JP7182267B2 - Set product of artificial bone and storage container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a set product of an artificial bone and a storage container . More specifically, the present invention relates to a set product comprising a cylindrical artificial bone into which a guide wire can be inserted and a storage container suitable for storing it.

A recent trend is to reduce the size of the skin incision (skin incision) in the area to be treated, aiming for minimally invasive surgery. Surgery using a guide wire is performed as one of them. By using a guide wire, the target area can be treated while minimizing the incision.

Further, conventionally, a cannulated artificial bone having 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 of treatment under X-ray fluoroscopy, and the other end of the guide wire is inserted into the through hole of the cannulated artificial bone. By sliding the artificial bone along the axial direction of the guide wire, the artificial bone can be introduced to the target site for treatment.

International publication WO2006/020463 pamphlet

By the way, since the cannulated artificial bone is fragile and is a sterile product, it is required to keep it in a container until just before it is introduced into the living body, and to protect it from external shocks and germs. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a product in which a guide wire can be inserted into a through-hole of an artificial bone while the artificial bone is stored and protected in a container.

The inventor of the present invention, as a result of intensive studies on means for solving the problems faced by the prior art, found that an artificial bone having a through hole through which a guide wire can be inserted and an artificial bone with the guide wire inserted therein can be stored. The present inventors have found that the artificial bone inserted through the guide wire can be appropriately protected by making a set product including a storage container that can be freely opened and closed . Based on the above findings, the inventors of the present invention conceived that the problems of the prior art can be solved, and completed the present invention. Specifically, the present invention has the following configurations.

TECHNICAL FIELD The present invention relates to a set product of an artificial bone and a storage container . Specifically, the present invention comprises a cannula-type artificial bone having a through hole for inserting a guide wire, and an openable and closable storage container capable of storing the artificial bone with the guide wire inserted. In this way, by protecting the artificial bone with the guide wire inserted by the storage container, the artificial bone can be protected from external shocks and germs until just before it is introduced into the living body. In particular, in a preferred embodiment, the set product is sold in a state in which the artificial bone is stored in the storage container, thereby omitting the operator's 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 distribution until just before introduction into the living body. Thus, the storage container can increase the added value of the cannulated bone prosthesis.

In the set product according to the present invention, it is preferable that the storage container is composed of a plurality of divided bodies, and that the storage space for the artificial bone is formed by engaging the divided bodies. By unfolding each divided body, the artificial bone is released from the storage space of the main body so that only the artificial bone slides along the axis of the guide wire. Therefore, the operator can release the engagement state of each divided body at any timing and introduce the artificial bone into the living body.

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

FIG. 1 is a perspective view showing a state in which a guide wire is inserted through an artificial bone and a storage container, showing a state in which the storage container is opened. FIG. 2 is a perspective view showing a state in which a guide wire is passed through an artificial bone and a 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. 5(a) is a cross-sectional view showing a state in which the artificial bone is stored in a storage container, and FIG. 5(b) is a cross-sectional view showing a state in which a guide wire is inserted through the storage container in which the artificial bone is stored. be. 5(a) and 5(b) mainly show changes in the shape of the braking portion (blade portion).

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below, and includes appropriate modifications within the scope obvious to those skilled in the art from the following embodiments.

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, the artificial bone 200 is formed with a through hole through which a guide wire 300 is inserted. 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 it preferably has a cylindrical shape as shown in FIG. However, the artificial bone may have other tubular shapes (triangular tubular shape, square tubular shape, polygonal tubular shape), or may have a through hole formed in a predetermined three-dimensional shape. In addition, the artificial bone 200 may be formed with not only one through-hole but also a plurality of through-holes.

The artificial bone 200 can be made of a known biocompatible material, more specifically, a material that exhibits suitable compatibility with living bones. If the material of the artificial bone 200 is ceramics, for example, hydroxyapatite, which is a calcium phosphate compound, β-tricalcium phosphate (β-TCP), or a mixture of both can be adopted. Also, when the artificial bone 200 is made of resin, it is preferable to adopt a biocompatible material such as PEEK (polyetheretherketone). As for the metal, titanium, titanium alloys, or porous titanium members are preferable.

A well-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 made of a material known to have bendable properties in vivo. For example, materials constituting the guide wire 300 include synthetic resin materials such as polyamide, vinyl chloride, polyurethane, polyimide, polyethylene, polyester elastomer, polypropylene, polytetrafluoroethylene, polyetheretherketone, and polyvinylidene fluoride, 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 structure in which the guide wire 300 can be inserted through the through-hole of the artificial bone 200 while the artificial bone 200 is stored inside. there is 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 storing the artificial bone 200 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 set, the artificial bone 200 can be stored in the storage container 100 from the time of distribution until just before introduction into the living body.

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

As shown in FIGS. 1 to 4, the storage container 100 mainly consists of a main body 10 having a storage space for the artificial bone 200 and a structure that allows the main body 10 to slide along the axis of the guide wire 300 . and a braking portion 20 for stopping the When the storage container 100 is not provided with the braking portion 20, when the guide wire 300 is passed 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 portion 20, the artificial bone 200 can be fixed at an arbitrary position on the guide wire 300 by the storage container 100, and the guide wire 300 can be inadvertently moved. It is possible to prevent a situation in which it moves on the axis of

The shape of the main body 10 of the storage container 100 may be appropriately designed according to the shape of the artificial bone 200 to be stored. For example, in the embodiment shown in FIGS. 1 to 4, since it is assumed that the cylindrical artificial bone 200 is stored, the storage space of the main body 100 is also designed to be cylindrical so that the artificial bone 200 can be stored. It is

Specifically, in this embodiment, the main body 10 is divided into a first divided portion 11 and a second divided portion 12, and these divided portions 11 and 12 are connected by a hinge portion 13 so as to be openable and closable. 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. By unfolding these divided portions 11 and 12, it is possible to store the artificial bone 200. A space is opened and the artificial bone 200 can be taken out. Notches 11 a , 11 b , 12 a , 12 b are formed at both front and rear end portions on the axis of the guide wire 300 in each of the divided portions 11 , 12 . Each of the notches 11a, 11b, 12a, 12b is semicircular, and when the notches 11a, 11b of the first divided portion 11 and the notches 12a, 12b of the second divided portion 12 are combined, the guide wire 300 can be inserted. becomes the opening of As a result, the guide wire 300 can be inserted through 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 .

Locking pieces 14 and 15 are provided on the first divided portion 11 and the second divided portion 12 that constitute the body portion 10, respectively. As shown in FIGS. 1 and 2, the tip of the first locking piece 14 projecting from the first split portion 11 and the tip of the second locking piece 15 projecting from the second split portion 12 are shown. After they are butted against each other, these locking pieces 14 and 15 are engaged by elastically deforming their tip portions and exchanging the positions of both tip portions. As a result, the fitted state of the first divided portion 11 and the second divided portion 12 is maintained. On the contrary, when the first split portion 11 and the second split portion 12 are released from the fitted state, the tip of the first locking piece 14 and the tip of the second locking piece 15 are elastically deformed again. Then, the positions of both ends should be exchanged in the opposite direction. In this way, the main body portion 10 of the storage container 100 can be opened and closed with one hand.

In this embodiment, the body portion 10 of the storage container 100 is divided into the first divided portion 11 and the second divided portion 12, but it may be divided into three or four or more. Even if the storage container 100 is divided into three or more pieces, 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 restraining the sliding of the body portion 10 and holding the body portion 10 at an arbitrary position on the guide wire 300 . In the embodiment shown in FIGS. 1 to 5, the braking portion 20 is composed of a pair of blade portions 21 and 22 projecting from the body portion 10. As shown in FIG. Each vane 21, 22 is pressed against the outer surface of the guide wire 300 to sandwich the guide wire. As a result, the coefficient of friction between the vanes 21 and 22 and the guide wire 300 increases, and the action of the vanes 21 and 22 prevents the main body 10 from sliding.

In this embodiment, the first blade portion 21 and the second blade portion 22 are provided so as to protrude from one end of the first split portion 11 and the second split portion 12 in the axial direction of the guide wire 300 . The blades 21 and 22 are configured such that their distal ends contact the surface of the guide wire 300 when the first divided portion 11 and the second divided portion 12 are closed via the hinge portion 13. there is Semicircular cutouts 21 a and 22 a are formed at the distal ends of the blades 21 and 22 so as to fit 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 It comes into contact with each blade portion 21 , 22 . In particular, when 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 . Although illustration is omitted, it is also possible to provide blade portions at both ends of the first divided portion 11 and the second divided portion 12 .

Specifically, FIG. 5 schematically shows a sectional view of the storage container 100, the artificial bone 200, and the guide wire 300. As shown in FIG. As shown in FIG. 5, the diameter of the guide wire 300 is φ, and the gap distance between the blades 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) is D, the gap distance D between the blades 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 guidewire 300 is generally 2-5 mm. The gap distance D between the blades 21 and 22 may be set to a value of 20 to 90% or 30 to 80% of the diameter φ. By doing so, as shown in FIG. 5(b), when the guide wire 300 is inserted into the storage container 100, the blades 21 and 22 are elastically deformed, and the restoring force of the blades 21 and 22 causes the blades 21 and 22 to deform. is pressed against the surface of the guide wire 300 (in the illustrated example, the guide wire 300 is inserted from left to right in the drawing). As a result, the coefficient of friction between the tips of the blades 21 and 22 and the surface of the guide wire 300 increases, and the container 100 and the artificial bone 200 can slide on the axis of the guide wire 300 due to their own weight. be blocked.

Next, a brief description will be given of a surgical procedure using a medical system including the storage container 100, the artificial bone 200, and the guide wire 300. FIG. As described above, since the hollow-shaped artificial bone 200 is fragile, it is stored in the storage container 100 until just before it is introduced into the living body to protect it from tearing due to unnecessary impact from the outside. . First, an incision is made in the patient's skin, and one end of the guide wire 300 is introduced into the body through the incision and left therein. Next, the other end of the guide wire 300 is aligned with 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 still stored in the storage container 100, the operator can perform the filling operation without directly touching the artificial bone 200 with his or her fingers. Further, since the storage container 100 is provided with an opening at a position corresponding to the through hole of the artificial bone 200 , the guide wire 300 can be passed through the storage container 100 while the artificial bone 200 is stored in the storage container 100 . In addition, since the storage container 100 containing the artificial bone 200 does not move on the guide wire 300 by its own weight, the operator can place the storage container 100 at any position on the guide wire 300 as the surgery progresses. can be held. After the guide wire 300 is passed through the artificial bone 200 , the operator removes the artificial bone 200 from the container 100 by releasing the fixing function of the storage container 100 with one hand at the intended position. Then, only the artificial bone 200 starts to slide along the guide wire 300 and is guided by the guide wire 300 to be introduced into the living body through the incision site. As described above, according to this medical system, the artificial bone 300 can be safely introduced into the living body while being protected from external shocks and germs.

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 can be employed as long as they function to restrain the sliding of the main body portion 10. can. For example, as the braking portion 20, a string-like member that extends from the container body 10 and can be secured to the guide wire 300, a clip member that protrudes from the container body 10 and is used to sandwich the guide wire 300, Adhesive members (adhesive tape, etc.) for fixing to 30, packing members provided in the gap between the container body 10 and the guide wire 30 and formed of a high-friction material such as rubber, etc. can be adopted. can.

As described above, in the specification of the present application, the embodiments of the present invention have been described with reference to the drawings in order to express the content of the present invention. However, the present invention is not limited to the above embodiments, and includes modifications and improvements that are obvious to those skilled in the art based on the matters described in the specification of the present application.

TECHNICAL FIELD The present invention relates to a storage container for artificial bones and the like. Therefore, the present invention can be preferably used in the medical industry.

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

Claims (2)

an artificial bone having a through hole through which a guide wire can be inserted;
an openable and closable storage container capable of storing the artificial bone with the guide wire inserted therethrough ;
The storage container has a main body composed of a plurality of divided bodies, and the divided bodies are engaged to form a storage space for the artificial bone,
Each of the plurality of divided bodies has a notch formed at both front and rear end portions on the axis of the guide wire, and when the notches of the plurality of divided bodies are aligned, an opening through which the guide wire can be inserted is formed,
When the split body is engaged, the artificial bone remains stored in the storage space, and when the split body is deployed, the artificial bone is released from the storage space, and only the artificial bone is the guide. Comes to slide on the wire axis
Set product of artificial bone and storage container. The product set according to claim 1, wherein the diameter of the opening through which the guide wire can be inserted is larger than the through hole of the artificial bone.

Images