Suction attachment and stabilizer
By designing a C-shaped flexible channel and flexible plate, combined with a universal adapter and a pressure-down pump, the problems of viscision and debris residue in the central coronary bypass surgery are solved, and a stable attraction attachment and stabilizer are achieved. Ensures the safety of the surgery.
Patent Information
- Application Number
- CN202380023060.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-03-07
- Filing Date
- 2023-02-20
- Publication Date
- 2024-12-10
AI Technical Summary
In existing coronary artery bypass surgery, vibration caused by heart beating is difficult to suppress, and small fragments that are difficult to observe may remain after the break of the flexible channel in the shape of a donut. The horseshoe-shaped device cannot fully play the role of a stabilizer.
A C-shaped flexible channel and flexible plate are designed, with flexibility and locking parts, connected to the stabilizer through a universal adapter, forming a suction flow path to suppress heart vibration, and through the tube part and The pressure-down pump combines to form a confined space to avoid debris residue.
It effectively suppresses vibration caused by heartbeat, avoids the problem of debris residue after the flexible channel is broken, provides a stable suction attachment and stabilizer, ensuring the safety of the surgery.
Smart Images
Figure CN119110710A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a suction accessory and a stabilizer, in particular to a suction accessory and a stabilizer used in coronary artery bypass surgery of humans and animals. Background Art
[0002] Patent document 1 discloses a hemostatic device for a vascular anastomosis used in a coronary artery bypass surgery, which is a suction cup body having a flexible channel that surrounds the coronary artery and can be adsorbed on the heart wall, characterized in that a treatment opening is provided in the central portion for exposing the anastomotic position of the coronary artery for treatment, and an exhaust pipe for exhausting air to the outside is connected to the flexible channel. It is also disclosed that the flexible channel, as claimed in claim 2 and Figure 2 The donut shape is shown, as in claim 3 and Figure 4 Shown is a horseshoe shape.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent No. 3036686 Summary of the invention
[0006] Technical problem to be solved by the invention
[0007] However, in the hemostasis holding device disclosed in Patent Document 1, when the flexible channel is in a donut shape, the graft blood vessel is anastomosed to the heart surface in the processing opening located in the center, so the flexible channel will surround the graft blood vessel. Therefore, it is necessary to perform a process of breaking the flexible channel, create a space for the graft blood vessel to pass through, and remove the flexible channel (see paragraph
[0030] of Patent Document 1).
[0008] However, if the flexible channel is broken, there is a possibility that small fragments of the flexible channel that are difficult to observe with the naked eye will be generated. If these fragments remain around the heart, there is a problem that the heart may be damaged after the operation.
[0009] On the other hand, the hemostatic holding device described in Patent Document 1 does not require breaking treatment when the flexible channel is in the shape of a horseshoe. However, the vibration of the heart surface caused by the beating of the heart during the operation will be transmitted to the treatment opening through the relatively large open part of the horseshoe shape, and the function of the stabilizer cannot be fully exerted.
[0010] Therefore, the technical problem to be solved by the present invention is to provide a suction attachment and a stabilizer having the suction attachment that can fully suppress the vibration of the contact portion of the suction attachment caused by the beating of the heart during surgery and can avoid the problem of breakage after surgery.
[0011] Solutions to technical problems
[0012] The present invention, in order to solve the above technical problems, provides a suction attachment mounted on a stabilizer, which suppresses the vibration of the heart surface of a patient undergoing coronary artery bypass surgery.
[0013] The device has a flexible channel, and when in contact with the heart surface, the flexible channel and the heart surface form a suction flow path,
[0014] The flexible channel has a C-shaped tunnel shape that serves as a passage for the transplanted blood vessel.
[0015] In addition, a C-shaped flexible plate is provided to support the shape of the flexible channel, and a gap between one end and the other end of the flexible channel corresponds to the position of a gap between one end and the other end of the flexible plate.
[0016] In addition, the width of the gap between one end and the other end of the flexible channel can be deformed as the flexible channel is deformed.
[0017] In addition, the flexible channel can also have a plurality of stop portions at its outer upper corners.
[0018] The suction flow channel may further include an inner inclined portion having a relatively thicker cross-sectional linear shape and an outer inclined portion having a relatively thinner cross-sectional curved shape.
[0019] The flexible channel may have a suction port connected to the suction flow path.
[0020] In addition, in the stabilizer of the present invention, the above-mentioned suction attachment is connected to its main body via a universal adapter. DETAILED DESCRIPTION
[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0022] Figure 1 It is a perspective view showing a schematic appearance of a stabilizer 100 according to an embodiment of the present invention. Figure 2 (a) Yes Figure 1 A top view of the stabilizer 100 is shown. Figure 2 (b) Yes Figure 2 (a) is a cross-sectional view of the stabilizer 100 taken along the line AA. Figure 2 (c) Yes Figure 2(a) is a left side view of the stabilizer 100 shown. Figure 2 (d) Yes Figure 2 (a) is a right side view of the stabilizer 100 shown.
[0023] Figure 1 as well as Figure 2 (a)~ Figure 2 The stabilizer 100 shown in (d) suppresses vibrations on the surface of the heart of a patient undergoing coronary artery bypass grafting. Figure 1 as well as Figure 2 (a)~ Figure 2 (d) shows the gripping portion 10 , the main body portion 20 , the arm portion 30 , the tube portion 40 , and the suction attachment 50 as described below.
[0024] The clamping part 10 is used to fix the stabilizer 100 to other surgical instruments, including a thoracotomy, not shown, near the operating table. The clamping part 10 can be fixed in any shape and structure as long as it does not interfere with the operation. The clamping part 10 can be made of stainless steel, aluminum, titanium, resin, etc., as commonly used in medical instruments.
[0025] The main body 20, such as Figure 1 As shown, it is connected to the clamping portion 10 and the arm portion 30. The main body 20, as shown Figure 2 As shown in (b), it comprises: a holding portion 21 for an operator such as a doctor to hold, an operating portion 22 for fixing the arm portion 30 in a state of being deformed into a specified shape, a spring component 23 screwed to the operating portion 22, and a metal wire 24 that passes through the tube of the arm portion 30 and has one end fixed to the suction attachment 50 side and the other end fixed to the spring component 23.
[0026] As for the parts of the main body 20 , as generally used in medical instruments, the grip 21 , the manipulation part 22 , and the spring member 23 may be made of, for example, resin, and the wire 24 may be made of, for example, stainless steel.
[0027] The arm 30, such as Figure 1 As shown, one end is connected to the main body 20, and the other end is connected to the suction attachment 50. The arm 30 is flexible and can be deformed appropriately. The flexibility of the arm 30 needs to have a hardness that can maintain the deformed shape as long as no external force is applied. The arm 30 can be made of stainless steel, aluminum, titanium, etc., as commonly used in medical instruments.
[0028] Tube 40, such as Figure 2 As shown in (a), one end is connected to the suction attachment 50, and the other end is connected to a pressure reducing pump (not shown). The tube 40 is also flexible. The tube 40 can be made of vinyl chloride or the like as is commonly used in medical instruments.
[0029] The suction attachment 50 is connected to the arm portion 30 via a universal adapter, and is also connected to the tube portion 40. The suction attachment 50 is characterized in that it is substantially C-shaped, flexible, and deformable.
[0030] The suction attachment 50 may be sterilized for reuse, or may be disposable and replaced for each patient.
[0031] Figure 3 (a) Yes Figure 1 A stereoscopic photograph of the attraction attachment 50 shown in FIG. Figure 3 (b) Yes Figure 3 (a) is a CAD top view of the suction attachment 50 shown. Figure 3 (c) Yes Figure 3 (a) is a CAD front view of the suction attachment 50 shown. Figure 3 (d) Yes Figure 3 (a) is a CAD right side view of the suction attachment 50 shown.
[0032] Figure 4 (a) Yes Figure 3 (a) is a top view of the flexible channel 60 shown. Figure 4 (b) Yes Figure 4 (a) is a front view of the flexible channel 60 shown. Figure 4 (c) Yes Figure 4 (a) is a cross-sectional view of the flexible channel 60 taken along the line CC. Figure 4 (d) Yes Figure 4 (a) is a DD cross-sectional view of the flexible channel 60 shown.
[0033] Attracting attachment 50, such as Figure 3 As shown in (a) and the like, it can be roughly divided into: a flexible channel 60 that contacts the surface of the patient's heart, and a flexible plate 70 that supports the shape of the flexible channel 60.
[0034] First, the flexible channel 60 is described. The flexible channel 60 is a part that contacts the heart surface of a patient undergoing coronary artery bypass surgery. The flexible channel 60 can be made of, for example, silicone, polyurethane, vinyl chloride, or polycarbonate. One or both of the inner surface and the outer surface of the flexible channel 60 can be appropriately textured.
[0035] The flexible channel 60 can obtain the following advantages through texturing processing, etc.: since the inner surface is made rough, an anti-slip effect can be obtained on the contact surface with the heart surface. In addition, since the outer surface is made rough, the operability when removing it from the mold during manufacturing is improved.
[0036] The hardness of the flexible channel 60 may vary depending on its size, especially thickness, etc., but may be, for example, about 50 to 90. Figure 3 (b) and Figure 4 As shown in (a) and the like, the general shape is C-shaped.
[0037] The dimensions of the flexible channel 60 are not limited thereto, but for example, the length corresponding to the outer diameter can be set to about 4.0 cm to 4.5 cm, the length corresponding to the inner diameter can be set to about 1.5 cm to 2.0 cm, and the height can be set to about 0.8 cm to 1.2 cm, for example.
[0038] In addition, since the flexible channel 60 is roughly C-shaped, there is a gap between the one end 62A and the other end 62B thereof. In the present embodiment, the gap can be used as a passage for a transplanted blood vessel anastomosed with a coronary artery.
[0039] In other words, the C-shape of the flexible channel 60 is different from a donut shape because it provides a passage for the transplanted blood vessel that matches the heart surface, and is also different from a horseshoe shape because it does not have a relatively large open portion.
[0040] Therefore, the width of the gap (the distance between one end 62A and the other end 62B) is not limited thereto, but can be set to about 0.15 cm to 0.40 cm, for example, considering that the thickness of a common transplanted blood vessel is 0.1 cm to 0.25 cm. Therefore, the flexible channel 60 has only a relatively small open portion.
[0041] The width of the gap is approximately 3% to 10% of the average circumference of the outer and inner circumferences of the flexible channel 60. This can be easily deduced based on the median length corresponding to the outer diameter being 1.75 cm and the median length corresponding to the inner diameter being 1.0 cm.
[0042] That is, when the flexible channel 60 is regarded as a donut shape, the average value of the outer diameter and the inner diameter is 1.375 cm, and the average circumference of the outer and inner circumferences obtained by multiplying it by the pi is about 4.32 cm. The width of the above-mentioned gap of 0.15 cm to 0.40 cm is about 3.4% to about 9.3% compared with the average circumference.
[0043] It should be noted that, looking at Patent Document 1 alone, the size of the horseshoe-shaped opening portion is not disclosed. Figure 4 The width of the horseshoe-shaped open portion is about 15% of the average circumference.
[0044] In addition, the flexible channel 60 is flexible, so the one end 62A and the other end 62B can be widened or narrowed in the plane direction or the transverse direction of the flexible channel 60. Therefore, if a thicker graft blood vessel than usual is used for surgery, the above-mentioned gap of the flexible channel 60 can be appropriately enlarged to fully ensure the passage of the graft blood vessel after anastomosis with the coronary artery.
[0045] In addition, even if a graft blood vessel thicker than the usual one is not used, the curvature of the heart surface will change depending on the position of the graft blood vessel installed. Therefore, it is sufficient to deform the flexible channel 60 in the shearing direction according to its position.
[0046] Further, the flexible channel 60, such as Figure 3 (b) and Figure 4 As shown in FIG. 1A and the like, the outer upper corner has, for example, four locking portions 64. Each locking portion 64 can be used to lock a surgical thread or the like passing through the pericardium around the heart.
[0047] Therefore, the size of the opening of each stopper 64 is not limited thereto, but is, for example, 0.10 cm to 0.80 cm. It should be noted that each stopper 64 can be simply cut off using ordinary or medical scissors when the doctor determines that it is not necessary to use it.
[0048] In addition, the flexible channel 60, such as Figure 3 (c) and Figure 4 As shown in (c) and the like, a suction flow path 61 is formed. The suction flow path 61 is a closed space formed between the flexible channel 60 and the heart surface, and its shape is a substantially C-shaped tunnel.
[0049] The flexible channel 60, such as Figure 3 (d) and Figure 4 As shown in FIG. 5( b ) and the like, a connection portion 63 is provided at the suction port 65 communicating with the suction flow path 61 . The connection portion 63 has a skirt-like shape at both the top and the base. The top is connected to the tube 40 , and the base is connected to the suction port 65 .
[0050] The flexible channel 60, when in contact with the heart surface of a patient undergoing coronary artery bypass surgery, is subjected to a pressure reduction treatment at a pressure of about 150 mmHg to 500 mmHg by the action of the tube portion 40 connected via the connecting portion 63 and a pressure reducing pump not shown, thereby exhausting the suction flow path 61.
[0051] It should be noted that the suction flow path 61 can be set as a whole as a C-shaped flow path directly connected to the suction port 65 at a 1:1 ratio, or it can be divided into N flow paths and a common flow path is set for them, and connected to the suction port 65 in parallel at an N:1 ratio through the common flow path.
[0052] In addition, the manufacturing conditions of the suction port 65 may be: Figure 4 When the center point of the flexible channel 60 in (a) is the origin, the angle formed by the axis line of the suction port 65 toward the origin and the center line passing through the gap between one end 62A and the other end 62B and toward the origin is about 10°.
[0053] Furthermore, the suction port 65, for example, adopts a two-stage structure in which the outer part as viewed from the origin has a smaller diameter, for example, about 0.3cm to 0.4cm, and the inner part has a larger diameter, about 0.4cm to 0.6cm, and the base end of the connecting part 63 is located in the larger diameter part to prevent it from falling off.
[0054] In the vicinity of the suction port 65 in the suction flow path 61, as Figure 4 As shown in FIG. 6C , a rib 66 is formed. The rib 66 prevents the patient's heart surface from being sucked in and blocking the suction port 65 due to suction through the tube 40 and the like, and prevents stress from concentrating near the suction port 65 from the tube 40 side.
[0055] Rib 66, although in Figure 4 (c) shows an example of four ribs, but the number of ribs is not limited thereto. It should be noted that in this example, each rib can have a thickness of, for example, about 0.1 cm to 0.15 cm, and a size (length toward the center of the flexible channel 60) of about 0.4 cm to 0.6 cm.
[0056] In addition, the suction flow path 61, such as Figure 4 As shown in (d), it has: a relatively thick inner inclined portion 67 with a straight cross-section, a relatively thin outer inclined portion 68 with a curved cross-section, and a main body portion 69 connecting the inner inclined portion 67 and the outer inclined portion 68.
[0057] Although not limited to the dimensions of the inner inclined portion 67, for example, its thickness is set to 0.15cm~0.25cm, and it extends at an angle of 40°~50° relative to the plane direction of the flexible channel 60, so that the thickness of the lower surface is 0.1cm~0.2cm, the length in the horizontal direction is about 0.4cm~0.6cm, and the length in the vertical direction is about 0.5cm~0.7cm.
[0058] The dimensions of the outer inclined portion 68 are not limited thereto, but its thickness can be set to about half the thickness of the inner inclined portion 67, i.e., 0.08 cm to 0.15 cm, and its thickness center can be located at a position, for example, 0.25 cm to 0.32 cm away from the outer peripheral end of the main body 69. It is then extended vertically to about half the height of the flexible channel 60, and then bent outward with a curvature radius of 0.6 cm to 0.8 cm, and the thickness of the lower surface is made to be 0.1 cm to 0.2 cm.
[0059] Regarding the suction flow path 61, as mentioned above, the general shape of the heart is spherical, so when the flexible channel 60 contacts the surface of the heart, in most cases, a closed space is formed by the inner inclined portion 67, the outer inclined portion 68 and the surface of the heart, and this closed space becomes the suction flow path 61.
[0060] Therefore, when suction is subsequently performed through the tube 40 and the like and the suction flow path 61 is exhausted, the relatively thick inner inclined portion 67 slightly deforms into an arch shape, while the relatively thin outer inclined portion 68 greatly deforms into an arch shape.
[0061] Furthermore, the heart surface portion near the suction flow path 61 is sucked toward the suction flow path 61, so that the heart surface portion in the inner area of the C shape becomes flat, and the vibration caused by the beating of the patient's heart is difficult to be transmitted to the treatment opening.
[0062] It should be noted that when the flexible channel 60 is brought into contact with the heart surface, even if a gap is formed between them and no enclosed space is formed, if the gap is narrow, the heart surface near it will be sucked over by suction and the gap will be filled. On the other hand, if the gap is large, the flexible channel 60 can be deformed to narrow the gap.
[0063] Next, the flexible plate 70 will be described. The flexible plate 70 can be made of, for example, stainless steel, aluminum, titanium, etc. The flexible plate 70 can be manufactured by cutting a stainless steel plate having a thickness of about 0.1 cm to 0.2 cm.
[0064] The flexible plate 70, such as Figure 3 (a) and Figure 3 As shown in (b), it comprises: a pair of support portions 71 having one end 72A and the other end 72B and being C-shaped as a whole; a joint portion 74 for universally connecting the attraction attachment 50 and the arm portion 30; a triangular base portion 73 connecting the support portion 71 and the joint portion 74; and a pair of opening portions 75 formed on the base portion 73.
[0065] It should be noted that the gap between one end 72A and the other end 72B of the flexible plate 70 corresponds to the position of the gap between one end 62A and the other end 62B of the flexible channel 60. Therefore, these gaps can be used as a passage for transplanted blood vessels, and the flexible channel 60 and the flexible plate 70 can be deformed in the plane direction or transverse direction.
[0066] The size of the support portion 71 is not limited thereto, but for example, the length corresponding to the outer diameter can be set to about 2.8 cm to 4.3 cm, the length corresponding to the inner diameter can be set to about 1.3 cm to 1.8 cm, and the width between one end 72A and the other end 72B can be set to about 0.4 cm to 0.6 cm.
[0067] The size of the base 73 is not limited thereto, but for example, the length ( Figure 3 (b) is set to about 1.3 cm to 1.8 cm, and the width ( Figure 3 The left and right length of (b) is set to about 2.5 cm to 3.5 cm.
[0068] The dimensions of the joint 74 are not limited thereto, but for example, the diameter of the ball portion at the top can be set to about 0.4 cm to 0.6 cm, the diameter of the cylindrical portion connected to the base 73 can be set to about 0.25 cm to 0.3 cm, and the length can be set to about 0.8 cm to 1.2 cm.
[0069] The size of the opening 75 is not limited thereto, but the diameter can be set to about 0.2 cm to 0.4 cm, for example. The opening 75 serves as an insertion port for a positioning jig for holding the flexible plate 70 when the suction attachment 50 is manufactured, and serves as an insertion port for the tip of a tweezer for holding the flexible plate 70 when the suction attachment 50 is used.
[0070] The suction attachment 50 may be manufactured by integrally molding the flexible channel 60 and the flexible plate 70 , or by making them into separate parts and installing the flexible plate 70 on the flexible channel 60 for assembly.
[0071] In this embodiment, although the stabilizer is described assuming that it is used in cardiovascular surgery on humans, it can be used in coronary artery bypass surgery not only on humans but also on animals such as dogs, cats, horses, cows, and sheep.
[0072] As described above, according to the suction attachment 50 of this embodiment, the flexible channel is not formed in a horseshoe shape and can therefore fully suppress the vibration caused by the beating of the heart during coronary artery bypass surgery, and the flexible channel is not formed in a ring shape and therefore can avoid the problem of disassembly of the transplanted blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS
[0073] Figure 1 It is a perspective view showing a schematic appearance of a stabilizer 100 according to an embodiment of the present invention.
[0074] Figure 2 yes Figure 1 The stabilizer 100 is shown in a top view, a cross-sectional view, and a side view.
[0075] Figure 3 yes Figure 1 The stereoscopic photograph, top view, front view and side view of the suction attachment 50 are shown in the figure.
[0076] Figure 4 yes Figure 3 The flexible channel 60 is shown in a top view, a front view and a cross-sectional view.
[0077] Description of Reference Numerals
[0078] 10 Clamping part
[0079] 20 Main body
[0080] 21Handling part
[0081] 22. Operation unit
[0082] 23 With spring components
[0083] 24 Metal Wire
[0084] 30 Arm
[0085] 40 pipe department
[0086] 50 Attract attachment
[0087] 60 Flexible channel
[0088] 61 Suction channel
[0089] 62A one end
[0090] 62B Other end
[0091] 63 connection part
[0092] 64 stopper
[0093] 65 suction port
[0094] 66 ribs
[0095] 67 inner inclined portion
[0096] 68 Outer inclined portion
[0097] 69 Main body
[0098] 70 Flexible Board
[0099] 71 Support Department
[0100] 72A one end
[0101] 72B Other end
[0102] 73 base
[0103] 74 Joint
[0104] 75 opening
[0105] 100 Stabilizer
Claims
1. A suction attachment mounted on a stabilizer for suppressing vibration of the heart surface of a patient undergoing coronary artery bypass surgery, A flexible channel is provided, and when in contact with the heart surface, the flexible channel and the heart surface form a suction flow path, The flexible channel has a C-shaped tunnel shape that serves as a passage for the transplanted blood vessel.
2. The suction attachment according to claim 1, wherein: A C-shaped flexible plate is provided, wherein the flexible plate supports the shape of the flexible channel. The gap between one end and the other end of the flexible channel corresponds to the position of the gap between one end and the other end of the flexible plate.
3. The suction attachment according to claim 1, wherein: The width of the gap between one end and the other end of the flexible channel can be deformed as the flexible channel is deformed.
4. The suction attachment according to claim 1, wherein: The flexible channel has a plurality of stop parts at its outer upper corner.
5. The suction attachment according to claim 1, wherein: The suction flow path has a relatively thick inner inclined portion with a straight cross section and a relatively thin outer inclined portion with a curved cross section.
6. The suction attachment according to claim 1, wherein: The flexible channel has a suction port connected to the suction flow path.
7. A stabilizer, the main body of which is connected with the suction attachment according to any one of claims 1 to 6 via a universal adapter.