JP6467099B1 - Artificial bone storage container - Google Patents

Abstract

To provide an artificial bone storage container that protects an artificial bone and is unlikely to be an obstacle to an operation using a guide wire. A storage container includes a main body that can store an artificial bone with a guide wire inserted therein, and a braking unit that prevents sliding of the main body along the guide wire due to its own weight. 20. [Selection] Figure 1

Description

  The present invention relates to an artificial bone storage container. More specifically, the present invention relates to a storage container suitable for storing a cylindrical artificial bone into which a guide wire can be inserted.

  As a recent trend, there are many operations aiming at minimally invasiveness by reducing the skin incision part (cutting part) of the treatment part. One type of surgery is performed using a guide wire. By using a guide wire, the target site can be treated while keeping the skin incision to a minimum.

  Conventionally, a cannula type artificial bone provided with a through hole for inserting a guide wire is known (Patent Document 1). After incising the skin, one end of the guide wire is inserted to the target site under fluoroscopy, and the other end of the guide wire is inserted into the through hole of the cannulated artificial bone. The artificial bone can be introduced to the target site for treatment by sliding the artificial bone along the axial direction of the guide wire.

  In addition, a container for artificial bone which is not a cannulated artificial bone but is solid such as a columnar shape has been proposed (Patent Document 2). The storage container described in Patent Literature 2 includes a main body (storage section) that stores artificial bones, and a hinge section (holding section) that holds a state in which artificial bones are stored in the main body. This storage container is configured such that the artificial bone is detached from the main body by the expansion of the main body by the hinge.

International Publication WO2006 / 020463 Pamphlet Japanese Patent Application Laid-Open No. 2014-200525

  By the way, since the cannula type artificial bone is easily broken and is a sterilized product, it is required to be stored in a container until it is introduced into a living body and protected from external impacts and germs. For this reason, it is desirable that the guide wire can be inserted into the through-hole of the artificial bone while the artificial bone is stored and protected in the storage container. In this regard, for example, the storage container described in Patent Document 2 has openings at the front and rear ends of the main body, so that the guide wire is inserted into the through-hole while the cannula type artificial bone is stored in the storage container. It is also possible to insert it.

  However, when a guide wire is inserted through the artificial bone in the storage container, the friction coefficient of the contact portion between the storage container and the guide wire is small, so that the storage container slides on the axis of the guide wire by its own weight, and the operator's There is a possibility that the position of the storage container may be shifted unexpectedly. For example, it is assumed that the artificial bone may enter the living body along the guide wire before the preparation is completed, or a container containing the artificial bone may enter the living body, which may lead to a serious medical error. is there. For this reason, even after the surgeon inserts the guide wire into the artificial bone in the storage container, the surgeon must prevent the storage container from moving freely on the guide wire axis while holding the storage container by hand. First, there was a problem that the operation was hindered.

  Therefore, an object of the present invention is to provide an artificial bone storage container that protects a cannulated artificial bone and is unlikely to be an obstacle to an operation using a guide wire.

  The inventor of the present invention, as a result of earnestly examining the means for solving the problems of the prior art, provided a braking mechanism for preventing sliding along the axis of the guide wire in the artificial bone storage container. It was found that the artificial bone inserted through the wire can be properly protected, and at the same time, it can avoid becoming an obstacle to surgery. The inventor has conceived that the problems of the prior art can be solved based on the above knowledge, and has completed the present invention. More specifically, the present invention has the following configuration.

  The first aspect of the present invention relates to an artificial bone storage container. Specifically, the present invention is a cannula type artificial bone storage container having a through hole for inserting a guide wire. The storage container according to the present invention includes a main body portion and a braking portion. The main body has a space in which the artificial bone with the guide wire inserted therein can be stored. The braking portion has means for stopping sliding of the main body portion along the guide wire due to its own weight. Thus, by protecting the artificial bone inserted through the guide wire by the storage container, the artificial bone can be protected from external impacts and germs until just before being introduced into the living body. Furthermore, by providing the storage container with a braking portion, it is possible to avoid a situation in which the storage container and the artificial bone slide on the axis of the guide wire against the operator's will due to their own weight. This eliminates the need for the surgeon to hold the storage container by hand, so that both hands can be used freely, leading to improved work efficiency.

  In the storage container according to the present invention, it is preferable that the braking portion includes a blade portion that is in pressure contact with the surface of the guide wire. Thus, by providing a blade portion for sandwiching the guide wire, the friction coefficient between the blade portion and the surface of the guide wire is increased, so that sliding of the main body portion can be suppressed with a simple configuration. For example, it is also beneficial to configure the entire storage container or at least the blades with a flexible material such as plastic or rubber.

  In the storage container according to the present invention, the braking portion is configured to be able to transition between a state (first state) in which sliding of the main body portion is inhibited and a state in which sliding of the main body portion is allowed (second state). It is preferable. As a result, the operator can freely change the position of the storage container on the guide wire in accordance with the state of the operation.

  In the storage container according to the present invention, it is preferable that the main body portion is composed of a plurality of divided bodies, and an artificial bone containing space is formed by engaging each divided body. By deploying each divided body, the artificial bone is released from the storage space of the main body, and only the artificial bone slides on the axis of the guide wire. For this reason, the operator can release the engaged state of each divided body at an arbitrary timing and introduce the artificial bone into the living body. In addition, it is preferable that the braking portion inhibits the sliding of the main body when the divided bodies are engaged, and allows the sliding of the main body when the divided bodies are deployed. Thereby, the surgeon can perform the operation of removing the storage container from the artificial bone and the operation of sliding the artificial bone along the guide wire in one operation.

  In the storage container according to the present invention, it is preferable that the braking portion includes a blade portion that is pressed against the surface of the guide wire, and the blade portion is provided in each of the divided bodies. As a result, each blade portion comes into pressure contact with the surface of the guide wire in a state in which each divided body is engaged. Further, since the pressure contact state of each blade portion is released by developing each divided body, the artificial bone in the main body portion can be slid along the guide wire with a simple operation.

  The 2nd side surface of this invention is related with the storage container containing an artificial bone. That is, the second side is a product in which an artificial bone and a storage container are set. The storage container relates to the first side surface described above. The artificial bone has a through-hole through which a guide wire can be inserted. By selling the artificial bone stored in the storage container, the operator can omit the operation of storing the artificial bone in the storage container. In addition, the artificial bone can be appropriately protected by the storage container from the time of sales distribution until just before introduction into the living body. Thus, the added value of the cannulated artificial bone can be increased by the storage container.

  According to the storage container of the present invention, it is possible to improve the efficiency of the operation using the guide wire while protecting the cannulated artificial bone.

FIG. 1 is a perspective view showing a state where a guide wire is inserted into an artificial bone and a storage container, and shows a state where the storage container is opened. FIG. 2 is a perspective view showing a state in which the guide wire is inserted into the artificial bone and the storage container, and shows a state in which the storage container is closed. FIG. 3 is a perspective view showing the inside of the storage container in an open state. FIG. 4 is a perspective view showing the outside of the storage container in an open state. FIG. 5A is a cross-sectional view showing a state in which the artificial bone is stored in the storage container, and FIG. 5B is a cross-sectional view showing a state in which the guide wire is inserted into the storage container in which the artificial bone is stored. is there. 5A and 5B mainly illustrate changes in the shape of the braking portion (blade portion).

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. This invention is not limited to the form demonstrated below, The thing suitably changed in the range obvious to those skilled in the art from the following forms is also included.

  1 and 2 show a medical system including a storage container 100, an artificial bone 200, and a guide wire 300, and FIGS. 3 and 4 show only the storage container 100. FIG. In particular, FIG. 1 shows a state in which the storage container 100 is expanded, and FIG. 2 shows a state in which the storage container 100 is closed and the artificial bone 200 is stored therein.

  As shown in FIG. 1, a through hole is formed in the artificial bone 200, and a guide wire 300 is inserted into the through hole. The artificial bone 200 is not particularly limited as long as it has a through-hole through which the guide wire 300 can be inserted, but a cylindrical shape as shown in FIG. 1 is preferable. However, the artificial bone may have another cylindrical shape (triangular cylindrical shape, quadrangular cylindrical shape, polygonal cylindrical shape), or may have a through hole formed in a predetermined three-dimensional shape. In addition, the artificial bone 200 may be formed with a plurality of through-holes instead of only one.

  The artificial bone 200 can be formed of a known biocompatible material, more specifically, a material exhibiting suitable compatibility with a living bone. If the material of the artificial bone 200 is ceramics, for example, hydroxyapatite of a calcium phosphate compound, β-tricalcium phosphate (β-TCP), or a mixture of both can be employed. When the artificial bone 200 is made of resin, it is preferable to employ a biocompatible material such as PEEK (polyether ether ketone). If it is a metal, titanium, a titanium alloy, or a porous titanium member is preferable.

  A known guide wire 300 may be used. For example, the guide wire 300 has a double tube structure in which an inner shaft is inserted into a tubular outer shaft. The inner shaft and the outer shaft are formed of a known material having a characteristic capable of being bent in vivo. For example, the material constituting the guide wire 300 includes polyamide, vinyl chloride, polyurethane, polyimide, polyethylene, polyester elastomer, polypropylene, polytetrafluoroethylene, polyetheretherketone, polyvinylidene fluoride, and the like, stainless steel, A metal material such as a nickel-titanium alloy or a combination thereof may be used.

  The storage container 100 is a container for storing the artificial bone 200 and has a configuration in which the guide wire 300 can be inserted into the through hole of the artificial bone 200 while the artificial bone 200 is stored inside. Yes. That is, the storage container 100 has an opening for inserting the guide wire 300 at substantially the same position as the through hole of the artificial bone 200. Therefore, after the artificial bone 200 is stored in the storage container 100, the guide wire 300 can be inserted into the through-hole without removing the artificial bone 200 from the storage container 100. For example, when selling a product in which the storage container 100 and the artificial bone 200 are sold as a set, the artificial bone 200 can be stored in the storage container 100 from the time of distribution until just before being introduced into the living body.

  The material of the storage container 100 is not particularly limited, but may be made of plastic such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyvinyl acetate, and polyurethane. However, the storage container 100 is not limited to plastic, and may be made of metal, glass, or carbon, for example.

  As shown in FIGS. 1 to 4, the storage container 100 mainly includes a main body 10 having a storage space for the artificial bone 200, and the main body 10 slides along the axis of the guide wire 300. And a braking portion 20 for stopping the vehicle. When the storage container 100 is not provided with the braking unit 20, when the guide wire 300 is inserted through the artificial bone 200 stored in the storage container 100, the storage container 100 and the artificial bone 200 are attached to the guide wire 300 by their own weight. However, by providing the storage container 100 with the braking unit 20, the artificial bone 200 is fixed at an arbitrary position on the guide wire 300 by the storage container 100, and the guide wire 300 is inadvertently fixed. The situation where it moves on the axis of can be prevented.

  What is necessary is just to design the shape of the main-body part 10 of the storage container 100 suitably according to the shape of the artificial bone 200 used as storage object. For example, in the embodiment shown in FIG. 1 to FIG. 4, it is assumed that a cylindrical artificial bone 200 is accommodated. Therefore, the storage space of the main body 100 is also designed in a columnar shape that can accommodate the artificial bone 200. Has been.

  Specifically, in the present embodiment, the main body portion 10 is divided into a first divided portion 11 and a second divided portion 12, and these divided portions 11 and 12 are connected to each other by a hinge portion 13 so as to be freely opened and closed. ing. A storage space for the artificial bone 200 is formed by closing the first divided portion 11 and the second divided portion 12 via the hinge portion 13. The space is opened and the artificial bone 200 can be taken out. Further, in each of the divided portions 11 and 12, notches 11a, 11b, 12a, and 12b are formed at both front and rear end portions on the axis of the guide wire 300. Each notch 11a, 11b, 12a, 12b is semicircular, and when the notches 11a, 11b of the first divided part 11 and the notches 12a, 12b of the second divided part 12 are combined, a circular shape through which the guide wire 300 can be inserted. It becomes the opening of. Accordingly, the guide wire 300 can be inserted so as to penetrate the storage container 100 and the artificial bone 200 while the artificial bone 200 is stored in the main body 10 of the storage container 100.

  Further, the first divided portion 11 and the second divided portion 12 constituting the main body portion 10 are provided with locking pieces 14 and 15, respectively. As shown in FIGS. 1 and 2, the front end portion of the first locking piece 14 projecting from the first split portion 11 and the front end portion of the second locking piece 15 projecting from the second split portion 12 are shown. Then, these locking pieces 14 and 15 are engaged by elastically deforming their tip portions and exchanging the positions of both tip portions. Thereby, the fitting state of the 1st division part 11 and the 2nd division part 12 is maintained. On the contrary, when the fitting state between the first divided portion 11 and the second divided portion 12 is released, the distal end portion of the first locking piece 14 and the distal end portion of the second locking piece 15 are again elastically deformed. Then, the positions of both tip portions may be reversed in the opposite direction. If it does in this way, opening and closing operation of the main-body part 10 of the storage container 100 can be performed with one hand.

  In the present embodiment, the main body 10 of the storage container 100 is divided into two parts, the first divided part 11 and the second divided part 12, but it may be divided into three parts or four or more parts. Even when the storage container 100 is divided into three or more parts, there is no problem as long as the storage space for the artificial bone 200 is formed by fitting a plurality of divided bodies.

  The braking portion 20 of the storage container 100 has a function of preventing the main body portion 10 from sliding and holding the main body portion 10 at an arbitrary position on the guide wire 300. In the embodiment shown in FIG. 1 to FIG. 5, the braking unit 20 is constituted by a pair of blade portions 21 and 22 projecting from the main body unit 10. Each blade portion 21, 22 is pressed against the outer surface of the guide wire 300 and sandwiches the guide wire. As a result, the friction coefficient between the blade portions 21 and 22 and the guide wire 300 increases, and the sliding of the main body portion 10 is restrained by the action of the blade portions 21 and 22.

  In this embodiment, the 1st blade | wing part 21 and the 2nd blade | wing part 22 are provided so that it may protrude from the end of the 1st division | segmentation part 11 and the 2nd division | segmentation part 12 in the axial direction of the guide wire 300, respectively. Each of the blade portions 21 and 22 is configured such that when the first divided portion 11 and the second divided portion 12 are closed via the hinge portion 13, their tip portions contact the surface of the guide wire 300. Yes. In addition, semicircular cutouts 21 a and 22 a are formed at the tip portions of the blade portions 21 and 22 so as to conform to the peripheral shape of the guide wire 300. Therefore, when the first divided portion 11 and the second divided portion 12 are closed, the guide wire 300 is fitted into the notch 21a of the first blade portion 21 and the notch 22a of the second blade portion 22, and the guide wire 300 is Each blade part 21 and 22 will be contacted. In particular, in a state where the first divided portion 11 and the second divided portion 12 are closed, the first blade portion 21 and the second blade portion 22 press the guide wire 300 from opposite directions. That is, the guide wire 300 is sandwiched between the first blade portion 21 and the second blade portion 22. In addition, although illustration is abbreviate | omitted, it is also possible to provide a blade | wing part in the both ends of the 1st division part 11 and the 2nd division part 12. FIG.

  Specifically, FIG. 5 schematically shows a cross-sectional view of the storage container 100, the artificial bone 200, and the guide wire 300. As shown in FIG. 5, the diameter of the guide wire 300 is φ, and the gap distance between the blade portions 21 and 22 at the contact point of the guide wire 300 (specifically, the distance between the deepest points of the notches 21a and 22a). If D is D, the gap distance D between the blade portions 21 and 22 is designed to be smaller than the diameter φ of the guide wire 300 (D <φ). For example, the diameter φ of the guide wire 300 is generally 2 to 5 mm. The gap distance D between the blade portions 21 and 22 may be set to a value of 20 to 90% or 30 to 80% with respect to the diameter φ. By doing so, as shown in FIG. 5B, when the guide wire 300 is inserted into the storage container 100, the blades 21 and 22 are elastically deformed, and the blades 21 and 22 are restored by their restoring force. Is in pressure contact with the surface of the guide wire 300 (in the illustrated example, the guide wire 300 is inserted from the left side to the right side in the drawing). As a result, the friction coefficient between the tips of the blades 21 and 22 and the surface of the guide wire 300 increases, and the storage container 100 and the artificial bone 200 can slide on the axis of the guide wire 300 by their own weight. Be blocked.

  Next, the operation sequence using the medical system including the storage container 100, the artificial bone 200, and the guide wire 300 will be briefly described. As described above, since the hollow artificial bone 200 is easily broken, the hollow artificial bone 200 is stored in the storage container 100 until it is introduced into the living body, and is protected from damage caused by unnecessary external impact. . First, the patient's skin is incised, and one end of the guide wire 300 is introduced into the body from the incision site and placed. Next, the other end of the guide wire 300 is aligned with the position of the through hole of the artificial bone 200, and the end of the guide wire 300 is inserted into the through hole. At this time, since the artificial bone 200 is stored in the storage container 100, the surgeon can perform a supplementary operation without directly touching the artificial bone 200 with a finger. Further, since the opening is provided in the storage container 100 at a position corresponding to the through hole of the artificial bone 200, the guide wire 300 can be penetrated while the artificial bone 200 is stored in the storage container 100. Further, since the storage container 100 in which the artificial bone 200 is stored does not move on the guide wire 300 by its own weight, the operator can place the storage container 100 at an arbitrary position on the guide wire 300 as the operation progresses. Can be held. After passing the guide wire 300 through the artificial bone 200, the fixing function of the storage container 100 is released by one-hand operation at a position intended by the operator, and the artificial bone 200 is detached from the storage container 100. Then, only the artificial bone 200 starts to slide along the guide wire 300 and is introduced into the living body from the incision site in a form guided by the guide wire 300. Thus, according to the present medical system, the artificial bone 300 can be safely guided into the living body while protecting it from external impacts and bacteria.

  In the present invention, the braking portion 20 of the storage container 100 is not limited to the blade portions 21 and 22 described above, and various structures may be employed as long as the function of preventing the sliding of the main body portion 10 is achieved. Can do. For example, as the braking unit 20, a string-like member that extends from the container body 10 and can be locked to the guide wire 300, a clip member that protrudes from the container body 10 and sandwiches the guide wire 300, and the container body 10 is guided by the guide wire. It is possible to adopt various forms such as an adhesive member (adhesive tape or the like) for fastening to 30 and a packing member provided in a gap between the container body 10 and the guide wire 30 and formed of a high friction material such as rubber. it can.

  As mentioned above, in this specification, in order to express the content of this invention, embodiment of this invention was described, referring drawings. However, the present invention is not limited to the above-described embodiments, but includes modifications and improvements obvious to those skilled in the art based on the matters described in the present specification.

  The present invention relates to an artificial bone storage container and the like. Therefore, the present invention can be suitably used in the medical industry.

DESCRIPTION OF SYMBOLS 10 ... Main-body part 11 ... 1st division body 11a, 11b ... Notch 12 ... 2nd division body 12a, 12b ... Notch 13 ... Hinge part 14 ... 1st locking piece 15 ... 2nd locking piece 20 ... Braking part 21 ... 1st blade | wing part 21a ... Notch 22 ... 2nd blade | wing part 22a ... Notch 100 ... Storage container 200 ... Artificial bone 300 ... Guide wire

Claims (6)

A body that can store the artificial bone with the guide wire inserted;
An artificial bone storage container comprising a braking portion for restraining sliding of the main body portion along the guide wire. The storage container according to claim 1, wherein the braking portion includes a blade portion that is in pressure contact with a surface of the guide wire. The storage container according to claim 1, wherein the braking unit is configured to be capable of transitioning between a state in which sliding of the main body unit is inhibited and a state in which sliding of the main body unit is permitted. The main body portion is composed of a plurality of divided bodies, and an accommodation space for the artificial bone is formed by engaging each divided body,
The braking portion stops sliding of the main body in a state where each divided body is engaged, and allows sliding of the main body in a state where each divided body is deployed. 4. The storage container according to any one of 3. The braking part includes a blade part pressed against the surface of the guide wire,
The storage container according to claim 4, wherein the blade portion is provided in each of the plurality of divided bodies. A storage container according to any one of claims 1 to 5,
An artificial bone-containing storage container including an artificial bone having a through-hole through which a guide wire can be inserted.

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