Attachment and detachment system
Patent Information
- Application Number
- JP2022088453
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2022-05-31
- Publication Date
- 2025-09-04
- Estimated Expiration
- 2042-05-31
AI Technical Summary
The challenge of quickly and efficiently attaching and detaching extracorporeal membrane oxygenation (ECMO) devices, which are heavy and require manual operation, is exacerbated during emergencies like patient transport or X-ray procedures, leading to time wastage.
An attachment/detachment system featuring a clamp, holder, and connecting parts with a handle that facilitates secure attachment and detachment by sliding and vertical motion, eliminating the need for manual operation of clamps.
The system allows for rapid and secure attachment of ECMO devices without wasting time, even in emergencies, by utilizing a handle for easy handling and alignment with the clamp, ensuring quick and stable fixation.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to a detachable system for detachably fixing a medical device to a support column.
Background Art
[0002] An extracorporeal membrane oxygenator (ECMO) has a disposable module (medical device) in which an artificial lung and a blood pump are pre-assembled. Such a module is used by being fixed to a support column via a holder (for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] With the spread of coronavirus disease, the number of cases of attaching ECMO to critically ill patients and performing emergency transportation has been increasing. In such cases, treatments such as establishing ECMO-based treatment at the scene and then transporting the patient to a medical facility are carried out.
[0005] In the treatment of coronavirus disease, for example, during patient transportation or chest X-ray imaging, etc., opportunities for detaching ECMO from the support column frequently occur. Conventionally, detaching ECMO requires a medical worker to hold the medical device horizontally with one hand and operate a clamp attached to the support column with the other hand. However, ECMO includes heavy objects such as a motor that operates a blood pump and an artificial lung filled with blood and increased in weight, and operating the clamp while supporting such heavy objects is difficult for medical workers. Therefore, conventional ECMO has a problem that, despite being urgent, it is likely to cause a loss of time for attachment and detachment to the support column.
[0006] The present invention aims to solve the above-mentioned problems. [Means for solving the problem]
[0007] One aspect of the following disclosure is a detachable system comprising: a clamp that can be attached to a support column; a holder for holding a medical device; a connecting portion fixed to the holder and detachably connecting the holder to the clamp; and a handle fixed to the holder and protruding above the holder. [Effects of the Invention]
[0008] The attachment and detachment system described above facilitates the holding and mounting of medical devices by the handle. This allows the attachment and detachment system to quickly secure medical devices to the support column without wasting time in emergencies. [Brief explanation of the drawing]
[0009] [Figure 1] Figure 1 is a perspective view showing the attachment / detachment system according to the first embodiment with a medical device attached. [Figure 2] Figure 2 is a perspective view of the medical device shown in Figure 1. [Figure 3] Figure 3 is a front perspective view of the attachment / detachment system shown in Figure 1. [Figure 4] Figure 4 is a perspective view showing the rotational displacement of the rotating arm of the attachment / detachment system in Figure 3. [Figure 5] Figure 5 is a rear perspective view of the detachable system shown in Figure 1. [Figure 6] Figure 6A is a partially enlarged view of the connecting section in Figure 1, and Figure 6B is a cross-sectional view of the connecting section in Figure 6A. [Figure 7] Figure 7A is a perspective view of the clamp in Figure 1, and Figure 7B is a perspective view showing the guide plate of the clamp in Figure 7A. [Figure 8] Figure 8A is a side view showing the method of connecting the connecting part and the clamp, and Figure 8B is a cross-sectional view showing the connected state of the connecting part and the clamp. [Figure 9]Figure 9 is an explanatory diagram showing the holder and handle of the attachment / detachment system according to the second embodiment, with a medical device (manual crank) attached. [Modes for carrying out the invention]
[0010] (First Embodiment) As shown in Figure 1, the attachment / detachment system 10 according to this embodiment includes a holder 14 for holding the medical device 12 and a clamp 16. As shown in Figure 2, the medical device 12 of this embodiment includes an artificial lung 18 and a blood pump 20, and constitutes part of an ECMO device. The medical device 12 is a disposable instrument. The artificial lung 18 and the blood pump 20 are integrally connected by a connecting member 24 having a handle 22. The handle 22 is used to attach the medical device 12 to the holder 14.
[0011] In the medical device 12, although not shown in the illustration, the connection ports of the artificial lung 18 and the blood pump 20 are connected to a blood withdrawal tube that guides blood from the patient to the artificial lung 18 and a blood delivery tube that delivers blood from the blood pump 20. The medical device 12 is provided with the blood withdrawal tube and blood delivery tube pre-connected.
[0012] As shown in Figure 1, the holder 14 holds the medical device 12 on its front side. The holder 14 is used for treatment while holding the medical device 12. The holder 14 and the medical device 12 are attached to the support column 26 via a clamp 16 on the rear side.
[0013] As shown in Figure 3, the holder 14 includes a support plate 28, a pump holding part 30, a drive motor 32, a rear beam part 34, a handle 36, a connecting part 38, and a priming stay 40. The support plate 28 has a main body part 28a and a support part 28b that is bent at 90° from the bottom of the main body part 28a and extends forward. The support plate 28 has an L-shape when viewed from the side. The main body part 28a is arranged along the vertical direction when in use. The main body part 28a is wide when viewed from the front. The support part 28b is integrally connected to the main body part 28a via a bent part 28c that forms part of the bottom of the main body part 28a. The bent part 28c extends in the width direction. The support part 28b extends in the horizontal direction. The support part 28b and the main body part 28a constitute an artificial lung holding part 31 that holds the artificial lung 18. The main body 28a has an artificial lung locking mechanism 28d that engages with the artificial lung 18.
[0014] The pump holder 30 is located on the left side of the support plate 28 when viewed from the front. The pump holder 30 is the part that holds the blood pump 20 and the drive motor 32.
[0015] The drive motor 32 has a pump mounting surface 32a and a pump fixing mechanism 32b on its front side. The drive surface of the blood pump 20 is attached to the pump mounting surface 32a. The drive motor 32 has a permanent magnet on the inside of the pump mounting surface 32a, and by rotating the permanent magnet, it generates a rotating magnetic field on the pump mounting surface 32a. The drive motor 32 drives the blood pump 20 with the rotating magnetic field. The pump fixing mechanism 32b fixes the blood pump 20 to the pump mounting surface 32a in a removable manner.
[0016] As shown in FIG. 5, the rear beam portion 34 is disposed on the rear side of the support plate 28. The rear beam portion 34 supports the support plate 28 so as to be rotatable via a hinge portion 35. The rear beam portion 34 has a beam main body 34a that supports the support plate 28 over substantially the entire width direction of the support plate 28. The rear beam portion 34 further has an intermediate connection portion 34b that protrudes toward the rear side from the beam main body 34a. The intermediate connection portion 34b is disposed at the same position as the center-of-gravity position in the width direction of the holder 14 (see FIG. 1) holding the medical device 12. The holder 14 is determined by the arrangement relationship between the artificial lung 18 having a large weight due to being filled with blood inside and the heavy drive motor 32. In the present embodiment, as shown in the drawing, the position of the intermediate connection portion 34b, which is the center-of-gravity position in the width direction, is disposed at a position closer to the pump holding portion 30 than the center of the support plate 28.
[0017] The intermediate connection portion 34b further has a connection recess 34c and a rear end portion 34d. The connection recess 34c is a recess to which the base portion 36a of the handle 36 is connected. The rear end portion 34d is connected to the connecting portion 38.
[0018] The handle 36 has a shape bent in an L shape in a side view. The handle 36 is connected to the rear beam portion 34 with the base portion 36a inserted into the connection recess 34c. The base portion 36a of the handle 36 extends upward from the connection recess 34c. The upper end of the base portion 36a is connected to a grip portion 36c that extends forward via a bent portion 36b. The grip portion 36c is perpendicular to the support plate 28 and extends forward. A part near the tip of the grip portion 36c protrudes forward of the main body portion 28a of the support plate 28. The grip portion 36c is disposed above the center-of-gravity position in the width direction of the holder 14 holding the medical device 12. Such a handle 36 facilitates the conveyance of the holder 14 holding the medical device 12 while maintaining it horizontally.
[0019] The connecting portion 38 is a connecting structure that is connected to the clamp 16 by a sliding motion. The connecting portion 38 is connected to the support plate 28 via the rear beam portion 34. As shown in Figure 6A, the connecting portion 38 has a box shape. As shown in Figure 5, the connecting portion 38 has a housing portion 38a, a guide groove 38b, a restricting wall 38c, and a locking lever 38d. The housing portion 38a houses the guide plate 46 (Figure 7B) of the clamp 16. The housing portion 38a has a pair of guide grooves 38b on both sides in the width direction. The guide grooves 38b extend in the vertical direction. The housing portion 38a and the guide grooves 38b open downwards. The guide grooves 38b engage with the guide rails 46a of the guide plate 46 (Figure 7B) by a sliding motion in the vertical direction. The restricting wall 38c is located at the upper end of the housing portion 38a and the guide grooves 38b.
[0020] The restricting wall 38c restricts the movement of the guide plate 46 by closing the upper ends of the housing portion 38a and the guide groove 38b. As shown in Figure 6A, the lock lever 38d is attached to the lever mounting hole 38e at the upper end of the connecting portion 38. The lock lever 38d protrudes upward from the connecting portion 38 and is rotatable. As shown in Figure 6B, the lock lever 38d further has a shaft pin 39a, a biasing portion 39b, and a claw portion 39c. The shaft pin 39a extends in the width direction and constitutes the pivot axis of the lock lever 38d. The shaft pin 39a is held in the lever mounting hole 38e (Figure 6A). The biasing portion 39b is the part that extends forward from the pivot axis of the lock lever 38d. The biasing portion 39b is biased upward by a spring 39e. The claw portion 39c extends downward from the pivot axis. The claw portion 39c engages with the engagement hole 46c of the guide plate 46, thereby fixing the connecting portion 38 to the clamp 16.
[0021] As shown in Figure 3, the priming stay 40 is positioned below the support plate 28. The priming stay 40 has a pair of arms 40b, a pivot shaft portion 40c, a pivot arm 40d, and a tube support portion 40e. The downward extension portion 40a is fixed to the back surface of the support plate 28 and extends downward from the support plate 28. The pair of arms 40b are connected to the sides of the support plate 28 and the sides of the pump holding portion 30, respectively. The pair of arms 40b extend forward from the support plate 28 and the pump holding portion 30. The pair of arms 40b are spaced apart from each other in the width direction. The pivot shaft portion 40c is attached to the front ends of each of the pair of arms 40b. The pivot shaft portion 40c supports the base end of the pivot arm 40d. A pair of pivot arms 40d are provided. Each of the rotating arms 40d is rotatably attached to a pair of arms 40b via a pivot shaft portion 40c at its base end.
[0022] The rotating arm 40d is rotated to a position that protrudes forward, as shown in Figure 4, during the priming process to expel air from the artificial lung 18. In the priming process, saline solution is introduced into the artificial lung 18, and the support plate 28 is rotated so that the main body 28a is horizontal in order to expel the air from inside. The priming stay 40 is positioned above the artificial lung 18 during the priming process to support the tube connected to the artificial lung 18 and prevent blockage due to the tube bending.
[0023] Furthermore, in the initial state as provided by the manufacturer and in the usage state, the rotating arm 40d is folded to the rear, as shown in Figure 3.
[0024] The tube support portion 40e is located near the tip of the rotating arm 40d. The tube support portion 40e consists of a pipe extending in the width direction and is joined so as to span between one rotating arm 40d and the other rotating arm 40d. The holder 14 of this embodiment has two tube support portions 40e.
[0025] The holder 14 of this embodiment has the above configuration. The attachment / detachment system 10 further includes a clamp 16 (see Figure 1).
[0026] As shown in Figure 7A, the clamp 16 has a base portion 16a and clamp arms 16b and 16c extending from the base portion 16a. The clamp 16 has a movable piece 16d between the clamp arms 16b and 16c. The distance between the movable piece 16d and the clamp arms 16b is changed by a knob 16e. The support column 26 is sandwiched between the movable piece 16d and the clamp arms 16b. When the knob 16e is tightened, the clamp arms 16b and the movable piece 16d grip the support column 26, fixing the clamp 16 to the support column 26.
[0027] As shown in Figure 7B, the clamp 16 has a flat mounting surface 16f on the outside of the base portion 16a. The clamp 16 has a guide plate 46 on the mounting surface 16f. The guide plate 46 has a rectangular shape. The guide plate 46 has a guide rail 46a and an engaging portion 46b. The guide rail 46a is formed on both sides of the guide plate 46 in the width direction. The guide rail 46a protrudes briefly in the width direction and extends in the vertical direction of the guide plate 46. The engaging portions 46b are located at the upper end and the lower end of the guide plate 46. Each engaging portion 46b has an engaging hole 46c. The engaging hole 46c engages with the claw portion 39c of the connecting portion 38, thereby preventing the clamp 16 and the connecting portion 38 from falling off. Because the guide plate 46 has engaging portions 46b at its upper and lower ends, it has a vertically symmetrical shape. Therefore, regardless of the mounting direction of the knob 16e, the engaging portion 46b appears on the upper side of the clamp 16, ensuring that the connecting portion 38 is securely fixed with the claw portion 39c.
[0028] The attachment / detachment system 10 of this embodiment has the above configuration. This attachment / detachment system 10 operates as described below.
[0029] As shown in Figure 8A, the clamp 16 is pre-fixed to the support column 26. The holder 14 (Figure 1) with the medical device 12 attached is transported so that the connecting portion 38 is positioned above the clamp 16. The holder 14 is then attached to the clamp 16 by sliding it so that the guide plate 46 is inserted into the housing portion 38a (see Figure 5) of the connecting portion 38. The attachment of the holder 14 is performed by a medical professional who grasps the handle 36. As shown in Figure 1, the handle 36 is positioned above the center of gravity of the holder 14, making it easy for the user and the holder 14 to be kept horizontal. Also, since the handle 36 is positioned near the connecting portion 38, the user can easily align the connecting portion 38 with the guide plate 46 of the clamp 16.
[0030] The guide rail 46a of the guide plate 46 slides while engaging with the guide groove 38b of the connecting portion 38. The guide plate 46 stops when it comes into contact with the restricting wall 38c of the connecting portion 38. As shown in Figure 8B, when the guide plate 46 stops, the claw portion 39c of the lock lever 38d of the connecting portion 38 engages with the engagement hole 46c of the engagement portion 46b. The lock lever 38d prevents the connecting portion 38 and the guide plate 46 from separating. In this way, the holder 14 is fixed to the clamp 16.
[0031] The holder 14 is removed from the clamp 16 by operating in the reverse order of the above description. That is, the lock lever 38d is lowered, releasing the engagement between the claw portion 39c and the engaging portion 46b. Next, with the lock lever 38d still in the lowered position, the holder 14 is lifted upward relative to the clamp 16. This causes the connecting portion 38 to slide relative to the guide plate 46, and the connecting portion 38 is released from the guide plate 46. In this way, the attachment / detachment system 10 of this embodiment allows the holder 14 to be easily attached to and detached from the support column 26.
[0032] (Second Embodiment) The attachment / detachment system 10A of this embodiment, shown in Figure 9, comprises a medical device 12A, a holder 14A, and a clamp 16. Note that the clamp 16 is the same as the clamp 16 described with reference to Figures 7A and 7B. Therefore, a description of the clamp 16 is omitted.
[0033] The medical device 12A of this embodiment is a manual crank attached to an ECMO machine. The medical device 12A is used when the drive motor 32 in Figure 1 fails or in emergencies such as power outages. The medical device 12A has a rectangular parallelepiped housing 50, a crank 52, and a pump mounting surface 32a. The crank 52 extends from the front side of the housing 50. The housing 50 has a speed increaser that is rotated by the crank 52. The rotational motion input through the crank 52 is increased to a predetermined rotational speed by the speed increaser. The speed increaser generates a rotating magnetic field on the pump mounting surface 32a by rotating a permanent magnet inside the pump mounting surface 32a.
[0034] The medical device 12A is attached to the front side of the holder 14A. The holder 14A has a support plate 28A, a handle 36A, and a connecting portion 38. The support plate 28A has a main body portion 54a that extends vertically and a support portion 54b that extends forward. The support portion 54b extends from the lower end of the main body portion 54a via a bent portion 54c. The handle 36A has a plate body 56a joined to the main body portion 54a of the support plate 28A, and a gripping portion 56b that extends forward from the upper end of the plate body 56a. The plate body 56a extends above the medical device 12A. The gripping portion 56b has a rod shape and protrudes forward from the main body portion 54a of the support plate 28A. The gripping portion 56b is positioned above the medical device 12A.
[0035] The connecting portion 38 is the same as the connecting portion 38 of the first embodiment described with reference to Figures 5 to 6B. The connecting portion 38 is joined to the back side of the plate 56a.
[0036] The attachment / detachment system 10A of this embodiment operates in the same manner as the attachment / detachment system 10 of the first embodiment, which was described with reference to Figures 8A and 8B, allowing the holder 14A to be easily attached to and detached from the support column 26.
[0037] The above embodiments can be summarized below.
[0038] One perspective is a detachable system 10, 10A comprising a clamp 16 that can be attached to a support column 26, holders 14, 14A that hold medical devices 12, 12A, a connecting part 38 fixed to the holder and detachably connecting the holder to the clamp, and a handle 36, 36A fixed to the holder and protruding above the holder.
[0039] The above-described attachment and detachment system facilitates the holding and mounting of medical devices using a handle. This allows the attachment and detachment system to quickly secure medical devices to the support column without wasting time in emergencies.
[0040] In the above attachment / detachment system, the connecting portion and the clamp may be attached and detached by a sliding motion in the vertical direction. This attachment / detachment system eliminates the need to operate the clamp knob, allowing the medical device to be quickly secured to the support column without wasting time in an emergency.
[0041] In the above attachment / detachment system, the handle may have rod-shaped gripping portions 36c and 56b at its tip. In this case, the gripping portions may be located above the center of gravity of the medical device. Furthermore, the holder may have support plates 28 and 28A for holding the medical device, and the gripping portions may extend perpendicularly to the support plates. This attachment / detachment system facilitates gripping heavy medical devices without tilting them.
[0042] In the above-described attachment / detachment system, the connecting portion and the handle may be at the same widthwise position when viewed from the front. In this attachment / detachment system, the position of the connecting portion and the position of the handle coincide, making it easy to attach the connecting portion to the clamp.
[0043] In the above attachment / detachment system, the clamp has a guide plate 46, the connecting portion has a housing portion 38a that receives the guide plate, and the connecting portion may be connected to the clamp by sliding along the guide plate. This attachment / detachment system allows for easy attachment and detachment to the support column by the sliding motion of the connecting portion and the guide plate.
[0044] In the above attachment / detachment system, the guide plate has guide rails 46a extending in the vertical direction on one side and the other side in the width direction, and the housing has guide grooves 38b for receiving the guide rails on one side and the other side in the width direction, and the housing may be attached to and detached from the clamp by sliding in the vertical direction. This attachment / detachment system can be easily attached to a support column by the vertical sliding operation.
[0045] In the above attachment / detachment system, the guide plate may have an engagement hole 46c at at least one of its upper and lower ends, and the housing may have a lock lever 38d that engages with the engagement hole. This attachment / detachment system prevents the holder from falling off the clamp by the engagement of the lock lever with the engagement hole.
[0046] In the above attachment / detachment system, the holder includes a support plate that supports the medical device and a rotating arm 40d positioned below the support plate and rotating around an axis in the width direction, and the rotating arm may have a widening portion 41 that widens in the width direction.
[0047] In the above attachment / detachment system, the medical device comprises a blood pump 20 and an artificial lung 18, and the holder comprises a pump holding portion 30 for holding the blood pump and an artificial lung holding portion 31 for holding the artificial lung, wherein the pump holding portion and the artificial lung holding portion may be arranged horizontally. This attachment / detachment system facilitates the transport of patients using a medical device (e.g., an ECMO device) having an artificial lung and a blood pump.
[0048] Furthermore, the present invention is not limited to the disclosures described above, and can adopt various configurations without departing from the spirit of the invention. [Explanation of Symbols]
[0049] 10, 10A… Detachable systems 12, 12A… Medical devices 14, 14A...Holder 16...Clamp 18…Artificial lung 20…Blood pump 26…Strut 28, 28A…Support plate 30...Pump holder 31...Artificial lung holder 36, 36A...Handle 36c...Gripping part 38...Connecting section 38a...Storage section 38b... Guide groove
Claims
1. A clamp that can be attached to a support, a holder for holding a medical device; a connecting portion fixed to the holder and detachably connecting the holder to the clamp; a handle fixed to the holder and protruding above the holder; A detachable system comprising:
2. The detachable system according to claim 1, The connecting portion and the clamp are attached and detached by a sliding movement in the up and down direction.
3. The attachment / detachment system according to claim 1 , wherein the handle has a rod-shaped grip portion at a distal end thereof.
4. The attachment / detachment system according to claim 3 , wherein the gripping portion is located above the center of gravity of the medical device.
5. The attachment / detachment system according to claim 3 , wherein the holder has a support plate that supports the medical device, and the gripping portion extends in a direction perpendicular to the support plate.
6. The detachable system according to claim 1 , wherein the connecting portion and the handle are positioned at the same widthwise position when viewed from the front side.
7. 3. The detachable system according to claim 2, wherein the clamp has a guide plate, the connecting portion has a receiving portion that receives the guide plate, and the connecting portion is connected to the clamp by sliding along the guide plate.
8. 8. The attachment / detachment system according to claim 7, wherein the guide plate has guide rails extending in the up-down direction on one side and the other side in the width direction, the accommodation portion has guide grooves on one side and the other side in the width direction, the guide grooves receiving the guide rails; An attachment / detachment system in which the storage portion is attached to and detached from the clamp by sliding in the up and down direction.
9. 8. The attachment / detachment system according to claim 7, wherein the guide plate has an engagement hole at at least one of an upper end and a lower end, The accommodating portion has a lock lever that engages with the engagement hole.
10. The detachable system according to claim 1, The holder has a support plate that supports the medical device and a pivoting arm that is arranged below the support plate and rotates around an axis in the width direction, and the pivoting arm has an expansion portion that expands in the width direction, in this attachment / detachment system.
11. 11. A detachable system according to claim 1, wherein the medical device has a blood pump and an oxygenator, the holder has a pump holding portion that holds the blood pump and an oxygenator holding portion that holds the oxygenator, and the pump holding portion and the oxygenator holding portion are arranged side by side in a horizontal direction.