groove. It is an explanatory view of a reflection structure part when it is constituted by an annular groove. It is an explanatory view of a reflection structure part when it is constituted by a plurality of annular grooves.
- FIG. 3 is an explanatory diagram of a reflection structure section formed by a dotted circular groove.
- FIG. 3 is an explanatory diagram of a reflection structure section formed by an annular diagonal groove. It is an explanatory view of a reflection structure part when it is constituted by circular arc array grooves.
- FIG. 3 is an explanatory diagram of a reflective structure section formed of a spiral groove. It is an explanatory view of a reflection structure part when it is constituted by an annular groove. It is an explanatory view of a reflection structure part when it is constituted by a plurality of annular grooves.
- FIG. 3 is an explanatory diagram of a reflection structure section formed by a dotted circular groove
- FIG. 7 is a side view of the needle tip portion of the puncture needle according to the second embodiment, viewed from the blade surface side.
- FIG. 7 is a side view of the needle tip portion of the puncture needle according to the second embodiment, viewed from the side opposite to the blade surface. It is an explanatory view when a first structure constituted by a V-shaped groove is formed on an exposed inner surface. It is an explanatory view when a first structure constituted by a circular depression is formed on an exposed inner surface. It is an explanatory view when the first structure constituted by the groove formed from the first blade surface part to the second blade surface part via the exposed inner surface is formed on the exposed inner surface. It is an explanatory view when a first structure constituted by a triangular depression is formed on an exposed inner surface.
- FIG. 3 is an explanatory diagram of a case where a first structure constituted by a groove along a spiral shape is formed on the outer surface of the needle tip portion.
- FIG. 7 is an explanatory diagram of another case in which a first structure constituted by a groove along a spiral shape is formed on the outer surface of the needle tip portion.
- FIG. 4 is an explanatory diagram of a case where a plurality of grooves along the circumferential direction of the trunk are arranged at equal intervals along the axial direction to constitute the first structure 4.
- FIG. FIG. 7 is a side view of a puncture needle according to a third embodiment.
- FIG. 1 shows a puncture needle 100 according to this embodiment.
- FIG. 1 is a perspective view of the side surface of the main body 1 viewed from the distal end side of the puncture needle 100 in a diagonal direction with respect to the axis G of the main body 1.
- the puncture needle 100 includes a rod-shaped main body 1 , a first ultrasonic reflecting structure 4 formed on the main body 1 , and a first ultrasonic reflecting structure 4 formed on the main body 1 . a second ultrasonic reflecting structure 5 disposed on the proximal end side in the axial direction (direction along the axis G of the main body part 1).
- the second ultrasonic reflection structure 5 is spaced apart from the first ultrasonic reflection structure 4 in the axial direction.
- the first ultrasonic reflection structure 4 and the second ultrasonic reflection structure 5 will be described later.
- the main body 1 has a rod-shaped body 2 and a needle tip 3 disposed at the tip of the body 2.
- the axial center of the trunk 2 overlaps the axial center G of the main body 1, and the axial direction of the trunk 2 is the same as the axial direction of the main body 1.
- the circumferential direction of the main body portion 1 (circumferential direction centered on the axial direction) is the same as the circumferential direction of the body portion 2.
- the needle tip portion 3 is the tip of the body portion 2 .
- the axial direction of the main body portion 1 and the same direction may be simply referred to as the axial direction.
- the circumferential direction of the main body portion 1 and the same direction may be simply referred to as the circumferential direction.
- the main body portion 1 can be formed of, for example, a metal alloy such as stainless steel, a titanium alloy, or a cobalt-chromium alloy, a fluororesin such as polytetrafluoroethylene, or a resin such as nylon.
- the main body part 1 may be solid, or may have a cylindrical shape in which a space is continuously formed along the axis G inside the main body part 1.
- the body portion 2 is, for example, rod-shaped and cylindrical.
- the body portion 2 may be solid or hollow (for example, cylindrical). In the present embodiment, a case where the body section 2 is hollow will be described below as an example.
- the needle tip portion 3 is arranged at the tip of the body portion 2, as described above.
- the needle tip portion 3 has, for example, a cone-like shape.
- An example of the pyramidal shape is a conical shape or a polygonal pyramid shape including a plurality of flat parts on the side surface.
- Examples of the polygonal pyramid shape are a triangular pyramid shape, a quadrangular pyramid shape, and a pyramid shape with five or more angles.
- FIG. 1 shows an example in which the needle tip 3 has a triangular pyramid shape. That is, the needle tip portion 3 in this embodiment has three flat portions 31 on its side surface. In the axial direction of the main body portion 1, among the base end portions of each of the flat portions 31, the body portion 2 located on the distal side of the base end portion on the most proximal end side is the needle tip portion 3.
- the needle tip 3 in the shape of a polygonal pyramid such as a triangular pyramid is formed by, for example, cutting or polishing the tip of a rod-shaped material that will become the main body 1 to form a flat part that will become the flat part 31 of the polygonal pyramid. be able to.
- the corner portion of the side surface of the needle tip portion 3, that is, the boundary between adjacent flat portions 31, 31 of the side surface in the shape of a polygonal pyramid (triangular pyramid in this embodiment) is from the apex T (the tip of the puncture needle 100).
- the blade portion 3A extends toward the side surface of the main body portion 1.
- the first ultrasonic reflection structure 4 receives ultrasonic waves W (see FIG. 3) irradiated by an ultrasonic image diagnostic device (hereinafter sometimes referred to as an echo device). It is a three-dimensional ultrasonic reflecting structure that changes the direction and intensity of reflection. The reflection of the ultrasonic wave W in the first structure 4 will be described later.
- the first structure 4 is arranged at the needle tip portion 3.
- the first structure 4 is preferably arranged at the tip of the needle point 3, as described below.
- the first structure 4 is preferably arranged in a predetermined area on the surface of at least one flat part 31 in the needle tip part 3. This improves the echo visibility of the needle tip portion 3. By improving the echo visibility of the needle tip 3, the accuracy of puncturing in the procedure is improved.
- the first structure 4 may be arranged on all the plane parts 31 or on some plane parts among all the plane parts 31. Since the needle tip part 3 includes a flat part 31 where the first structure 4 is arranged and a flat part 31 where the first structure 4 is not arranged, the main body part 1 (puncture needle 100) in the circumferential direction (body surface, that is, the direction with respect to the probe of the echo device) in some cases.
- the flat portion 31 is a triangular region located on the tip side. and an elliptical or parabolic region with a partially missing portion located on the proximal end side of this triangular region.
- points located at the boundary between a triangular region and a partially missing elliptical or parabolic region in the outer peripheral shape of the plane portion 31 are shown as boundary points P and P. .
- the first structure 4 be disposed at the tip of the flat portion 31 (i.e., the tip of the needle tip 3). This improves the echo visibility of the tip of the needle tip portion 3. By improving the echo visibility of the tip of the needle tip 3, the accuracy of puncturing in the procedure is further improved.
- the first structure 4 may be placed closer to the tip side than the line connecting the boundary points P and P. Note that the first structure 4 may extend from the distal side of the line connecting the boundary points P to the proximal side of the line connecting the boundary points P and P.
- the first structure 4 is preferably formed in the plane part 31, avoiding the vicinity of the blade part 3A. Thereby, it is possible to maintain the sharpness of the blade portion 3A during puncturing with the puncturing needle 100, and to ensure good puncturing performance.
- the first structure 4 transmits the ultrasonic waves W incident from a probe (not shown) of an echo device to the flat part 31 where the first structure 4 is not formed. It is possible to reflect the reflected wave W2 with a relatively high intensity in a direction different from the direction of the reflected wave W1 which is reflected with the highest intensity in the region.
- the first structure 4 is a reflected wave of the incident ultrasonic wave W, which is reflected from a region of the plane portion 31 where the first structure 4 is not formed in a direction along the incident direction of the ultrasonic wave W.
- the reflected wave W2 can be reflected in a direction along the incident direction of the ultrasonic wave W with a stronger intensity than the reflected wave W3.
- the first structure 4 is arranged on the plane part 31, as shown in FIG.
- the echo visibility of the needle tip 3 is improved, making it possible to accurately determine the position of the needle tip using the echo. This improves puncturing accuracy during the procedure.
- the first structure 4 may have a three-dimensional shape such as an uneven shape as a structure that changes the direction and intensity in which the ultrasonic wave W (see FIG. 3) is reflected.
- the uneven shape is, for example, a shape that is a combination of depressions, hollows, grooves, and the like.
- a specific example of the first structure 4 is a groove shape (for example, see FIG. 4).
- the method or processing method for forming the first structure 4 is not limited, and laser processing, cutting, rolling, pressing, etc. may be employed.
- the groove width can be, for example, 30 ⁇ m or more and 100 ⁇ m or less (65 ⁇ m as an example).
- FIG. 4 shows a case where a plurality of (three in this embodiment) lateral grooves 41 are formed on the plane part 31 in a direction perpendicular to the axis G as the first structure 4. .
- the lateral grooves 41 are arranged, for example, at regular intervals along the axial direction. Regarding the length of each lateral groove 41 in the direction intersecting the axis G, the length of the lateral groove 41 located on the proximal end side is longer than that on the distal end side.
- the lateral groove 41 By forming the lateral groove 41 in a direction perpendicular to the axis G, when performing a procedure such as puncturing while observing with an echo from the proximal end of the puncture needle 100, it is possible to see from the body surface side of the living body punctured with the puncture needle 100.
- the ultrasonic waves emitted by the echo are reflected back to the body surface with a strong intensity, improving the visibility of the echo, making it possible to accurately determine the position of the needle tip using the echo.
- first structure 4 includes intersecting groove shapes (see Figure 5), multiple small depressions (e.g. dimples and engravings, see Figures 6 and 7), roughened surfaces by blasting, etc. .
- the first structure 4 may be formed of a plurality of intersecting grooves 42 that intersect with each other.
- each intersecting groove 42 intersects with the axial direction.
- Each intersecting groove 42 intersects with one or more other intersecting grooves 42 and may be shaped like a lattice.
- the first structure 4 may be formed by arranging a plurality of circular depressions 43 that are dimple-shaped depressions.
- the example shown in FIG. 6 shows a case where the first structure 4 is formed by arranging circular depressions 43 in a triangular houndstooth check pattern.
- the first structure 4 may be formed by arranging a plurality of triangular depressions 44 as an example of an engraved depression.
- the example shown in FIG. 7 shows a case where the first structure 4 is formed by arranging the triangular depressions 44 in a triangular staggered pattern.
- the second ultrasonic reflecting structure 5 (hereinafter referred to as the second structure 5) changes the direction and intensity in which the ultrasonic wave W (see FIG. 8) irradiated by the echo device is reflected. It is a three-dimensional ultrasound reflecting structure. The reflection of the ultrasonic wave W in the second structure 5 will be described later.
- the second structure 5 may be arranged on the body 2.
- the second structure 5 is formed on an outer surface 20 that is a radially outer surface (outer peripheral surface) of the body portion 2 .
- the second structure 5 is preferably arranged at a predetermined distance from the first structure 4 in the axial direction.
- the distance between the first structure 4 and the second structure 5 is such that the distance between the first structure 4 and the second structure 5 is at least a distance that allows the first structure 4 and the second structure 5 to be observed separately on the echo (for example, 0.6 mm or more). Good to have.
- the extension length of the second structure 5 in the axial direction (distance from the tip to the proximal end of the second structure 5 in the axial direction) is longer than the separation distance L2 between the first structure 4 and the second structure 5, good. This improves the echo visibility of the second structure 5.
- the first structure 4 and the second structure 5 may be more distinguishable.
- the second structure 5 may include a plurality of ultrasonic reflecting structures (hereinafter referred to as reflecting structures 50) spaced apart in the axial direction.
- the second structure 5 includes a first reflective structure 50a (an example of a reflective structure) which is a reflective structure 50 disposed on the distal side, and a first reflective structure 50a (an example of a reflective structure) disposed on the proximal side of the first reflective structure 50a.
- the second reflective structure 50b which is the reflective structure 50 adjacent to the first reflective structure 50a, is included.
- the second structure 5 may further include another reflective structure 50 in addition to the first reflective structure 50a and the second reflective structure 50b. That is, the second structure 5 may include three or more reflective structures 50.
- the reflective structure portion 50 adjacent to the first structure 4 in the axial direction is preferably arranged at a predetermined distance from the first structure 4 in the axial direction.
- the extension length L1 of the reflective structure 50 in the axial direction may be longer than the separation distance L2 between the first structure 4 and the reflective structure 50. This improves the echo visibility of the reflective structure 50. Further, under echo conditions, the first structure 4 and the reflective structure 50 may be more distinguishable. This improves puncturing accuracy in the procedure.
- the extension length L1 may be preferably, for example, 5 mm or more and 10 mm or less, but is not limited thereto.
- the reflective structures 50 that are adjacent to each other in the axial direction may be spaced apart from each other by a predetermined distance in the axial direction. This makes it possible to easily understand the positional relationship between adjacent reflective structures 50 under an echo, ensuring echo visibility of the puncture needle 100, and further making it possible to appropriately understand the puncture length. Become. This improves puncturing accuracy in the procedure.
- the extension length L1 of the reflective structure portion 50 in the axial direction may be longer than the separation distance L3 between adjacent reflective structure portions 50. As a result, the echo visibility of each reflective structure 50 may be improved, and the distinguishability from adjacent reflective structures 50 may be enhanced. This improves puncturing accuracy in the procedure.
- the reflective structure portion 50 may be formed in an annular shape along the circumferential direction on the outer surface 20 of the body portion 2, or may be formed in a portion along the circumferential direction.
- the reflective structure portion 50 When the reflective structure portion 50 is formed in an annular shape along the circumferential direction on the outer surface 20 of the body portion 2, it can be visually recognized by the echo device regardless of the orientation of the main body portion 1 (puncture needle 100) in the circumferential direction. In some cases, this is preferable because it becomes possible.
- the reflective structure portion 50 is formed on a portion of the outer surface 20 of the body portion 2 along the circumferential direction, it may be possible to grasp the orientation of the main body portion 1 (puncture needle 100) in the circumferential direction. This improves puncturing accuracy in the procedure.
- the reflection structure 50 directs the ultrasonic waves W incident from a probe (not shown) of an echo device to the body 2 on which the second structure 5 is not formed, as shown in FIG.
- the outer surface 20 of can reflect a reflected wave W6 with a relatively high intensity in a direction different from the direction of the reflected wave W4 that is reflected with the highest intensity.
- the reflection structure portion 50 is configured to reflect a reflected wave of the incident ultrasonic wave W from the outer surface 20 of the body portion 2 where the first structure 4 is not formed in a direction along the incident direction of the ultrasonic wave W.
- the reflected wave W6 can be reflected in a direction along the incident direction of the ultrasonic wave W with a stronger intensity than the reflected reflected wave W5.
- the second structure 5 (reflective structure section 50) on the outer surface 20 of the body section 2, as shown in FIG.
- the visibility of the echo improves, and this allows the position of the torso 2 to be accurately grasped with the echo. This improves puncturing accuracy during the procedure.
- FIG. 8 shows the first reflective structure 50a as an example of the reflective structure 50, the same applies to the second reflective structure 50b. That is, by understanding the positional relationship between each reflective structure portion 50 (second structure 5) and first structure 4, it is possible to understand the puncture length.
- the reflection structure 50 may have a three-dimensional shape such as an uneven shape as a structure that changes the direction and intensity in which the ultrasonic wave W (see FIG. 8) is reflected.
- the uneven shape is, for example, a shape that is a combination of depressions, hollows, grooves, and the like.
- the method or processing method for forming the reflective structure portion 50 is not limited, and laser processing, cutting, rolling, pressing, etc. may be employed. From the viewpoint of workability, it is preferable that the second structure 5 has a groove shape.
- the groove-shaped pattern of the reflection structure section 50 can adopt various shapes.
- the groove width can be set to, for example, 20 ⁇ m or more and 100 ⁇ m or less (40 ⁇ m as an example).
- FIG. 9 shows a case where a spiral groove 51 extending in the axial direction along the circumferential direction of the body portion 2 is formed as the reflective structure portion 50.
- the spiral groove 51 is formed so as to extend around the outer surface 20 of the body portion 2 two or more times along the circumferential direction.
- a surface portion where no groove is formed along the spiral groove 51 is formed on the outer surface 20 of the body 2.
- the pitch can be set to, for example, 20 ⁇ m or more and 1,000 ⁇ m or less (100 ⁇ m as an example).
- the reflective structure portion 50 has a groove shape
- the following can be exemplified.
- each annular groove 52 is a separate reflective structure 50.
- one reflective structure section 50 is composed of a plurality of annular grooves 52.
- examples include a dotted line circular groove 53 (see FIG. 12) formed along the circumferential direction and interrupted at least at one place in the annular shape, and a case where a plurality of dotted line circular grooves 53 are arranged adjacent to each other in the axial direction (not shown). It will be done.
- each dotted line circular groove 53 is a different reflective structure 50.
- annular diagonal groove 54 in which short diagonal grooves 54a intersecting the circumferential direction and the axial direction are arranged in an annular manner along the circumferential direction, and a plurality of annular diagonal grooves 54 adjacent to each other in the axial direction. (not shown).
- each annular diagonal groove 54 is a separate reflective structure 50.
- two circular arc array grooves 55 formed in an annular shape by arranging a plurality of small circular arc grooves 55a in the circumferential direction are arranged adjacent to each other in the axial direction (see FIG. 14).
- two circular arc array grooves 55 constitute one reflective structure section 50.
- the reflective structure portion 50 may be formed in the form of a large number of small depressions, a rough surface formed by blasting, etc., similarly to the first structure 4.
- the needle tip portion 3 has a conical shape.
- the second embodiment is different in that the needle tip portion 3 has a blade surface portion 6 in which a blade surface 60 that intersects the axis G is formed, and other aspects are the same.
- differences from the first embodiment will be mainly described, and descriptions of common parts with the first embodiment will be omitted as appropriate.
- FIG. 15 and 16 show the needle tip 3 of the puncture needle 100 according to the present embodiment in a side view (radial direction).
- FIG. 15 is a side view of the needle tip portion 3 viewed from the side of the blade surface 60 of the blade surface portion 6.
- FIG. 16 is a side view of the needle tip portion 3 viewed from the side opposite to the blade surface 60 of the blade surface portion 6.
- the body part 2 on the distal side of the base end part of the blade surface 60 is the needle tip part 3.
- the blade surface portion 6 has a first blade surface portion 61, a second blade surface portion 62, and a third blade surface portion 63 as the blade surface 60.
- the third blade surface portion 63 is a surface portion disposed on the base end side of the first blade surface portion 61 or the second blade surface portion 62, and in this embodiment, the third blade surface portion 63 is a surface portion disposed on the base end side of the first blade surface portion 61 and the second blade surface portion 62. placed on the side.
- FIG. 15 shows an example in which the puncture needle 100 is of a so-called lancet type.
- the blade surface 60 is formed with an opening 69 that communicates the internal space and external space of the body 2 .
- an exposed inner surface 29a a part of the inner surface 29, which is the inner surface of the cylinder of the body 2, is exposed to the outside through the opening 69.
- the surface of the inner surface 29 that is closer to the tip than the base end of the opening 69 in the axial direction of the main body 1 will be referred to as an exposed inner surface 29a.
- the first blade surface portion 61 and the second blade surface portion 62 are surface portions disposed closer to the tip side than the third blade surface portion 63.
- the first blade surface part 61 is arranged on the right side when looking from the third blade surface part 63 to the tip side, and the second blade surface part 62 is arranged on the left side when looking from the third blade surface part 63 to the tip side.
- the first blade surface portion 61 and the second blade surface portion 62 are at the same position in the direction along the axis G.
- the first blade surface portion 61 and the second blade surface portion 62 are each inclined toward the outside of the cylinder with respect to the third blade surface portion 63. That is, the first blade surface portion 61 is inclined to the right. Further, the second blade surface portion 62 is inclined to the left.
- the ends of the first blade surface portion 61 and the second blade surface portion 62 on the radially outer side of the main body portion 1 form a blade portion 6A extending from the apex T toward the side surface portion of the main body
- the first structure 4 is arranged, for example, on the blade surface 60, the exposed inner surface 29a, or the outer surface 30 of the needle tip portion 3 of the body portion 2 (the portion of the outer surface 20 located on the needle tip portion 3). good. More specifically, the first structure 4 may be disposed at only one location, only two locations, or all of the blade surface 60, the exposed inner surface 29a, or the outer surface 30. The first structure 4 does not need to be formed on the entire surface of the blade surface 60, the exposed inner surface 29a, or the outer surface 30, and may be formed only on a portion thereof. It is preferable that the first structure 4 is arranged at the tip of the needle tip part 3 similarly to the first embodiment. This improves the echo visibility of the tip of the needle tip portion 3.
- the first structure 4 is located on the distal side of the center Q of the opening 69 in the axial direction. It is preferable that the This improves the echo visibility of the tip of the needle tip portion 3. By improving the echo visibility of the tip of the needle tip 3, the accuracy of puncturing in the procedure is further improved.
- the first structure 4 may extend from the distal side of the center Q to the proximal side of the center Q.
- the first structure 4 can be formed as a groove shape, a dimple shape, or a roughened surface by blasting.
- a plurality of (three in FIG. 17) V-shaped grooves 71 with the apex of the valley located on the tip side are formed on the exposed inner surface 29a, forming the first structure 4. It shows the case.
- the plurality of V-shaped grooves 71 are arranged, for example, at equal intervals along the axial direction.
- FIG. 18 shows a case where a plurality of circular depressions 72, which are dimple-shaped depressions, are formed on the exposed inner surface 29a to constitute the first structure 4.
- the circular depressions 72 may be arranged, for example, in a triangular houndstooth pattern.
- a plurality of grooves 73 along the circumferential direction of the body part 2 are formed from the inner end of the first blade surface part 61 (radially inner end of the body part 2), through the exposed inner surface 29a, to the second blade part 2.
- the plurality of grooves 73 are arranged, for example, at equal intervals along the axial direction.
- the first structure 4 is arranged closer to the tip than the center Q.
- the groove 73 as the first structure 4 is formed avoiding the vicinity of the blade portion 6A. Thereby, it is possible to maintain the sharpness of the blade portion 6A during puncturing with the puncturing needle 100 and ensure good puncturing performance.
- FIG. 20 shows a first structure 4 in which a triangular recess 74 having an isosceles triangular shape with one of its vertices located on the tip side and whose base runs along the circumferential direction is formed on the exposed inner surface 29a. There is.
- the first structure 4 is arranged closer to the tip than the center Q.
- FIGS. 21 to 23 show the case where the first structure 4 is formed on the outer surface 30.
- grooves 75 and 76 are formed in the outer surface 30 along the circumferential direction of the body portion 2 and in a spiral shape extending in the axial direction, thereby forming the first structure 4. Indicates when there is.
- the grooves 76 shown in FIG. 22 have a wider pitch (the intervals along the axial direction are wider) than the grooves 75 shown in FIG. 21.
- FIG. 23 shows a case where a plurality of grooves 77 along the circumferential direction of the trunk portion 2 are arranged, for example, at equal intervals along the axial direction to constitute the first structure 4. In the example shown in FIG. 23, the groove 77 is formed avoiding the vicinity of the blade portion 6A.
- the grooves 75, 76, and 77 can have, for example, a groove width of 20 ⁇ m or more and 100 ⁇ m or less (40 ⁇ m as an example). Further, when a plurality of grooves 75, 76 and grooves 77 are formed, the pitch can be set to 50 ⁇ m or more and 300 ⁇ m or less (100 ⁇ m as an example).
- the needle tip portion 3 has a conical shape, particularly a triangular pyramid shape.
- the third embodiment is different in that the needle tip 3 has a conical shape, and is otherwise similar.
- differences from the first embodiment will be mainly described, and descriptions of common parts with the first embodiment will be omitted as appropriate.
- FIG. 24 shows a side view of the puncture needle 100 according to this embodiment.
- the puncture needle 100 of this embodiment has a needle tip portion 3 having a conical shape.
- a first structure 4 is formed at the tip of the needle tip portion 3 .
- the first structure 4 may be formed, for example, by arranging annular grooves 49 adjacent to each other in the axial direction.
- FIG. 24 shows a case where the second structure 5 includes a plurality of reflective structures 50 formed by one annular groove 52 arranged at equal intervals along the axial direction.
- the present disclosure can be applied to puncture needles.
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Abstract
Description
棒状の本体部と、
前記本体部に形成された、第一超音波反射構造と、
前記本体部に形成されており、前記第一超音波反射構造よりも前記本体部の軸方向における基端側に配置された第二超音波反射構造と、を備え、
前記第二超音波反射構造は、前記第一超音波反射構造と、前記軸方向において離間して配置されている。
前記本体部は、棒状の胴部と、前記胴部の先端に配置された針先部と、を有し、
前記第一超音波反射構造は、前記針先部に配置され、
前記第二超音波反射構造は、前記胴部に配置されてもよい。
前記第一超音波反射構造は、前記針先部の先端部に配置されてもよい。
前記第二超音波反射構造は、前記胴部の外周面に形成されたらせん状溝であってもよい。
前記針先部は、錐体状形状であってもよい。
前記胴部が筒状に形成されており、
前記針先部は、前記胴部の内部空間と外部空間とを連通する開口部を有してもよい。
図1には、本実施形態に係る穿刺針100を示している。図1は、穿刺針100の先端側から、本体部1の軸心Gに対して斜め方向に本体部1の側面を見た斜視図である。
第一実施形態では、針先部3が錐体状形状である場合を説明した。第二実施形態は、針先部3が、軸心Gと交差する刃面60が形成された刃面部6を有する点で異なり、その他は同様である。以下では、第一実施形態との相違点を中心に説明し、第一実施形態との共通部分についての説明は適宜省略する。
第一実施形態では、針先部3が錐体状形状であって、特に三角錐形状ある場合を説明した。第三実施形態は、針先部3が、円錐形状である点で異なり、その他は同様である。以下では、第一実施形態との相違点を中心に説明し、第一実施形態との共通部分についての説明は適宜省略する。
100 :穿刺針
2 :胴部
20 :外表面(外周面)
29 :内表面
29a :露出内表面
3 :針先部
30 :外表面
31 :平面部
3A :刃部
4 :第一構造(第一音超波反射構造)
41 :横溝
42 :交差溝
49 :環状溝
5 :第二構造(第二超音波反射構造)
50 :反射構造部
50a :第一反射構造部
50b :第二反射構造部
51 :らせん状溝
52 :環状溝
53 :点線円溝
54 :環状斜め線溝
54a :斜め線溝
55 :円弧配列溝
55a :溝
6 :刃面部
60 :刃面
61 :第一刃面部
62 :第二刃面部
63 :第三刃面部
69 :開口部
6A :刃部
71 :V字溝
72 :円形状窪み
73 :溝
74 :三角形状窪み
75 :溝
76 :溝
77 :溝
G :軸心
L1 :延在長さ
L2 :離間距離
L3 :離間距離
P :境界点
Q :中心
T :頂点
W :超音波
W1 :反射波
W2 :反射波
W3 :反射波
W4 :反射波
W5 :反射波
W6 :反射波
Claims (6)
- 棒状の本体部と、
前記本体部に形成された、第一超音波反射構造と、
前記本体部に形成されており、前記第一超音波反射構造よりも前記本体部の軸方向における基端側に配置された第二超音波反射構造と、を備え、
前記第二超音波反射構造は、前記第一超音波反射構造と、前記軸方向において離間して配置されている穿刺針。 - 前記本体部は、棒状の胴部と、前記胴部の先端に配置された針先部と、を有し、
前記第一超音波反射構造は、前記針先部に配置され、
前記第二超音波反射構造は、前記胴部に配置されている請求項1に記載の穿刺針。 - 前記第一超音波反射構造は、前記針先部の先端部に配置されている請求項2に記載の穿刺針。
- 前記第二超音波反射構造は、前記胴部の外周面に形成されたらせん状溝である請求項2又は3に記載の穿刺針。
- 前記針先部は、錐体状形状である請求項2から4の何れか一項に記載の穿刺針。
- 前記胴部が筒状に形成されており、
前記針先部は、前記胴部の内部空間と外部空間とを連通する開口部を有する請求項2から5の何れか一項に記載の穿刺針。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23815771.3A EP4491138A4 (en) | 2022-05-31 | 2023-05-16 | PUNCTURE NEEDLE |
| JP2024524316A JPWO2023234011A1 (ja) | 2022-05-31 | 2023-05-16 | |
| CN202380042695.7A CN119277998A (zh) | 2022-05-31 | 2023-05-16 | 穿刺针 |
| US18/962,124 US20250090195A1 (en) | 2022-05-31 | 2024-11-27 | Puncture needle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-089075 | 2022-05-31 | ||
| JP2022089075 | 2022-05-31 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/962,124 Continuation US20250090195A1 (en) | 2022-05-31 | 2024-11-27 | Puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023234011A1 true WO2023234011A1 (ja) | 2023-12-07 |
Family
ID=89026497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/018321 Ceased WO2023234011A1 (ja) | 2022-05-31 | 2023-05-16 | 穿刺針 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250090195A1 (ja) |
| EP (1) | EP4491138A4 (ja) |
| JP (1) | JPWO2023234011A1 (ja) |
| CN (1) | CN119277998A (ja) |
| WO (1) | WO2023234011A1 (ja) |
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| JP2009165822A (ja) * | 2008-01-14 | 2009-07-30 | Olympus Medical Systems Corp | 内視鏡用処置具 |
| JP2010190413A (ja) | 2009-02-20 | 2010-09-02 | Asahi Kiso Kk | 動力伝動用チェーン及びチェーン伝動装置及び沈殿物掻寄装置 |
| JP2011125632A (ja) | 2009-12-21 | 2011-06-30 | Terumo Corp | 超音波ガイド穿刺針及び留置針 |
| WO2012165303A1 (ja) * | 2011-05-27 | 2012-12-06 | オリンパスメディカルシステムズ株式会社 | 超音波用穿刺針 |
| WO2016148882A1 (en) * | 2015-03-17 | 2016-09-22 | SPIRATION, INC., d/b/a OLYMPUS RESPIRATORY AMERICA | Improved needle scribe at tip |
| US20160302865A1 (en) * | 2012-06-26 | 2016-10-20 | Covidien Lp | Methods and systems for enhancing ultrasonic visibilty of energy-delivery devices within tissue |
| US20170112464A1 (en) * | 2015-10-26 | 2017-04-27 | Smiths Medical Asd, Inc. | Echogenic needle |
| US20180243000A1 (en) * | 2016-02-08 | 2018-08-30 | Injectimed, Inc. | Echogenic needles and methods for manufacturing echogenic needles |
| CN211131308U (zh) * | 2019-10-22 | 2020-07-31 | 广东省第二人民医院(广东省卫生应急医院) | 一种穿刺套件 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5618835B2 (ja) * | 2008-02-05 | 2014-11-05 | クック メディカル テクノロジーズ エルエルシーCook Medical Technologies Llc | 細長い医療装置を内視鏡と関連して方向付けるためのアダプタを備えるアダプタシステム |
| EP3367936B1 (en) * | 2015-10-26 | 2023-09-06 | Smiths Medical International Limited | Echogenic needle assemblies |
-
2023
- 2023-05-16 CN CN202380042695.7A patent/CN119277998A/zh active Pending
- 2023-05-16 JP JP2024524316A patent/JPWO2023234011A1/ja active Pending
- 2023-05-16 WO PCT/JP2023/018321 patent/WO2023234011A1/ja not_active Ceased
- 2023-05-16 EP EP23815771.3A patent/EP4491138A4/en active Pending
-
2024
- 2024-11-27 US US18/962,124 patent/US20250090195A1/en active Pending
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|---|---|---|---|---|
| JP2009165822A (ja) * | 2008-01-14 | 2009-07-30 | Olympus Medical Systems Corp | 内視鏡用処置具 |
| JP2010190413A (ja) | 2009-02-20 | 2010-09-02 | Asahi Kiso Kk | 動力伝動用チェーン及びチェーン伝動装置及び沈殿物掻寄装置 |
| JP2011125632A (ja) | 2009-12-21 | 2011-06-30 | Terumo Corp | 超音波ガイド穿刺針及び留置針 |
| WO2012165303A1 (ja) * | 2011-05-27 | 2012-12-06 | オリンパスメディカルシステムズ株式会社 | 超音波用穿刺針 |
| US20160302865A1 (en) * | 2012-06-26 | 2016-10-20 | Covidien Lp | Methods and systems for enhancing ultrasonic visibilty of energy-delivery devices within tissue |
| WO2016148882A1 (en) * | 2015-03-17 | 2016-09-22 | SPIRATION, INC., d/b/a OLYMPUS RESPIRATORY AMERICA | Improved needle scribe at tip |
| US20170112464A1 (en) * | 2015-10-26 | 2017-04-27 | Smiths Medical Asd, Inc. | Echogenic needle |
| US20180243000A1 (en) * | 2016-02-08 | 2018-08-30 | Injectimed, Inc. | Echogenic needles and methods for manufacturing echogenic needles |
| CN211131308U (zh) * | 2019-10-22 | 2020-07-31 | 广东省第二人民医院(广东省卫生应急医院) | 一种穿刺套件 |
Non-Patent Citations (1)
| Title |
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| See also references of EP4491138A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4491138A4 (en) | 2025-07-02 |
| JPWO2023234011A1 (ja) | 2023-12-07 |
| CN119277998A (zh) | 2025-01-07 |
| US20250090195A1 (en) | 2025-03-20 |
| EP4491138A1 (en) | 2025-01-15 |
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