JP6398028B1 - Puncture needle holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a puncture needle holder capable of changing the posture of a puncture needle by operating a finger and fixing the posture of the puncture needle to a desired posture with the same finger.
A puncture needle holder 101 has a base 1, a needle insertion tube 7, a pair of support members 3, 5 and a screw body 9. The pedestal 1 is placed on the body surface of a patient or the like and has an opening 21 through which a puncture needle can be inserted. The needle insertion cylinder 7 holds a puncture needle to be inserted. The support members 3 and 5 are each semi-circularly curved, and both end portions of the support members 3 and 5 are rotatably supported by the pedestal 1 so as to intersect with each other, and the needle insertion cylinders 7 are slid in the circumferential direction of both. Support at both intersections so that it can move. The screw body 9 is screwed into the needle insertion tube 7 at the outer side in the radial direction of the intersecting portion and loosened to freely slide the needle insertion tube 7 with respect to the support members 3 and 5, and by tightening, the support members 3 and 5 are tightened. And the needle insertion cylinder 7 are fastened.
[Selection] Figure 1

Description

  The present invention relates to a puncture needle holder for holding a puncture needle such as a biopsy needle.

  A biopsy needle is a device that removes the tissue of a target site by inserting it into the target site such as an affected area inside the body from the body surface of a patient or subject (hereinafter referred to as “patient etc.”). In general, it is a type of puncture needle that is a medical instrument that is inserted into the body from the body surface of a patient or the like. The biopsy needle holder is used to use a biopsy needle, and is an instrument that is placed on the body surface of a patient or the like and holds the biopsy needle in a predetermined position and posture. When using a biopsy needle, a doctor, a nurse, or the like uses a CT scan device to image a target site such as an affected area inside the body, and determines the position and posture of the biopsy needle while viewing a screen on which the image is displayed. In order to avoid exposure of the fingers to the fingers by the X-rays emitted by the CT scanning device, the biopsy needle holder holds the biopsy needle in a predetermined posture even if the doctors release their hands from the biopsy needle. It is desired to be a holding type. At the same time, it is desirable that the posture of the biopsy needle can be changed so that the tip of the biopsy needle is appropriately positioned in the affected area or the like.

  Conventional techniques disclosed in Patent Documents 1 and 2 are known to provide such a biopsy needle holder. In the biopsy needle holder disclosed in Patent Document 1, both ends of an arc-shaped guide are rotatably supported by a pedestal, and the rotational position is held by a frictional force to hold the biopsy needle. A screw body is provided that is slidably supported by the guide so as to be tiltable in an arbitrary direction around the lower end portion, and that restrains the needle insertion cylinder so as to be releasable by the guide. According to this prior art, the tilting position can be maintained by tilting the needle insertion tube through which the biopsy needle is inserted into an appropriate direction by a finger operation of one hand and tightening the screw body with the finger. However, the needle insertion cylinder can be fixed to the guide by tightening the screw body. However, since the guide holds the rotational position with respect to the pedestal by friction, the posture of the needle insertion cylinder is changed. There was a problem that it could not be fixed.

  In the biopsy needle holder disclosed in Patent Document 2, the engagement mechanism for holding the biopsy needle is supported in an arbitrary orientation by being individually supported by the pedestal so that the pair of arcuate guides cross each other. It is slidably supported at the intersection of the guides so that it can tilt. The pair of arcuate guides can be arbitrarily changed in rotational position by being driven by a remotely operated motor. The engagement mechanism is also driven by a motor, so that the biopsy needle can be clamped or released, or can be moved forward and backward while the biopsy needle is clamped (for example, the description above) , Paragraphs 0009, 0010, 0014, 0023, and abstract). As described above, the biopsy needle holder disclosed in Patent Document 2 holds the biopsy needle so that the posture can be changed by a remotely operated motor. However, there is a problem that it is necessary to connect and use a complicated and expensive device such as a motor and its control device. In addition, the biopsy needle holder disclosed in Patent Document 2 has a problem in that the biopsy needle is held by a roller, so that the posture stability of the biopsy needle is poor.

  Furthermore, in the biopsy needle holder disclosed in Patent Documents 1 and 2, the planar outer peripheral contour shape of the pedestal placed on the body surface of a patient or the like is a circular shape having an outward protrusion on a part along the circumference. Or since it is oval, there existed a problem that it did not fit well on the human body surface which has irregular unevenness | corrugation.

JP 2004-283420 A Special table 2008-528197

  The present invention has been made in view of the above problems, and the posture of a puncture needle such as a biopsy needle can be changed by operating a finger, and the posture of the puncture needle can be fixed to a desired posture with the same finger. An object of the present invention is to provide a puncture needle holder that enables the above. It is another object of the present invention to provide a puncture needle holder that is easy to adjust to irregularities on the body surface of a patient or the like.

  In order to solve the above problems and achieve the above object, a first aspect of the present invention is a puncture needle holder, a pedestal, a needle insertion tube, a pair of support members, a screw body, . The pedestal is for mounting on the body surface of the patient or subject and has an opening through which the puncture needle can be inserted. The needle insertion cylinder holds the puncture needle to be inserted. The pair of support members are each curved in a semicircular shape, and both end portions thereof are rotatably supported by the pedestal so as to cross each other, and the needle insertion cylinders are slid in the respective circumferential directions. Support at both intersections as possible. The screw body is screwed into the needle insertion tube outside the intersecting portion in the radial direction and loosened to freely slide the needle insertion tube relative to the pair of support members, and the pair of support members by tightening. And the needle insertion tube are fastened.

  According to this configuration, the puncture needle has a desirable posture in a state where the pedestal is placed on the body surface of the patient or the subject (patient etc.), the puncture needle is inserted into the needle insertion tube, and the screw body is loosened. Thus, the needle insertion tube can be tilted in all directions by the fingers. When the puncture needle is in a desired posture, the needle insertion tube can be fixed to both support members simply by tightening the screw body with the same finger, thereby fixing the posture of the puncture needle.

  The second aspect of the present invention is the puncture needle holder according to the first aspect, wherein the needle insertion tube extends to the intersection of the rotation shafts of the pair of support members, The pedestal supports the needle insertion tube so that it can be tilted in all directions at the intersection of the rotation axes.

  According to this configuration, since the posture of the needle insertion tube is further stabilized, the posture of the puncture needle held by the needle insertion tube is further stabilized.

  According to a third aspect of the present invention, there is provided a puncture needle holder according to the first or second aspect, wherein the puncture needle holder is detachable from the hollow portion of the needle insertion tube and slides through the inserted puncture needle. A cylindrical needle holder that can be held is further provided. And the said needle holding body and the said needle insertion cylinder have the latching | locking part which latches the said needle holding body with which the said hollow part was mounted | worn releasably to the said needle penetration cylinder. The needle holder is a film body that covers the bottom of the hollow portion, and has a film body that is pierced by pressing the inserted puncture needle.

  According to this configuration, by holding the puncture needle on the needle holder attached to the needle insertion cylinder without piercing the membrane body, the needle tip of the puncture needle floats from the body surface of the patient, etc. It is possible to adjust the posture of the puncture needle. By pressing the puncture needle after the posture is determined, the needle tip of the puncture needle can reach the target site inside the body of the patient or the like through the membrane while maintaining the predetermined posture. Further, by preparing a needle holder having a different inner diameter corresponding to a puncture needle having a different thickness, it is possible to handle a puncture needle having a different thickness without changing the remaining portion of the puncture needle holder. .

According to a fourth aspect of the present invention, there is provided a puncture needle holder according to any one of the first to third aspects, wherein the needle insertion tube is attached to at least one of the pair of support members. In the part which slides, it has a rotation stop member which stops rotation around a cylinder axis by the at least one support member.
According to this configuration, when the screw body is tightened or loosened, the needle insertion tube is effectively prevented from rotating (both rotating), so that the operation of the screw body becomes easier.

According to a fifth aspect of the present invention, there is provided a puncture needle holder according to any one of the first to fourth aspects, wherein the planar outer peripheral contour shape of the pedestal has both a rotational symmetry axis and a line symmetry axis. It is an asymmetric variant that does not exist.
According to this configuration, even if there are irregular irregularities on the body surface of a patient or the like, the position at which the pedestal becomes familiar with the irregularities can be found by rotating the pedestal. That is, a puncture needle holder that is easy to adjust to the unevenness of the body of a patient or the like is realized.

  According to a sixth aspect of the present invention, there is provided a puncture needle holder, a pedestal for placing on a body surface of a patient or a subject, and a puncture provided on the pedestal and supporting the puncture needle A needle support portion. And the planar outer periphery outline shape of the said base is an asymmetrical variant in which neither a rotational symmetry axis nor a line symmetry axis exists.

  According to this configuration, even if there are irregular irregularities on the body surface of a patient or the like, the position at which the pedestal becomes familiar with the irregularities can be found by rotating the pedestal. That is, a puncture needle holder that is easy to adjust to the unevenness of the body of a patient or the like is realized.

  As described above, according to the present invention, there is provided a puncture needle holder that can change the posture of a puncture needle by operating a finger and can fix the posture of the puncture needle to a desired posture with the same finger. Realize. In addition, according to the present invention, a puncture needle holder that is easily adapted to unevenness on the body surface of a patient or the like is realized.

It is a perspective view of the puncture needle holder by one embodiment of the present invention. It is a front longitudinal cross-sectional view of the puncture needle holder of FIG. It is a perspective view of the base of the puncture needle holder of FIG. It is a perspective view of the support member of the puncture needle holder of FIG. It is a perspective view of the puncture needle holder of FIG. 1 when the needle insertion tube is inclined. It is a top view of a part of puncture needle holder of FIG. It is a longitudinal cross-sectional view of the needle insertion cylinder of the puncture needle holder of FIG. It is a perspective view which illustrates another shape of a base about the puncture needle holder of FIG. It is a perspective view which illustrates another shape of a base about the puncture needle holder of Drawing 1. It is a perspective view which illustrates another shape of a base about the puncture needle holder of Drawing 1. It is a perspective view which illustrates another shape of a base about the puncture needle holder of Drawing 1. It is a top view which illustrates another plane outer periphery outline shape about the base of the puncture needle holder of Drawing 1.

  FIG. 1 is a perspective view of a puncture needle holder according to an embodiment of the present invention. FIG. 2 is a front longitudinal sectional view of the puncture needle holder of FIG. The puncture needle holder 101 is configured as a biopsy needle holder that holds a biopsy needle, and includes a base 1, a pair of support members 3 and 5, a needle insertion cylinder 7, and a screw body 9. The structure of the base 1 is also represented in the perspective view of FIG. Similarly, the structure of the support member 3 is also shown in the perspective view of FIG. Hereinafter, the structure of the puncture needle holder 101 will be described with reference to FIGS.

  The pedestal 1 has a substrate portion 11 placed on the body surface of a patient or the like, and a bridging portion 13 erected on the substrate portion 11. In the illustrated example, the substrate portion 11 is an annular plate-like body that surrounds the circular opening portion 15, and the planar outer peripheral contour shape thereof has irregularities repeated in a form similar to the contour of a petal. Such unevenness has an advantage that when the puncture needle holder 101 is placed on the body surface of a patient or the like having irregular unevenness, the posture is easily adjusted and the posture is easily stabilized.

  The bridging portion 13 is connected to the substrate portion 11 so as to straddle the opening 15. In the illustrated example, the bridging portion 13 includes a rising portion 17 that is erected along the inner periphery of the substrate portion 11, and a recessed portion 19 that is supported by the rising portion 17 by being connected to the upper end portion of the rising portion 17. have. In the example shown in the figure, the rising portion 17 is formed in an annular shape formed by cutting a spherical shell, and the recessed portion 19 is a portion of the upper end portion of the rising portion 17 that faces the opening 15 therebetween. It is formed so as to connect each other. The recessed part 19 is recessed so that the center part becomes the lowest. An opening 21 is formed at the center of the recessed bottom portion of the recessed portion 19. The opening 21 has a spherical side wall (see FIG. 2) and receives the spherical lower end 22 of the needle insertion tube 7 to support the needle insertion tube 7 so that it can tilt in all directions. . The opening 21 corresponds to an example of “an opening through which a puncture needle can be inserted” included in the “pedestal” in one embodiment of the present invention.

  The bridging part 13 straddling the opening 15 and supporting the needle insertion cylinder 7 so as to be tiltable is constituted by the rising part 17 and the recessed part 19, except for the vicinity of the lower end part 22 of the needle insertion cylinder 7, The bridge part 13 can be kept away from the body surface of the patient or the like. Thereby, useless interference with the bridge | crosslinking part 13 and body surfaces, such as a patient with an unevenness | corrugation, can be avoided. In addition, as illustrated in FIG. 2, bumps 20 arranged in the circumferential direction may be formed on the bottom surface of the substrate portion 11 of the base 1. By having the bumps 20, the substrate unit 11 becomes more difficult to slide with respect to the body surface of a patient or the like.

  On the outer side surface of the lower end portion of the rising portion 17, a projection 23 is formed in a portion that divides the circumference into four equal parts to rotatably support the end portions of the pair of support members 3 and 5 (see FIG. 3) . The protrusion 23 has a small-diameter columnar body 25 on the root side and a widened head 27 on the tip side. The columnar body 25 functions as a rotation shaft of the support members 3 and 5, and the head portion 27 functions as a retaining member for the support members 3 and 5. The base 1 can be formed, for example, by integral molding of resin.

  The pair of support members 3 and 5 have substantially the same shape, although the sizes thereof are different so that one is disposed outside the other. For this reason, the support member 3 arrange | positioned inside is demonstrated on behalf of both. The support member 3 is a plate-like body that curves in a semicircular shape toward the lower main surface. Holes 29 are formed at both ends of the support member 3 (see FIG. 4). The support member 3 is pivotally locked to the pair of protrusions 23 when the columnar bodies 25 of the pair of protrusions 23 provided at portions facing the opening 15 are received in the holes 29. The In order to enable locking, the head 27 of the projection 23 is set to a width that cannot pass through the hole 29. In order to enable the cylindrical body 25 to be inserted into and removed from the hole 29, cuts 31 leading to the hole 29 are formed at both ends of the support member 3. The cylindrical body 25 can be inserted into and removed from the hole 29 through the notch 31. The width of the cut 31 is set smaller than the diameter of the cylindrical body 25. Thereby, the support member 3 locked to the protrusion 23 is stably locked to the protrusion 23 without detaching from the protrusion 23 without applying a finger force of a certain level or more.

  The pair of protrusions 23 that function as the rotation shaft of the support member 3 are disposed on the same virtual rotation shaft 35 (see FIG. 2). Accordingly, the support member 3 rotates around the virtual rotation shaft 35. Similarly, the pair of protrusions 23 that function as the rotation shaft of the support member 5 are disposed on the same virtual rotation shaft 37 (see FIG. 1). Accordingly, the support member 5 rotates around the virtual rotation shaft 37. The four protrusions 23 are arranged so that the virtual rotation shaft 35 and the virtual rotation shaft 37 intersect each other. Further, the holes 29 are formed at both ends of the semicircular support members 3 and 5 so that the virtual rotation shafts 35 and 37 coincide with the diameter axes of the pair of semicircular support members 3 and 5. Is done. Therefore, the pair of support members 3 and 5 can rotate independently without interfering with each other while the one support member 5 is positioned outside the other support member 3. In the illustrated example, the pair of support members 3 and 5 are arranged so as to contact each other or to substantially contact each other with a slight gap therebetween. This state of contact or substantially contact is unchanged regardless of the rotational position of the pair of support members 3 and 5. Further, in the illustrated example, the four protrusions 23 are arranged so that the virtual rotation shaft 35 and the virtual rotation shaft 37 are parallel to the bottom surface of the substrate portion 11 of the base 1, that is, horizontal and orthogonal to each other. Is done.

  The support members 3 and 5 are formed with long holes 33 and 34 penetrating both main surfaces over a certain range from the central portion toward both ends along the longitudinal direction thereof. The head 39 of the needle insertion cylinder 7 is inserted into the long holes 33 and 34. Therefore, the head 39 is always located at the intersection of the long holes 33 and 34. The head 39 can slide in the longitudinal direction of the support members 3, 5, that is, in the circumferential direction along the long holes 33, 34 with or without play. A protruding portion 41 that projects in the radial direction is formed at the lower end portion of the head portion 39 of the needle insertion tube 7. The overhanging portion 41 is located inward of the inner support member 3 in the radial direction, that is, below. A male screw is formed on the head 39, and a screw body 9 having a female screw formed inside is screwed onto the male screw. The screw body 9 is located on the outer side in the radial direction of the outer support member 5, that is, on the upper side. As described above, the support members 3 and 5 are sandwiched between the protruding portion 41 of the needle insertion tube 7 and the screw body 9, thereby supporting the needle insertion tube 7. The pair of support members 3, 5, the needle insertion cylinder 7, and the screw body 9 correspond to an example of “puncture needle support portion” in one embodiment of the present invention. The support members 3 and 5 can be individually formed by integral molding of resin. The needle insertion cylinder 7 and the screw body 9 can also be formed of resin.

  The screw body 9 is formed as a knob and can be tightened or loosened by a finger. In the illustrated example, the screw body 9 has a nut shape. By loosening the screw body 9, the needle insertion cylinder 7 can slide along the long holes 33 and 34 of the support members 3 and 5. Further, the support members 3 and 5 can freely rotate around the virtual rotation shafts 35 and 37 following the movement of the needle insertion cylinder 7. For this reason, the needle insertion cylinder 7 can be freely tilted in all directions. FIG. 5 is a perspective view of the puncture needle holder 101 in a state where the needle insertion cylinder 7 is tilted. A doctor or the like who uses the puncture needle holder 101 can freely tilt the needle insertion cylinder 7 by grasping the screw body 9 with a finger.

  Regardless of the rotation position of the support members 3 and 5, the intersection of the support members 3 and 5 is located on the phantom spherical surface. For this reason, the head 39 of the needle insertion cylinder 7 moves along this virtual spherical surface. The center of this virtual spherical surface coincides with the intersection of the virtual rotation axes 35 and 37. The opening 21 at the center of the bottom of the recessed portion 19 of the pedestal 1 is formed so as to be positioned at the center of the phantom spherical surface. As a result, the needle insertion cylinder 7 tilts in all directions around the spherical lower end portion 22 of the needle insertion cylinder 7 located at the center of the virtual spherical surface. For example, the concave portion 19 is not provided, and as a result, even if the lower end portion 22 of the needle insertion tube 7 is not supported by the concave portion 19 and floats in the air, the head 39 of the needle insertion tube 7 follows the virtual spherical surface. Therefore, the lower end portion 22 of the needle insertion cylinder 7 is always located at the center of the phantom spherical surface regardless of the tilting position of the needle insertion cylinder 7. However, since the lower end portion 22 is supported by the recessed portion 19, the position of the lower end portion 22 is further stabilized, and accordingly, the posture of the needle insertion cylinder 7 is further stabilized.

  A doctor or the like can fasten the needle insertion tube 7 to the support members 3 and 5 by grasping the screw body 9 with fingers and adjusting the tilting position of the needle insertion tube 7 and then tightening the screw body 9 with the same finger. it can. As a result, the needle insertion cylinder 7 can no longer slide with respect to any of the support members 3 and 5 and is fixed. That is, the tilting position of the needle insertion cylinder 7 is fixed. A doctor or the like can change the posture of the puncture needle by the operation of a finger by performing the above operation in a state where a puncture needle such as a biopsy needle is inserted and held in the needle insertion tube 7. The finger can fix the posture of the puncture needle to a desired posture. A doctor or the like inserts the puncture needle into the body after fixing the posture of the puncture needle to a desired posture.

  FIG. 6 is a plan view of a part of the puncture needle holder 101. As shown in the drawing, the rotation restraining that projects outward in the radial direction of the needle insertion tube 7 in the portion of the head 39 of the needle insertion tube 7 that slides along the long holes 33 and 34 of the support members 3 and 5. A member 10 is formed. In the illustrated example, the rotation stopping member 10 is formed so that the outer peripheral shape is rectangular when viewed from the direction of the tube shaft 40 (see FIG. 2) of the needle insertion tube 7. A longitudinal sectional structure of the rotation stopping member 10 is shown in FIG. The rotation stop member 10 can slide in the longitudinal direction of the support members 3, 5, that is, in the circumferential direction along the long holes 33, 34 with or without play. Since the rotation stopping member 10 has a rectangular outer peripheral shape when viewed from the direction of the cylinder shaft 40, the rotation around the cylinder shaft 40 is stopped by the support members 3 and 5. For this reason, when the screw body 9 is tightened or loosened, it is possible to effectively prevent the needle insertion tube 7 from rotating around the screw body 9 (together). The operation of the body 9 becomes easier. The rotation stopping member 10 may be formed only at a portion that slides relative to one of the support members 3 and 5.

  Returning to FIGS. 1 and 2, the needle insertion cylinder 7 is formed in a hollow shape and has a cylindrical through-hole 51 extending along the cylinder axis 40. By attaching a cylindrical needle holder 53 as an accessory to the through hole 51, the puncture needle holder 101 is used. The needle holder 53 is formed with a hollow portion 52 through which a puncture needle to be held is inserted. The needle holder 53 can be attached to and detached from the needle insertion cylinder 7 and is taken in and out from the top of the needle insertion cylinder 7 in the illustrated example. The needle holder 53 is formed with an overhanging portion 56 projecting radially outward in the vicinity of the upper portion so as not to fall off from the lower end of the needle insertion tube 7 when the needle holder 53 is attached to the needle insertion tube 7. When the overhanging portion 56 comes into contact with the upper end surface of the head 39 of the needle insertion cylinder 7, the needle holder 53 is mounted at a predetermined position of the needle insertion cylinder 7. The needle holder 53 can be formed of resin.

  FIG. 7 is a longitudinal sectional view of the needle insertion cylinder 7 of the puncture needle holder 101. In FIG. 7, the puncture needle held by the needle insertion cylinder 7 is also shown at the same time. The puncture needle 43 is a biopsy needle as an example. The puncture needle 43, which is a biopsy needle, has a manual operation unit 45 attached to its head. In a biopsy needle, a needle body (referred to as “stylet”) has a holding portion for holding a collected tissue at the tip (not shown). The needle body is housed in a cylindrical sheath (referred to as a “cannula”). A finger is placed on the finger hook 47 of the manual operation unit 45 and the plunger 49 is pushed with a thumb, whereby the needle body is moved to the sheath. It can be exposed from the tip. By further pushing the plunger 49, the needle body can be instantaneously pulled back into the sheath by the restoring force of the built-in spring. In this way, it is possible to collect a part of the tissue inside the body in a state of being housed in the sheath.

  In FIG. 7, a needle holder 53 mounted in the through hole 51 of the needle insertion cylinder 7 is also shown at the same time. Unlike the needle holder 53 illustrated in FIG. 2, the needle holder 53 illustrated in FIG. 7 is inserted and removed from the lower end portion of the needle insertion cylinder 7. The diameter or width of the hollow portion 52 of the cylindrical needle holder 53 is selected so that the target puncture needle 43 can slide with little play. The needle holder 53 has a film body 54 covering the lower end of the hollow portion 52 at the bottom. The film body 54 abuts on the tip of the puncture needle 43 inserted into the hollow portion 52 and functions to stop the puncture needle 43. When the puncture needle 43 inserted into the hollow portion 52 is temporarily stopped by the film body 54, the doctor or the like keeps the posture of the puncture needle 43 with the needle tip of the puncture needle 43 floating from the body surface of the patient or the like. Can be adjusted. The film body 54 is set to a material and thickness that can be easily pierced by pushing the puncture needle 43 with the force of a finger applied to the finger hook 47. For this reason, by pressing the puncture needle 43 after the posture of the puncture needle 43 is determined, the needle of the puncture needle 43 is penetrated to the target site inside the body of the patient or the like by breaking through the film body 54 while maintaining the predetermined posture. The destination can be reached. As an example, the film body 54 is a silicone film.

  A protruding portion 55 that projects in the radial direction is further formed on the bottom of the needle holder 53. The needle holder 53 is attached to the needle insertion cylinder 7 by being inserted into the through hole 51 of the needle insertion cylinder 7 from the bottom until the protruding portion 55 contacts the bottom of the needle insertion cylinder 7. When the mounting is completed, the head 57 of the needle holder 53 is exposed upward from the head 39 of the needle insertion cylinder 7. An annular recess 59 is formed in the inner wall of the needle insertion cylinder 7 along the inner circumferential direction, and a projection 61 is formed on the outer wall of the needle holder 53. When the mounting of the needle holder 53 is completed, the protrusion 61 engages with the recess 59. Thereby, the wearing state is maintained. By pushing the head 57 of the needle holder 53 with a finger, the engagement state between the protrusion 61 and the depression 59 can be released, and the needle holder 53 can be detached from the needle insertion cylinder 7. Thus, the needle holder 53 is detachable from the needle insertion cylinder 7.

  By using the needle holder 53, only the needle holder 53 is made disposable (disposable) like the puncture needle 43, and the remaining portion of the puncture needle holder 101 including the needle insertion tube 7 is disinfected and reused. It becomes possible. Further, by preparing the needle holder 53 having various inner diameters corresponding to the puncture needles 43 having various diameters, the remaining portions of the puncture needle holder 101 are not changed, and the puncture needles 43 having various diameters are not changed. It becomes possible to cope with.

  8 to 11 are perspective views of the puncture needle holder having the base 1 having various shapes. As illustrated in FIGS. 8 to 11, the rising portion 17 erected on the substrate portion 11 of the base 1 may be some columnar bodies. The opening 21 for receiving the spherical lower end 22 of the needle insertion cylinder 7 is formed at the center of the bottom of the recessed portion 19 in the same manner as the puncture needle holder 101 illustrated in FIG. The pattern of the recessed portion 19 is a radial shape, particularly a “cross” shape, in the puncture needle holder 102 illustrated in FIG. 8, and a combination of concentric circles and a radial shape in the puncture needle holder 103 illustrated in FIG. The puncture needle holder 104 illustrated in FIG. 10 has a shape in which circular windows are arranged in the circumferential direction, and the puncture needle holder 105 illustrated in FIG. 11 has a lattice shape. There are various forms other than these examples. The shape of the recessed portion 19 can be selected in consideration of maintaining mechanical strength and ensuring visibility so that the body surface of a patient or the like can be visually recognized through the gap. When the recessed portion 19 is made of a transparent material, the visibility is further improved. When the concave portion 19 is made of a transparent material, visibility can be ensured even if the concave portion 19 is formed in a bowl shape without a gap.

  FIG. 12 is a plan view illustrating another planar outer peripheral contour shape of the pedestal 1 of the puncture needle holder 101. In the illustrated example, the planar outer peripheral contour of the base 1 has a random shape with no regularity. Neither a rotationally symmetric axis nor a line-symmetrical axis can be set in the planar outer peripheral contour shape. Since the planar outer contour shape of the pedestal 1 is such an asymmetrical irregular shape, even if there are irregular irregularities on the body surface of a patient or the like, the position where the pedestal 1 becomes familiar with the irregularities can be obtained by rotating the pedestal 1 Can be found. That is, the pedestal 1 is more easily adapted to the unevenness of the body of the patient or the like as compared to the planar outer peripheral contour illustrated in FIG.

(Other embodiments)
(1) Although an example in which the puncture needle 43 is a biopsy needle has been described above, the puncture needle holder 101 can be applied to a puncture needle 43 other than the biopsy needle.
(2) The board | substrate part 11 mounted on body surfaces, such as a patient, becomes easy to become familiar with the body surface with an unevenness | corrugation by being comprised with materials rich in elasticity, such as a urethane resin, for example.

  1 base, 3, 5 pair of support members, 7 needle insertion tube, 9 screw body, 10 rotation stopping member, 11 substrate portion, 13 bridging portion, 15 opening portion, 17 rising portion, 19 recessed portion, 20 bump, 21 opening Part, 22 lower end part, 23 projection, 25 cylindrical body, 27 head part, 29 hole, 31 notch, 33, 34 long hole, 35, 37 virtual rotation axis, 39 head part, 40 cylinder axis, 41 overhang part 43 Puncture needle, 45 Hand operation part, 47 Finger hook, 49 Plunger, 51 Through hole, 52 Hollow part, 53 Needle holder, 54 Film body, 55, 56 Overhang part, 57 Head, 59 Recess, 61 Protrusion, 101 Puncture needle holder.

Claims (6)

A pedestal for placing on the body surface of a patient or subject, and a pedestal having an opening through which a puncture needle can be inserted;
A needle insertion cylinder for holding the puncture needle to be inserted;
Both are curved so as to be semicircular, and both ends of each are rotatably supported by the pedestal so that they cross each other, and both the needle insertion cylinders can be slid in the respective circumferential directions. A pair of support members to support at the intersection of
The needle insertion tube can be freely slid relative to the pair of support members by screwing and loosening the needle insertion tube outside the intersecting portion in the radial direction, and the pair of support members and the needle insertion can be tightened by tightening. A screw body for fastening the tube ,
The needle insertion cylinder extends to the intersection of the rotation shafts of the pair of support members, and has a spherical lower end portion at the intersection of the rotation shafts, and the pedestal has the opening A puncture needle holder that supports the needle insertion tube so that it can be tilted in all directions at the intersection of the rotation axes by receiving the spherical lower end portion in the portion . A pedestal for placing on the body surface of a patient or subject, and a pedestal having an opening through which a puncture needle can be inserted;
A needle insertion cylinder for holding the puncture needle to be inserted;
Both are curved so as to be semicircular, and both ends of each are rotatably supported by the pedestal so that they cross each other, and both the needle insertion cylinders can be slid in the respective circumferential directions. A pair of support members to support at the intersection of
The needle insertion tube can be freely slid relative to the pair of support members by screwing and loosening the needle insertion tube outside the intersecting portion in the radial direction, and the pair of support members and the needle insertion can be tightened by tightening. A screw body for fastening the tube,
A cylindrical needle holder that is detachably attached to the hollow portion of the needle insertion cylinder and that slidably holds the inserted puncture needle;
The needle holding member is a membrane covering the bottom of the hollow portion has a membrane body which is pierced by pressing the inserted through the puncture needle, puncture puncture needle holder. A pedestal for placing on the body surface of a patient or subject, and a pedestal having an opening through which a puncture needle can be inserted;
A needle insertion cylinder for holding the puncture needle to be inserted;
Both are curved so as to be semicircular, and both ends of each are rotatably supported by the pedestal so that they cross each other, and both the needle insertion cylinders can be slid in the respective circumferential directions. A pair of support members to support at the intersection of
The needle insertion tube can be freely slid relative to the pair of support members by screwing and loosening the needle insertion tube outside the intersecting portion in the radial direction, and the pair of support members and the needle insertion can be tightened by tightening. A screw body for fastening the tube,
The needle insertion tube has a rotation restraining member at a portion sliding with respect to at least one of the pair of support members, and the rotation restraining member slides with respect to the at least one support member. is possible, at the same time, by the at least one of the support member, a member that rotates around the cylindrical shaft is restrained, thereby restraining rotation about the cylindrical axis of the needle insertion cylinder, puncture puncture needle holder. A pedestal for placing on the body surface of a patient or subject, and a pedestal having an opening through which a puncture needle can be inserted;
A needle insertion cylinder for holding the puncture needle to be inserted;
Both are curved so as to be semicircular, and both ends of each are rotatably supported by the pedestal so that they cross each other, and both the needle insertion cylinders can be slid in the respective circumferential directions. A pair of support members to support at the intersection of
The needle insertion tube can be freely slid relative to the pair of support members by screwing and loosening the needle insertion tube outside the intersecting portion in the radial direction, and the pair of support members and the needle insertion can be tightened by tightening. A screw body for fastening the tube,
Planar outer peripheral contour shape of the pedestal is asymmetric variant not resides neither rotational symmetry axis and the line symmetry axis, puncture puncture needle holder. The needle insertion cylinder extends to the intersection of the rotation shafts of the pair of support members, and has a spherical lower end portion at the intersection of the rotation shafts, and the pedestal has the opening 5. The support according to claim 2 , wherein the needle insertion tube is supported so as to be able to tilt in all directions at an intersection of the rotation shafts by receiving the spherical lower end portion in the portion. Puncture needle holder. A pedestal for placement on the body surface of the patient or subject;
A puncture needle support portion provided on the base and supporting the puncture needle,
The puncture needle holder, wherein the planar outer peripheral contour shape of the pedestal is an asymmetrical variant having neither a rotational symmetry axis nor a line symmetry axis.