JP2020156613A - Medical equipment cover - Google Patents

Abstract

To provide a medical equipment cover making it easy to find an insertion position of medical equipment, and facilitating insertion of the medical equipment.SOLUTION: There are provided a bottomed cylindrical cover body member 13 having a closed one end part 11 and the other opened end part 12, and a restraining member. The cover body member 13 is provided with an insertion port part 14 which is restrained by the restraining member so as to be in a restrained state of having a size and a shape not allowing the insertion of an insertion side end 30a of medical equipment 30, and on the other hand, is expanded by itself from the restrained state to an extended state of having a size and a shape allowing the insertion of the insertion side end 30a of the medical equipment 30 by releasing restriction by the restraining member.SELECTED DRAWING: Figure 7

Description

The present disclosure relates to medical device covers.

A medical device cover for covering a medical device such as an external device, which is also called a motor drive unit to which a long body such as a diagnostic imaging catheter inserted into a living body is connected, is known (see, for example, Patent Document 1). ). With such a medical device cover, it is possible to separate the long body located in the clean field from the external device located in the dirty field. The medical device cover has a bottomed tubular cover body member having a closed one end and an open other end. The cover main body member may be provided with an insertion port portion into which an external device can be inserted at a portion between one end portion and the other end portion. Further, the cover main body member extends from the insertion port portion to the other end portion and is repeatedly folded back from the other end portion side so as to alternately turn inward in the radial direction and outward in the radial direction, and the peripheral edge of the insertion opening portion. An overlapping tubular portion may be provided having a shape that is folded back so that the portion is finally turned outward in the radial direction.

Japanese Unexamined Patent Publication No. 2012-50706

When the medical device cover as described above has, for example, the overlapping tubular portion as described above, the position of the insertion port portion may be difficult to understand, and it may be difficult to know where to insert the external device. Further, the cover is covered with the through-hole portion of the cover main body member located on the upper side so that the through-hole portion through which the long body of the cover main body member penetrates is aligned with the connection portion of the long body of the external device. It is preferable to insert the external device into the insertion port of the main body member, but there is a risk that the external device may be mistakenly inserted into the insertion port with the through-hole located on the lower side. However, in the medical device cover having the overlapping tubular portion and the through-hole portion as described above, or other medical device covers, the position of the insertion port portion can be easily understood and the medical device can be inserted into the insertion port portion. It would be convenient if it could be facilitated.

In view of these points, an object of the present disclosure is to provide a medical device cover in which the insertion position of the medical device is easy to understand and the medical device can be easily inserted.

The medical device cover as the first aspect of the present invention is
It has a bottomed tubular cover body member having a closed one end and an open other end, and a restraining member.
The cover body member is restrained by the restraining member so that the insertion side end portion of the medical device is restrained so as to have a size and shape that cannot be inserted, while the restraint by the restraining member is released. An insertion port portion is provided that self-expands from the restrained state to the deployed state having a size and shape capable of inserting the insertion side end portion of the medical device.

As one embodiment of the present invention, the medical device cover is a packaging body that wraps and stores the cover body member so that the restraint member holds the cover body member in the restrained state.

As one embodiment of the present invention, in the medical device cover, the cover main body member is housed in the package in a folded state.

As one embodiment of the present invention, a medical device cover
The cover main body member is arranged on the one end side of the insertion opening portion, and has a through opening portion for penetrating a long body to be inserted into a living body.
The insertion port portion has a substantially triangular shape or a substantially trapezoidal shape in which the width of the upper portion is smaller than the width of the lower portion when the through port portion is located on the upper side in the deployed state.

As one embodiment of the present invention, the medical device cover is arranged at the insertion port along the peripheral edge of the insertion port, and is restored from the elastically deformed state by releasing the restraint by the restraint member. An elastic member is provided that self-expands the insertion port portion to the unfolded state by the restoring force.

In one embodiment of the present invention, the elastic member of the medical device cover is made of a shape memory material.

As one embodiment of the present invention, a medical device cover
The elastic member is made of a metal material and
The cover body member has perforations provided along the elastic member.

As one embodiment of the present invention, the medical device cover extends from the insertion port portion to the other end portion of the cover main body member, and is radially inward and radial outer from the other end portion side. There is provided an overlapping tubular portion having a shape in which the peripheral edge portion of the insertion port portion is finally folded back outward in the radial direction after being repeatedly folded back so as to be alternately turned over.

According to the present disclosure, it is possible to provide a medical device cover in which the insertion position of the medical device is easy to understand and the medical device can be easily inserted.

FIG. 5 is an external view schematically showing a catheter for diagnostic imaging in a contracted state used together with a cover for a medical device according to an embodiment of the present invention. It is an external view which shows the extended state of the diagnostic imaging catheter shown in FIG. It is an external view which shows the state immediately after taking out the cover main body member from the package with respect to the cover for medical devices which concerns on one Embodiment of this invention. It is an external view which shows the state when the self-expansion of the insertion opening part progresses from the state shown in FIG. It is an external view which shows the state when the self-expansion of the insertion opening part progresses from the state shown in FIG. FIG. 5 is a sectional view taken along the line AA of FIG. It is an external view which shows the state when the self-expansion of the insertion opening part progresses from the state shown in FIG. FIG. 7 is a sectional view taken along the line AA of FIG. It is a top view which shows the state when the external device is inserted into the insertion opening part from the state shown in FIG. 7. It is a top view which shows the state when the overlap cylinder part of the cover main body member is expanded from the state shown in FIG.

Hereinafter, the medical device cover according to the embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 10, the medical device cover 10 (hereinafter, also referred to as the cover 10) according to the present embodiment is a long body inserted into a vessel such as a blood vessel in a living body such as a human body. It is used together with the catheter 20 and the external device 30 as a medical device. The catheter 20 is a diagnostic imaging catheter having an imaging core 21 that transmits / receives signals to / from an external device 30 and emits / receives exploration waves (ultrasonic waves and / or electromagnetic waves) in order to image the inside of a vessel such as a blood vessel. It is configured as.

The imaging core 21 has an output / output device 21a capable of transmitting / receiving exploration waves. Further, the imaging core 21 is provided with a tip portion integrally connected to the output / incident device 21a and a base end portion detachably connected to the rotation drive unit 31 of the external device 30, and is input from the rotation drive unit 31 of the external device 30. It has a drive shaft 21b that transmits the rotational movement to the ejector 21a. Further, the tip end portion of the drive shaft 21b is electrically connected to the ejector 21a, and the base end portion of the drive shaft 21b is electrically connectable to the external device 30. By connecting the base end portion of the drive shaft 21b to the rotary drive unit 31 of the external device 30, the external device 30 can rotate the ejector 21a about the central axis X via the drive shaft 21b. , A control signal is transmitted to the output / incident device 21a via the drive shaft 21b, the exploration wave is emitted from the output / incident device 21a toward the living body, and a measurement signal based on the reflected wave incident on the output / incident device 21a is transmitted to the drive shaft 21b. Can be received via.

The external device 30 is connected to a control device (not shown) composed of a processor such as a CPU via a cable 32, and the operation of the external device 30 is controlled by the control device. The measurement signal received by the external device 30 is transmitted to the control device via the cable 32, and the control device generates image data based on the measurement signal and outputs a device such as a display connected to the control device (not shown). Send to. The output device outputs an image (for example, an intravascular tomographic image and / or an intravascular 3D image) based on the received image data.

The catheter 20 has a tubular catheter body 22 that partitions the lumen that houses the imaging core 21. The catheter body 22 has a telescope portion 23 composed of a hand outer tube 23a and a hand inner tube 23b. The telescope portion 23 is in a contracted state in which the hand inner tube 23b has entered the hand outer tube 23a most deeply as shown in FIG. 1, and the hand inner tube 23b has entered the hand outer tube 23a most shallowly as shown in FIG. It can be expanded and contracted between the extended state.

As shown in FIG. 1, the base end portion of the hand outer tube 23a is composed of a tubular unit connector 23c. A base end portion of a tubular outer sheath 23d is integrally connected to the tip end portion of the unit connector 23c. The tip of the hand outer tube 23a is formed of the tip of the outer sheath 23d. A reduced diameter portion 23e whose outer diameter is reduced is provided at an intermediate portion in the axial direction of the unit connector 23c.

The base end of the tubular relay connector 24 is integrally connected to the tip of the outer sheath 23d. The base end of the tubular sheath 25 is integrally connected to the tip of the relay connector 24. The base end portion of the tip member 26 is integrally connected to the tip end portion of the sheath 25. The tip member 26 partitions a discharge port (not shown) for a priming solution such as a physiological saline solution that communicates with the lumen of the sheath 25. Further, the tip member 26 defines a cavity (not shown) into which a guide wire can be inserted.

The hand inner tube 23b has a tubular shape, and its base end portion is integrally connected to the tip end portion of the hub 27. The hub 27 has a hub main body 27a for partitioning the lumen extending along the central axis X and a side tube 27b for partitioning the lumen communicating with the lumen of the hub body 27a. The side tube 27b partitions the injection port of the priming liquid. As shown in FIG. 9, the base end portion of the hub 27 (base end portion of the hub main body 27a) is detachably connected to the rotation drive unit 31 of the external device 30 via the adapter 13b of the cover 10.

As described above, the catheter main body 22 is composed of the hand outer tube 23a (unit connector 23c, outer sheath 23d), the relay connector 24, the sheath 25, the tip member 26, the hand inner tube 23b, and the hub 27.

The base end portion of the imaging core 21 (base end portion of the drive shaft 21b) constitutes a connector 21c that is detachably and electrically connected to the rotation drive portion 31 of the external device 30. The connector 21c is housed in the cavity of the hub body 27a. The imaging core 21 is rotatably supported by the catheter body 22 about the central axis X. Further, the imaging core 21 is held by the hub 27 so as to be interlocked with the hand inner tube 23b and the hub 27 along the central axis X. In the contracted state of the telescope portion 23 as shown in FIG. 1, the ejector 21a of the imaging core 21 is located at the tip end portion of the sheath 25. Further, in the extended state of the telescope portion 23 as shown in FIG. 2, the ejector 21a of the imaging core 21 is located on the proximal end side of the sheath 25.

As shown in FIGS. 9 and 10, the external device 30 has a rectangular parallelepiped base 33 elongated in the front-rear direction about the central axis X. A columnar rotary drive unit 31 centered on the central axis X is arranged on the upper portion of the base 33. The rotation drive unit 31 is connected to the base 33 by the advance / retreat drive unit 34 so as to be able to move forward and backward relative to the base 33. In FIGS. 9 and 10, the rotation drive unit 31 is located at the rear end of the advance / retreat stroke. The length of the rotation drive unit 31 in the front-rear direction is shorter than the length of the base 33 in the front-rear direction. Further, the width of the rotation drive unit 31 is shorter than the width of the base 33.

In the present specification, for convenience of explanation, the vertical direction of the external device 30 means a direction perpendicular to the ground plane of the base 33, and the direction from the installation surface side toward the rotation drive unit 31 side is upward. The opposite direction is downward. Further, with respect to the external device 30 and the catheter 20, the anteroposterior direction (advance / retreat direction) means a direction along the central axis X, the direction from the proximal end to the distal end is the anterior (advancing direction), and the opposite direction is the posterior. (Retreat direction).

The advance / retreat drive unit 34 includes a ball screw mechanism that guides the rotation drive unit 31 in the advance / retreat direction, and a ball screw mechanism drive source composed of, for example, a motor that drives the ball screw mechanism so as to advance / retreat the rotation drive unit 31. It is configured. The rotation drive unit 31 drives a housing 31a fixed to the advance / retreat drive unit 34, a spindle rotatably supported by the housing 31a about the central axis X (not shown), and a spindle so as to rotate the spindle. For example, it has a spindle drive source (not shown) composed of a motor.

Further, a catheter connecting portion 35 connected to the proximal end portion of the catheter 20 is provided at the front end portion of the rotation driving unit 31. The catheter connecting portion 35 is an imaging core that is detachably connected to the base end portion of the catheter body 22 via the adapter 13b of the cover 10 and is electrically connected to the connector 21c of the imaging core 21. It has a connection part (not shown). The adapter connection portion 35a is integrally provided at the front end portion of the housing 31a. The imaging core connection portion is integrally provided at the front end portion of the spindle.

A unit connector fixing member 36 for fixing the unit connector 23c of the catheter 20 to the base 33 is arranged at the front end portion in the upper portion of the base 33. The unit connector fixing member 36 has an engaging portion 36a that is detachably engaged with the reduced diameter portion 23e of the unit connector 23c via the fixing portion 13c of the cover 10.

The cover 10 has a bottomed tubular cover body member 13 having a closed one end 11 and an open other end 12. The cover body member 13 has one bottomed tubular sheet member 13a having one end 11 and the other end 12. The sheet member 13a is preferably transparent, but may be translucent or opaque. The sheet member 13a is made of a soft synthetic resin such as polyethylene. The cover body member 13 may have an additional seat member, such as for reinforcement, that partially superimposes on the seat member 13a (eg, on the joint with the adapter 13b and its peripherals).

The seat member 13a has an insertion port portion 14 into which the front end portion of the base 33 as the insertion side end portion 30a of the external device 30 is inserted. Further, the cover main body member 13 is arranged on the side of one end portion 11 from the insertion port portion 14 and has a through port portion 15 through which the catheter 20 is penetrated. The through-hole portion 15 is composed of an inner peripheral surface of a two-stage tubular adapter 13b having a large-diameter portion and a small-diameter portion on the outer peripheral surface. The adapter 13b is joined to the seat member 13a with a large diameter portion located on the outside of the seat member 13a and a small diameter portion located on the inside of the seat member 13a. In FIG. 9, the small diameter portion on the outer peripheral surface of the adapter 13b is detachably connected to the adapter connecting portion 35a of the external device 30. In FIG. 9, the proximal end portion of the catheter body 22 is detachably connected to the inner peripheral surface of the adapter 13b.

The seat member 13a has a fixing portion 13c located on the one end portion 11 side of the adapter 13b. A fixed portion marking label is attached to the fixed portion 13c. In FIG. 9, the fixing portion 13c is sandwiched between the engaging portion 36a of the unit connector fixing member 36 and the reduced diameter portion 23e of the unit connector 23c.

As shown in FIGS. 9 and 10, the sheet member 13a extends from the insertion port portion 14 to the other end portion 12, and is alternately turned from the other end portion 12 side to the radial inner side and the radial outer side. There is provided an overlapping tubular portion 16 having a shape that is folded back a plurality of times and folded back so that the peripheral edge portion of the insertion port portion 14 is finally turned outward in the radial direction. The overlapping tubular portion 16 is in an expanded state as shown in FIG. 10 by extending the other end portion 12 so as to be away from the one end portion 11, and covers the cable 32 to a predetermined range from the tip end portion toward the base end portion. Can be done. The overlapping tubular portion 16 is folded back a plurality of times so as to be alternately turned inward in the radial direction and outward in the radial direction from the side of the other end portion 12, and is folded back so that the peripheral edge portion of the insertion port portion 14 is finally turned outward in the radial direction. It is preferable that the shape is obtained by the above, but the folding procedure is not limited to this as long as the shape is obtained. Further, in the present embodiment, the overlapping tubular portion 16 has a shape that is first folded inward in the radial direction from the side of the other end portion 12, but has a diameter first from the side of the other end portion 12. It may have a shape that is folded back so as to turn outward in the direction.

In the present embodiment, the position of the insertion port portion 14 in the cover main body member 13 is set to a position where the external device 30 does not fit into the cover main body member 13 in the state before the overlapping tubular portion 16 is deployed. However, the position of the insertion port 14 in the cover body member 13 can be changed as appropriate, and the external device 30 may be set to a position where the external device 30 can fit into the cover body member 13 in the state before the overlapping cylinder portion 16 is deployed. ..

When using the cover 10, a medical worker first inserts the external device 30 from the insertion port 14, unfolds the overlapping tubular portion 16, and uses the cover body member 13 to determine a predetermined portion of the external device 30 and the cable 32. And cover. Then, the medical worker connects the adapter 13b to the rotation drive unit 31 of the external device 30. At this time, the rotation drive unit 31 is located at the rear end of the advance / retreat stroke. The healthcare professional then primes the catheter 20 with the telescope portion 23 of the catheter 20 extended. Then, the medical worker connects the proximal end portion of the catheter 20 to the rotation drive portion 31 of the external device 30 via the adapter 13b. Further, the medical worker attaches and fixes the unit connector 23c of the catheter 20 to the unit connector fixing member 36 of the external device 30 via the fixing portion 13c of the cover main body member 13. The procedure for using the cover 10 is not limited to such a procedure, and can be changed as appropriate.

In this way, by connecting the catheter 20 to the external device 30 in a state where the cover main body member 13 of the cover 10 covers the external device 30 and the predetermined portion of the cable 32, the external device 30 and the cable located in the unclean field are connected. The catheter 20 located in the clean field can be isolated from the 32 to prevent the catheter 20 and the like from being contaminated.

When using the catheter 20 from this state, first, a medical worker operates a control device to advance the rotation drive unit 31 to the front end of the advance / retreat stroke. By this advancement, the imaging core 21 of the catheter 20 also advances to the front end of the advance / retreat stroke together with the hub 27 and the hand outer tube 23a. At this time, the ejector 21a provided at the tip of the imaging core 21 advances to the tip of the sheath 25.

Then, the medical staff engages the tip member 26 of the catheter 20 with the guide wire that has reached the lesion inside the vessel such as a blood vessel of the living body, and the ejector 21a of the imaging core 21 removes the lesion. The tip of the catheter 20 is inserted into the living body until it is crossed. From this state, the medical staff operates the control device to perform imaging by the imaging core 21. At this time, the rotation drive unit 31 retreats to the rear end of the advancing / retreating stroke while rotating the main shaft, so that the output / incident device 21a transmitting and receiving the exploration wave is retracted while rotating inside the sheath 25, and the output / incident is incident. The vessel 21a can be made to acquire a signal for generating an image of the lesion.

In this embodiment, as shown in FIG. 3, the cover 10 has a restraining member 17. Further, the insertion port portion 14 of the cover main body member 13 restrains the insertion side end portion 30a of the external device 30 so as to be in a restrained state (state shown by a two-dot chain line in FIG. 3) having a size and shape that cannot be inserted. While being restrained by the member 17, the restraint by the restraining member 17 is released, so that the insertion side end portion 30a of the external device 30 can be inserted into the unfolded state (FIGS. 7 and 7). It is configured to self-expand to the state shown in 8).

As shown in FIG. 3, the restraint member 17 is a packaging body 18 that wraps and stores the cover main body member 13 so as to hold the cover main body member 13 in the restrained state. The cover main body member 13 is housed in the package 18 in a folded state in the restrained state shown by the alternate long and short dash line in FIG. The packaging body 18 is configured so that the restraint on the cover main body member 13 can be released by taking out the cover main body member 13 from the packaging body 18.

The package 18 has a mouth portion 18a that can be opened in order to take out the cover main body member 13 in the folded state. The package 18 is not limited to the one having such a mouth portion 18a, and may be configured to be rupturable at any portion in order to take out the cover main body member 13 in the folded state, for example. The restraining member 17 is not limited to the packaging body 18, and may be, for example, a clip member that is detachably engaged with the cover main body member 13 so as to hold the cover main body member 13 in a restrained state.

As shown in FIGS. 7 and 8, the insertion port 14 of the cover body member 13 is arranged along the peripheral edge of the insertion port 14, and is released from the elastically deformed state by releasing the restraint by the restraint member 17. An elastic member 14a that restores and self-expands the insertion port 14 to the deployed state by the restoring force is provided.

The insertion port portion 14 has a substantially triangular shape in which the width of the upper portion is smaller than the width of the lower portion when the through port portion 15 is located on the upper side in the deployed state. The shape of the insertion port portion 14 is not limited to a substantially triangular shape. For example, the insertion port portion 14 may have a substantially trapezoidal shape in which the width of the upper portion is smaller than the width of the lower portion when the through port portion 15 is located on the upper side in the deployed state.

The elastic member 14a is made of a Ni—Ti (nickel-titanium) -based shape memory alloy. The elastic member 14a may be made of a shape memory alloy other than Ni—Ti (nickel-titanium). The elastic member 14a may be made of a shape memory material other than an alloy (for example, a synthetic resin type). By forming the elastic member 14a with a shape memory material, it is possible to obtain a high restoring force for self-expanding the insertion port portion 14 to the deployed state. However, the elastic member 14a is not limited to the one made of a shape memory material.

As shown in FIG. 10, the seat member 13a of the cover body member 13 has two perforations 14b provided along the elastic member 14a. The elastic member 14a is provided over the peripheral edge portion of the insertion port portion 14, and one of the two perforations 14b is provided on the tip end side (front side) of the elastic member 14a, and the base end side (base end side) of the elastic member 14a ( The other of the two perforations 14b is provided on the rear side). Therefore, after the cover body member 13 is used (after imaging), the sheet member 13a is broken at the two perforations 14b, so that the metal elastic member 14a can be easily separated and discarded. However, the sheet member 13a is not limited to the one having such two perforations 14b.

As shown in FIGS. 7 and 8, the elastic member 14a is composed of a wire extending over the peripheral edge of the insertion port 14. However, the elastic member 14a is not limited to the one made of wires, and may be made of, for example, a tubular member concentric with the insertion port portion 14. The elastic member 14a is not limited to the one extending over the peripheral edge portion of the insertion opening portion 14, and may extend over only a part of the peripheral edge portion of the insertion opening portion 14.

The elastic member 14a is embedded in the sheet member 13a at the peripheral edge of the insertion port 14. However, the elastic member 14a may be provided on the inner surface and / or the outer surface of the sheet member 13a at the peripheral edge of the insertion port 14. The elastic member 14a may be detachably attached to the sheet member 13a.

The overlapping tubular portion 16 is folded back six times so as to be turned outward in the radial direction with the peripheral edge portion of the insertion port portion 14 as the first crease. However, the number of turns of the overlapping cylinder portion 16 can be changed as appropriate. The cover body member 13 is not limited to the one having the overlapping tubular portion 16.

The cover 10 has two straight lines shown by a two-dot chain line in FIG. 5 from a state in which the insertion port portion 14 is flatly crushed as shown in FIGS. 5 and 6 against the elastic force of the elastic member 14a. As creases, both sides are folded as shown in FIG. Further, the cover 10 has a front portion folded as shown in FIG. 3 with the straight line shown by the alternate long and short dash line in FIG. 4 as a crease.

Therefore, as shown in FIG. 3, the cover main body member 13 goes through the state shown in FIG. 4 due to the restoring force of the elastic member 14a when the medical worker takes out the cover main body member 13 from the mouth portion 18a of the packaging body 18. , The folded state can be canceled to the state shown in FIGS. 5 and 6, and the insertion port portion 14 can be self-expanded to the unfolded state shown in FIGS. 7 and 8. Therefore, even when the cover main body member 13 has the overlapping tubular portion 16 as in the case of the present embodiment, the position of the insertion port portion 14 into which the external device 30 should be inserted becomes clear at a glance. That is, in the state shown in FIG. 6, it is difficult to distinguish between the insertion port portion 14 and the portion between the folds in the overlapping cylinder portion 16, but the insertion port portion 14 is in a self-expanded state as shown in FIG. Then, it can be easily distinguished. Further, at this time, since the insertion port portion 14 has a size and a shape into which the insertion side end portion 30a of the external device 30 can be inserted, the external device 30 can be easily inserted.

Further, since the insertion port portion 14 has a substantially triangular shape in which the width of the upper portion is smaller than the width of the lower portion when the through port portion 15 is located on the upper side in the deployed state, the insertion port portion 14 is formed on the upper portion of the base 33. It is obvious that the external device 30 provided with the rotation drive unit 31 having a width smaller than the width of the base 33 may be inserted into the insertion port 14 as it is. Therefore, it is possible to reduce the possibility that the external device 30 is accidentally inserted into the insertion port 14 in a state where the through port 15 is located on the lower side.

It goes without saying that the above-described embodiment is merely an example of the embodiment of the present invention and can be variously modified without departing from the gist of the invention.

In the above-described embodiment, the catheter 20 is used as a long body to be inserted into a living body. However, the cover 10 of the present embodiment can be applied not only when the catheter 20 is used as a long body to be inserted into the living body, but also when, for example, an endoscope is used.

10 Medical device cover 11 One end 12 One end 13 Cover body member 13a Seat member 13b Adapter 13c Fixing part 14 Insertion port 14a Elastic member 14b Perforation 15 Through port 16 Overlapping tube 17 Restraining member 18 Packaging 18a port Part 20 Catheter 21 Imaging core 21a Outlet injector 21b Drive shaft 21c Connector 22 Catheter body 23 Telescope part 23a Hand outer tube 23b Hand inner tube 23c Unit connector 23d Outer sheath 23e Reduced diameter part 24 Relay connector 25 Sheath 26 Tip member 27 Hub 27a Hub body 27b Side tube 30 External device (medical device)
30a Insertion side end 31 Rotational drive 31a Housing 32 Cable 33 Base 34 Advance / retreat drive 35 Catheter connection 35a Adapter connection 36 Unit connector fixing member 36a Engagement X Central axis

Claims (8)

It has a bottomed tubular cover body member having a closed one end and an open other end, and a restraining member.
The cover body member is restrained by the restraining member so that the insertion-side end of the medical device is restrained so as to have a size and shape that cannot be inserted, while the restraint by the restraining member is released. A medical device cover provided with an insertion port that self-expands from the restrained state to a deployed state having a size and shape capable of inserting the insertion side end portion of the medical device. The medical device cover according to claim 1, wherein the restraining member is a packaging body that wraps and stores the cover main body member so as to hold the cover main body member in the restrained state. The cover for a medical device according to claim 2, wherein the cover main body member is housed in the package in a folded state. The cover main body member is arranged on the one end side of the insertion opening portion, and has a through opening portion for penetrating a long body to be inserted into a living body.
Claims 1 to 3 that the insertion port portion has a substantially triangular shape or a substantially trapezoidal shape in which the width of the upper portion is smaller than the width of the lower portion when the through port portion is located on the upper side in the deployed state. The medical device cover according to any one of the items. The insertion port is arranged along the peripheral edge of the insertion port and is restored from the elastically deformed state by releasing the restraint by the restraining member, and the restoring force brings the insertion port to the unfolded state. The cover for a medical device according to any one of claims 1 to 4, which is provided with an elastic member that expands by itself. The medical device cover according to claim 5, wherein the elastic member is made of a shape memory material. The elastic member is made of a metal material and
The medical device cover according to claim 5 or 6, wherein the cover main body member has perforations provided along the elastic member. The cover main body member extends from the insertion port portion to the other end portion, and is repeatedly folded back from the other end portion side so as to be alternately turned inward in the radial direction and outward in the radial direction, and the insertion port portion is formed. The medical device cover according to any one of claims 1 to 7, further comprising an overlapping tubular portion having a shape in which the peripheral edge portion of the cover is finally turned outward in the radial direction.

Images