Fat washing device and method for manufacturing a fat washing device

Abstract

The present invention provides a fat washing device and a method for manufacturing a fat washing device that can perform the washing of adipose tissue in a relatively simple manner. [Solution] The fat washing device 100 comprises a fat washing module 1, a supply pump 3 having an operating handle 31 which, when the operating handle 31 is operated, supplies the washing liquid stored in the washing liquid reservoir to the inside of the cylindrical member 10 of the fat washing module 1, an operating rod drive unit 5 having operating handles 51 and 52 which, when the operating handle 52 is operated, reciprocates the operating rod 22 in the Z-axis direction, and when the operating handle 51 is operated, rotates the operating rod 22 around the cylindrical axis along the Z-axis direction of the cylindrical member 10, and a discharge pump 4 having an operating handle 41 which, when the operating handle 41 is operated, discharges the liquid containing the washing liquid present inside the cylindrical member 10 to the outside of the cylindrical member 10.

Description

Technical Field

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[0001] The present invention relates to a fat cleaning device and a method for manufacturing the fat cleaning device.

Background Art

[0002] Conventionally, a centrifuge has been widely used as a means for separating and purifying impurities from adipose tissue collected from a patient. In this case, in order to reduce the risk of infection in the patient, it is required to keep the container storing the adipose tissue clean. On the other hand, there is proposed a centrifugation device including an inner container having a cylindrical body for storing a solution and a plug for sealing the cylindrical body, for storing the solution in a sealed state, a support for detachably storing a lower part of the inner container, and a take-out part for exposing an upper part of the inner container to enable detachment of the inner container, and an outer container for storing the inner container in a sealed state, and capable of maintaining the inner container in a clean state (see, for example, Patent Document 1). When separating impurities from adipose tissue and purifying the adipose tissue using this centrifugation device and a centrifuge, in addition to the doctor who operates on the patient, an assistant who handles the centrifuge is required. This assistant holds the outer container containing the inner container storing the adipose tissue, sets it in the centrifuge, separates impurities from the adipose tissue by the centrifuge, and then holds the support of the outer container to make the inner container in a state where it can be taken out from the take-out part and let the doctor take out the inner container. Thereby, it is possible to avoid a situation where the doctor has to contact a centrifuge that is difficult to maintain a clean state during surgery, and reduce the risk of infection in the patient.

Prior Art Documents

Patent Documents

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Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when separating impurities from adipose tissue and purifying the adipose tissue using the centrifugal separation device and centrifuge described in Patent Document 1, as mentioned above, it is necessary to secure an assistant in addition to the physician, and the physician will need to work in cooperation with the assistant to remove the inner container from the support of the outer container held by the assistant, which may complicate the work that needs to be done during surgery.

[0005] This invention has been made in view of the above-mentioned reasons, and aims to provide a fat washing device and a method for manufacturing a fat washing device that can perform the washing of adipose tissue in a relatively simple manner. [Means for solving the problem]

[0006] To achieve the above objective, the fat washing apparatus according to the present invention is A cylindrical member comprising: a first cylindrical portion having a bottom and a through hole formed in the bottom wall; a second cylindrical portion having a cylindrical shape, the area of ​​the cross-section perpendicular to the cylindrical axis direction being smaller than the area of ​​the cross-section perpendicular to the cylindrical axis direction of the first cylindrical portion, and being continuous with the other end of the first cylindrical portion opposite to the end on the bottom wall side of the first cylindrical portion in the cylindrical axis direction, and having an inlet on the inside for introducing a cleaning solution for cleaning fatty tissue; and a third cylindrical portion having a cylindrical shape, the other end of the second cylindrical portion opposite to the end on the first cylindrical portion side in the cylindrical axis direction, and having an outlet for discharging the liquid containing the cleaning solution present on the inside to the outside; and the cylindrical member A fat washing module for washing adipose tissue comprises: a filter member that is movable in the axial direction within the second cylindrical portion, having a size and shape such that when positioned inside the second cylindrical portion, its peripheral portion abuts against the inner wall of the second cylindrical portion, and when positioned inside the first cylindrical portion, a gap is formed between the peripheral portion and the inner wall of the first cylindrical portion, and when positioned inside the second cylindrical portion, it is positioned in a manner that divides the inside of the cylindrical member into two adjacent regions in the axial direction; and an operating rod that is elongated, with the filter member fixed to one end in the longitudinal direction, and the other end positioned outside the cylindrical member when inserted through the through hole; A supply pump having a first operating handle operated by the user, connected to the inlet and the cleaning fluid storage section that stores the cleaning fluid, and which, when the first operating handle is operated, supplies the cleaning fluid stored in the cleaning fluid storage section to the inside of the cylindrical member through the inlet, An operating rod drive unit having a second operating handle and a third operating handle operated by the user, wherein when the second operating handle is operated, the operating rod is moved back and forth in a direction along the cylindrical axis of the cylindrical member, and when the third operating handle is operated, the operating rod is rotated around the cylindrical axis of the cylindrical member, The device includes a discharge pump having a fourth operating handle operated by the user, which is connected to the discharge port, and which, when the fourth operating handle is operated, discharges the liquid present inside the cylindrical member to the outside of the cylindrical member through the discharge port.

[0007] From another perspective, the method for manufacturing the fat washing apparatus according to the present invention is: A method for manufacturing a fat washing apparatus comprising a fat washing module for washing adipose tissue and a device body for detachably holding the fat washing module, An assembly step of assembling the fat washing device by holding at least the fat washing module in the main body of the device, After the assembly process, a sterilization process is performed to sterilize the entire assembled fat washing device. The process includes a packaging step of packaging the fat washing device in a sterilized bag after the sterilization step. [Effects of the Invention]

[0008] According to the present invention, after introducing adipose tissue into the cylindrical member of the fat washing module, the first operating handle is operated to supply washing solution to the inside of the cylindrical member, and then the adipose tissue can be washed by operating the second and third operating handles. Subsequently, by operating the fourth operating handle, the liquid containing the washing solution present inside the cylindrical member is discharged to the outside of the cylindrical member, thereby removing the adipose tissue from the inside of the cylindrical member. As a result, a user can wash adipose tissue by themselves using the fat washing device, making the adipose tissue washing process relatively easy. Furthermore, according to the present invention, the entire assembled fat washing device is sterilized in the sterilization process. As a result, a user can wash adipose tissue by themselves using the sterilized fat washing device, thus reducing the number of people required for the adipose tissue washing process. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic perspective view of a fat washing device according to an embodiment of the present invention. [Figure 2] This is a schematic perspective view of a fat washing module according to an embodiment. [Figure 3] This flowchart shows an example of the flow of a fat washing method using the fat washing device according to the embodiment. [Figure 4] The diagram shows a schematic representation of a fat washing module according to an embodiment, where (A) shows the process of introducing adipose tissue into the inside of a cylindrical member, and (B) shows the process of discharging liquid containing impurities from the inside of the cylindrical member. [Figure 5] The diagram shows a schematic representation of a fat washing module according to an embodiment. (A) shows the process of washing adipose tissue by stirring a mixture of adipose tissue and physiological saline solution, and (B) shows the filter member moved to the bottom wall side of the first cylindrical part of the cylindrical member. [Figure 6]The diagram shows a schematic representation of a fat washing module according to an embodiment. (A) shows how the adipose tissue is moved toward the third cylindrical part by rotating the filter member, and (B) shows how the adipose tissue is guided to the outer circumference of the filter member by the blade when the filter member is rotated. [Figure 7] This is a schematic diagram showing how the fatty tissue accumulated inside the third cylindrical part of the fat washing module according to the embodiment is collected using a syringe. [Figure 8] This figure shows an example of a method for providing the fat washing device according to the embodiment to a user. [Figure 9] This figure shows an example of a method for providing the fat washing device according to the embodiment to a user. [Modes for carrying out the invention]

[0010] The fat washing device according to this embodiment will be described below with reference to the drawings. The fat washing device according to this embodiment comprises a fat washing module, a supply pump, an operating rod drive unit, and a discharge pump. The fat washing module is a fat washing module for washing adipose tissue, and comprises a first cylindrical part which is bottomed and has a through hole formed in the bottom wall, a second cylindrical part which is cylindrical and has a cross-sectional area perpendicular to the cylindrical axis direction which is smaller than the cross-sectional area perpendicular to the cylindrical axis direction of the first cylindrical part, and is continuous with the other end of the first cylindrical part opposite to the bottom wall side of the first cylindrical part in the cylindrical axis direction, and has an inlet on the inside for introducing a washing liquid for washing adipose tissue, and a second cylindrical part which is cylindrical and is continuous with the other end of the second cylindrical part opposite to the end of the first cylindrical part in the cylindrical axis direction, and discharges liquid containing the washing liquid present inside to the outside The supply pump has a third cylindrical portion having a discharge port for a cleaning solution, a filter member that is movable in the axial direction inside the cylindrical member, has a size and shape such that when positioned inside the second cylindrical portion its circumference abuts against the inner wall of the second cylindrical portion, and when positioned inside the first cylindrical portion a gap is formed between its circumference and the inner wall of the first cylindrical portion, and when positioned inside the second cylindrical portion it is positioned in a manner that divides the inside of the cylindrical member into two adjacent regions in the axial direction, and an elongated operating rod to which the filter member is fixed in the longitudinal direction, and which is inserted through a through hole with the other end positioned outside the cylindrical member. The supply pump has a first operating handle operated by the user, is connected to the inlet of the cylindrical member and a cleaning solution storage portion that stores cleaning solution, and when the first operating handle is operated it supplies the cleaning solution stored in the cleaning solution storage portion to the inside of the cylindrical member through the inlet. The operating rod drive unit has a second operating handle and a third operating handle operated by the user. When the second operating handle is operated, the operating rod is moved back and forth in a direction along the cylindrical axis of the cylindrical member, and when the third operating handle is operated, the operating rod is rotated around the cylindrical axis of the cylindrical member. The discharge pump has a fourth operating handle operated by the user and is connected to the discharge port of the cylindrical member. When the fourth operating handle is operated, the liquid containing the cleaning solution present inside the cylindrical member is discharged to the cylindrical member through the discharge port.

[0011] As shown in Figure 1, the fat cleansing device 100 according to this embodiment comprises a fat cleansing module 1, a supply pump 3, an operating rod drive unit 5, a discharge pump 4, and a syringe 90. The fat cleansing device 100 further comprises a device body 8 that houses the supply pump 3, the operating rod drive unit 5, and the discharge pump 4, and detachably holds the fat cleansing module 1 and the syringe 90. The device body 8 is box-shaped and has a roughly rectangular box-shaped main part 81, a protruding part 82 that protrudes forward, i.e., in the +X direction, from the +Z direction end on the +Y direction side of the center of the main part 81 in the Y-axis direction, and a base part 83 that protrudes in the +X direction from the -Z direction end on the +Y direction side of the center of the main part 81 in the Y-axis direction, and on the +Z direction side on which the fat cleansing module 1 is placed. The operating rod drive unit 5 is arranged in the area inside the protruding part 82 and in the area inside the main part 81 that faces the protruding part 82 in the X direction. Furthermore, a clamping portion 84 for holding the fat washing module 1 is provided between the protruding portion 82 and the base portion 83, located on the +Y direction side of the central part of the main portion 81 in the Y-axis direction. In addition, a syringe holding portion 85 for holding the syringe 90 is provided at the +X direction end of the base portion 83. On the -Z direction side of the protruding portion 82, an inclined surface 82a is formed such that the amount of protrusion in the +X direction gradually decreases as it approaches the -Z direction, and a through hole 82b communicating with the inside of the device body 8 is provided in a part of the inclined surface 82a. Also, on the -Y direction side of the main portion 81 of the device body 8, two slots 81a and 81b are provided, into which the supply pump 3 and discharge pump 4 are fitted, respectively. Note that the configuration shown in Figure 1 is an example assuming the user is right-handed. If the user is left-handed, it is preferable that the supply pump 3 and discharge pump 4 are arranged in the opposite direction to that shown in Figure 1 in the Y-axis direction. Therefore, it is preferable that the two slots 81a and 81b are located on the +Y direction side of the main part 81 of the device body 8.

[0012] The fat washing module 1 is for washing adipose tissue and, as shown in Figure 2, comprises a bottomed cylindrical member 10, a filter member 21, and an operating rod 22. The cylindrical member 10 is formed from, for example, resin and has a first cylindrical portion 11, a second cylindrical portion 12, a third cylindrical portion 13, and connecting portions 14 and 15. The first cylindrical portion 11 is bottomed and has a circular through-hole 11b in its bottom wall 11a. A hopper 111 is provided in the first cylindrical portion 11, communicating with the inside of the cylindrical member 10 from its side wall for introducing adipose tissue. A lid 113 is attached to the opening of the hopper 111 on the side opposite to the first cylindrical portion 11, and can be positioned to either close or open the opening. Furthermore, the bottom wall 11a on the inside of the first cylindrical portion 11 is provided with a blade 25 that guides fatty tissue attached to the +Z side of the filter member 21 into the gap between the periphery of the filter member 21 and the inner wall of the cylindrical portion 10 when the filter member 21 is rotated while in contact with the inside of the first cylindrical portion 11. The blade 25 is used when fatty tissue is attached to the filter member 21, but the fatty tissue placed on the +Z side of the filter member 21 can also be moved into the gap between the periphery of the filter member 21 and the inner wall of the cylindrical portion 10 simply by rotating the filter member 21.

[0013] The second cylindrical portion 12 is cylindrical in shape, and the area of ​​the cross-section perpendicular to the cylindrical axis J1 direction is smaller than the area of ​​the cross-section perpendicular to the cylindrical axis direction of the first cylindrical portion 11; that is, its inner diameter is smaller than the inner diameter of the first cylindrical portion 11. Furthermore, the second cylindrical portion 12 is continuous with the first cylindrical portion 11 via a connecting portion 14 at the end opposite to the end on the bottom wall 11a side of the first cylindrical portion 11 in the cylindrical axis J1 direction, i.e., at the end on the -Z direction side. The connecting portion 14 is cylindrical in shape, continuous with the first cylindrical portion 11 at the end on the +Z direction side and continuous with the second cylindrical portion 12 at the end on the -Z direction side, and has a shape that expands in diameter toward the +Z direction. In addition, the second cylindrical portion 12 has an inlet 121 on its inside for introducing a washing solution for purifying adipose tissue.

[0014] The third cylindrical portion 13 is a bottomed cylindrical shape and has an inner diameter smaller than that of the second cylindrical portion 12. Also, the third cylindrical portion 13 is continuously connected via a connecting portion 15 to the other end of the second cylindrical portion 12 on the side opposite to the one end on the first cylindrical portion 11 side in the cylinder axis J1 direction of the second cylindrical portion 12, that is, the end portion on the -Z direction side. The connecting portion 15 is cylindrical, continuous with the second cylindrical portion 12 at the end portion on the +Z direction side and continuous with the third cylindrical portion 13 at the end portion on the -Z direction side, and has a shape that expands in diameter toward the +Z direction. Further, the third cylindrical portion 13 has a discharge port 131 provided in its bottom wall 13a for discharging the liquid existing inside to the outside, and a recovery port 132 provided in its side wall 13b for taking out the adipose tissue existing inside. A drain cock 133 is provided at the discharge port 131, and a recovery port opening / closing valve 134 is provided at the recovery port 132.

[0015] The filter member 21 is disk-shaped, movable in the cylinder axis direction inside the cylindrical member 10, and in a state of being arranged inside the second cylindrical portion 12, its peripheral portion abuts against the inner wall of the second cylindrical portion 12, and in a state of being arranged inside the first cylindrical portion 11, it has a size such that a gap is formed between its peripheral portion and the inner wall of the first cylindrical portion 11. The filter member 21 is arranged in a posture that divides the inside of the cylindrical member 10 into two adjacent regions in the cylinder axis J1 direction in a state of being arranged inside the second cylindrical portion 12. The operation rod 22 is long, with the filter member 21 fixed to one end portion in the longitudinal direction, and the other end portion is arranged outside the cylindrical member 10 in a state of being inserted through a through hole 11b provided in the bottom wall 11a of the first cylindrical portion 11 of the cylindrical member 10. Also, on the side of the filter member 21 opposite to the side where the operation rod 22 is fixed, a pressing portion 24 is provided that protrudes toward the -Z direction and presses the adipose tissue existing on the -Z direction side of the filter member 21 toward the third cylindrical portion 13 side.

[0016] Returning to FIG. 1, the supply pump 3 has an operation handle 31 operated by the user, and is connected to the inlet 121 of the cylindrical member 10 of the fat cleaning module 1 and a cleaning liquid storage section (not shown) for storing the cleaning liquid. As the cleaning liquid, for example, physiological saline can be adopted. Further, examples of the cleaning liquid storage section include a bag or the like containing the cleaning liquid. When the operation handle 31 is operated, the supply pump 3 supplies the cleaning liquid stored in the cleaning liquid storage section to the inside of the cylindrical member through the inlet. The supply pump 3 is fitted into the slot 81a of the main part 81 of the apparatus main body 8 in a posture where the operation handle 31 is disposed on the -Y direction side.

[0017] The operation rod drive unit 5 has operation handles 51 and 52 operated by the user, and a shaft 53 which is long and is arranged such that the central axis along the longitudinal direction is coaxial with the cylinder axis J1 of the cylindrical member 10 of the fat cleaning module 1, and the end on the -Z direction side is connected to the operation rod 22 via a coupling member 54. The operation handle 51 is disposed outside the upper wall on the +Z direction side of the main part 81 of the apparatus main body 8, and the operation handle 52 is disposed outside the side wall on the -Y direction side of the main part 81 of the apparatus main body 8. Further, the operation rod drive unit 5 has a reciprocating drive mechanism (not shown) that reciprocates the shaft 53 in a direction along the cylinder axis J1 direction of the cylindrical member 10 when the operation handle 52 is operated, and a rotation drive mechanism (not shown) that rotates the operation rod around the cylinder axis J1 of the cylindrical member 10 when the operation handle 51 is operated. Thereby, when the operation handle 52 is operated, the operation rod 22 of the fat cleaning module 1 reciprocates in a direction along the cylinder axis J1 direction of the cylindrical member 10, and when the operation handle 51 is operated, the operation rod 22 rotates around the cylinder axis J1 of the cylindrical member 10.

[0018] The discharge pump 4 has an operating handle 41 that is operated by the user and is connected to the outlet 131 of the cylindrical member 10 of the fat washing module 1 and to a drainage recovery unit (not shown). The drainage recovery unit could be, for example, a bag that temporarily stores liquid containing washing solution. When the operating handle 41 is operated, the discharge pump 4 discharges the liquid containing washing solution present inside the cylindrical member 10 to the outside of the cylindrical member 10 through the outlet 131 of the cylindrical member 10. The discharge pump 4 is fitted into the slot 81b of the main part 81 of the device body 8 with the operating handle 41 positioned on the -Y direction side.

[0019] The syringe 90 comprises a long, cylindrical syringe body 901, a plunger 902 that is movable inside the syringe body 901 in the axial direction of the syringe body 901, and an operating member 903 connected to the plunger 902 (see, for example, Figure 4(A)). The tip of the syringe body 901 is connected to the collection port 132 of the fat washing module 1 via a tube (not shown).

[0020] As described above, a major feature of the fat washing device 100 according to this embodiment is that all the operating functions necessary for washing adipose tissue are housed together in a single device body 8.

[0021] Next, the method of using the fat washing device 100 according to this embodiment will be described with reference to Figures 3 to 7. As shown in Figure 3, first, adipose tissue is placed into the cylindrical member 10 of the fat washing module 1 (step S101). Here, as shown in Figure 4(A), the lid 113 attached to the hopper 111 provided on the cylindrical member 10 is opened, and as shown by arrow AR21, the adipose tissue FA is placed into the region A2 on the +Z side of the filter member 21 inside the cylindrical member 10. Once the placement of the adipose tissue FA is complete, the lid 113 is closed. At this time, the blood or tumescent fluid contained in the adipose tissue FA present on the +Z side of the filter member 21, i.e., a solution of physiological saline with adrenaline added, is filtered by the filter member 21 and flows out to the -Z side of the filter member 21, as shown by arrow AR23. In this way, as shown in Figure 3, impurities contained in the adipose tissue FA are filtered by the filter member 21 (step S102).

[0022] Next, the liquid containing impurities that has accumulated on the -Z side inside the cylindrical member 10 is discharged to the outside of the cylindrical member 10 (step S103). Here, the drain cock 133 shown in Figure 2 is opened, and then the operating handle 41 of the discharge pump 4 shown in Figure 1 is operated. As a result, as shown by arrow AR26 in Figure 4(B), the liquid containing impurities inside the cylindrical member 10 is drawn into the discharge pump 4 through the outlet 131 and discharged to the outside of the cylindrical member 10. After the liquid inside the cylindrical member 10 has been discharged, the drain cock 133 is closed again.

[0023] Returning to Figure 3, the next step is to supply cleaning solution to the inside of the cylindrical member 10 (step S104). Here, the operating handle 31 of the supply pump 3 shown in Figure 1 is operated. As a result, as shown in Figure 5(A), cleaning solution is supplied from the supply pump 3 to the inside of the cylindrical member 10 through the inlet 121 of the cylindrical member 10. After that, the adipose tissue FA is washed and impurities are filtered out (step S105). Here, the operating handles 52 of the operating rod drive unit 5 shown in Figure 1 are operated. As a result, as shown by arrow AR29 in Figure 5(A), the filter member 21 is raised and lowered in the Z-axis direction in the area A1 inside the second cylindrical part 12 to wash the adipose tissue FA and filter out impurities. Here, when the filter member 21 rises, a pressure difference is created on both sides of the filter member 21 in the Z-axis direction, and pressure is applied to the adipose tissue FA on the +Z direction side of the filter member 21. This pressure is used to release impurities contained in the adipose tissue FA into the cleaning solution Li.

[0024] Returning to Figure 3, the liquid containing impurities that has accumulated on the -Z side inside the cylindrical member 10 is then discharged to the outside of the cylindrical member 10 (step S106). Here, as described above, the drain cock 133 is opened, and then the operating handle 41 of the discharge pump 4 is operated. As a result, the liquid containing impurities inside the cylindrical member 10 is drawn into the discharge pump 4 through the outlet 131 and stored in the aforementioned drainage recovery section. After the liquid inside the cylindrical member 10 has been discharged, the drain cock 133 is closed again.

[0025] Next, the user determines whether the washing of the adipose tissue FA is complete based on the state of the liquid stored in the drainage recovery section (step S107). Here, the user may, for example, determine whether or not blood remains in the liquid by the color of the liquid. If the user determines that the washing of the adipose tissue FA is not yet complete and requires further washing (step S107: No), the user repeats the process from steps S104 to S106.

[0026] On the other hand, suppose the user determines that the cleaning of the adipose tissue FA is complete (Step S107: Yes). In this case, the adipose tissue FA present inside the cylindrical member 10 is recovered (Step S108). Here, as shown by arrow AR30 in Figure 5(B), the filter member 21 is moved to the area A2 inside the first cylindrical part 11 by operating the operating handle 52 of the operating rod drive unit 5. At this time, a gap is created between the periphery of the filter member 21 and the inner wall of the first cylindrical part 11, and the filter member 21 comes into close proximity to the -Z side end of the blade 41 provided on the bottom wall 11a of the first cylindrical part 11. Next, as shown by arrow AR31 in Figure 6(A), the filter member 21 is rotated by operating the operating handle 51 of the operating rod drive unit 5 shown in Figure 1, causing the adipose tissue FA present on the +Z side of the filter member 21 to fall through the gap between the periphery of the filter member 21 and the inner wall of the first cylindrical portion 11 to the -Z side of the filter member 21, as shown by arrow AR32. Here, if the inner wall of the first cylindrical portion 11 is polished or coated to improve lubrication, the adipose tissue FA can fall smoothly. Alternatively, the filter member 12 may be mechanically vibrated to promote the fall of the adipose tissue FA from the filter member 21. Furthermore, as shown in Figure 6(B), the blade 25 has a curved shape and guides the adipose tissue FA present on the +Z side of the filter member 21 into the gap between the periphery of the filter member 21 and the inner wall of the first cylindrical portion 11, as shown by arrow AR33. This causes the adipose tissue FA present on the +Z side of the filter member 21 to accumulate inside the third cylindrical portion 13. Then, after opening the recovery port opening / closing valve 134 shown in Figure 2, the operating handle 52 of the operating rod drive unit 5 shown in Figure 1 is operated to lower the filter member 21 in the -Z direction as shown by arrow AR34 in Figure 7, bringing the pressing part 24 into contact with the adipose tissue FA, and then pressing the adipose tissue FA with the pressing part 24. In this state, the plunger 902 of the syringe 90 is moved in the direction of pulling it out from the syringe body 901, thereby recovering the adipose tissue FA into the syringe body 901 as shown by arrow AR35.

[0027] Next, a method for providing the fat cleansing device 100 according to this embodiment to a user will be described with reference to Figure 8. As shown in Figure 1, the fat cleansing device 100 according to this embodiment can be divided into a fat cleansing module 1, a main unit 101 having a device body 8, a supply pump 3, a discharge pump 4, and an operating rod drive unit 5, and accessories 102 including a syringe 90, a syringe 90 and the fat cleansing module 1, the supply pump 3 and the fat cleansing module 1, and the discharge pump 4 and the fat cleansing module 1 (not shown). First, the supplier of the fat cleansing device 100 performs an assembly process in which the fat cleansing device 100 is assembled using the fat cleansing module 1, the main unit 101, and the accessories 102. Next, the supplier performs a sterilization process in which the assembled fat cleansing device 100 is sterilized, and then performs a packaging process in which it is packaged in a so-called sterile bag. Finally, the supplier provides the fat cleansing device 100, packaged in a sterile bag B1, to the user. After the user has used the fat cleansing device 100, a disassembly process is performed in which the fat cleansing module 1 and accessories 102 are removed from the used fat cleansing device 100 and the fat cleansing module 1 and accessories 102 are discarded. The supplier then collects only the used main unit 101 from the user. Next, the supplier determines whether the number of uses of the main unit 101 is less than a predetermined standard number. If the supplier determines that the number of uses is equal to or greater than the standard number, the main unit 101 is discarded. On the other hand, if the supplier determines that the number of uses is less than the standard number, a cleaning process is performed to clean the main unit 101. The supplier then performs an assembly process in which the fat cleansing device 100 is assembled using the cleaned main unit 101 and new fat cleansing module 1 and accessories 102, and then provides it to the user in the same manner as described above.

[0028] With this method, users can immediately use the fat washing device 100 without having to perform any settings after opening the sterile bag containing the device, for example, in an operating room. Furthermore, since the entire fat washing device 100 is sterilized, a user who maintains a clean environment can use the fat washing device 100 alone. Another major advantage of this method is that the main unit 101 can be used multiple times, and users who do not possess a dedicated sterilization device for sterilizing the fat washing device 100 can also use the fat washing device 100 safely.

[0029] Furthermore, another method of providing the fat cleansing device 100 according to this embodiment to a user will be described with reference to Figure 9. This method assumes that the user possesses the main unit 101 of the fat cleansing device 100 and also possesses equipment for cleaning and sterilizing the main unit 101. The supplier sterilizes the fat cleansing module 1 and the accessories 102, and then packages them separately in sterile bags. Next, the supplier provides the fat cleansing module 1 and accessories 102, packaged in sterile bags, to the user. Meanwhile, the user performs an assembly process to assemble the fat cleansing device 100 using the provided fat cleansing module 1 and accessories 102 and the main unit 101 that they possess. After using the fat cleansing device 100, the user performs a disassembly process to remove the fat cleansing module 1 and accessories 102 from the used fat cleansing device 100 and disassemble it, and then discards the fat cleansing module 1 and accessories 102. Finally, the user determines whether the number of times the main unit 101 has been used is less than the aforementioned standard number of uses. Here, if the user determines that the number of uses exceeds the standard number, they discard the main unit 101. On the other hand, if the user determines that the number of uses is less than the standard number, they perform a cleaning process to wash the main unit 101. Next, the user receives the fat washing module 1 and accessories 102 again from the supplier. Then, after performing a sterilization process to sterilize the main unit 101 after cleaning, the user performs an assembly process to assemble the fat washing device 100 using the sterilized main unit and the provided fat washing module 1 and accessories 102. This assembly process is, of course, performed by a clean user in a clean environment.

[0030] As described above, according to the fat washing module 1 of this embodiment, after introducing adipose tissue FA into the cylindrical member 10 of the fat washing module 1, the first operating handle is operated to supply washing solution to the inside of the cylindrical member 10, and then the adipose tissue FA can be washed by operating the operating handles 51 and 52. Subsequently, by operating the operating handle 41, the liquid containing the washing solution present inside the cylindrical member 10 is discharged to the outside of the cylindrical member 10, thereby allowing the adipose tissue FA inside the cylindrical member 10 to be removed. As a result, a user can wash the adipose tissue FA by themselves using the fat washing device 100, making the washing of adipose tissue FA relatively easy.

[0031] Incidentally, centrifuges have traditionally been used to clean adipose tissue in medical settings. When using a centrifuge, if the centrifugation container containing the adipose tissue collected from the patient comes into contact with the relatively unclean parts of the centrifuge, it may become very difficult to remove the adipose tissue from the centrifugation container in a clean state. Therefore, when using a centrifuge, it is common practice to remove the parts assembled into the centrifuge (for example, the rotating body that holds at least one centrifugation container containing the adipose tissue collected from the patient) from the main body of the machine, sterilize these parts, and then reassemble them into the main body of the machine. This ensures that the centrifugation container set in the centrifuge is kept clean. However, since sterilizing the main body of the centrifuge is extremely difficult, the operation of the centrifuge is usually performed by a different person than the person handling the adipose tissue. In other words, even for a simple adipose tissue cleaning operation, two people are required: a physician who exclusively collects the fat and sets the container filled with the collected fat into the centrifuge, i.e., a person who is kept clean, and a person who exclusively touches the main body of the centrifuge and operates it, i.e., a person who is not clean. Therefore, in hospitals without sterilization equipment or small hospitals with limited staff, the task of washing adipose tissue using a centrifuge may become a significant burden. It is possible to wash adipose tissue using a centrifuge by one person by implementing various measures to maintain a sterile environment, such as attaching a cover to the centrifuge. However, in this case, the operation becomes complicated, and there is a risk of contamination of the adipose tissue due to misoperation, which may lead to the use of the centrifuge being avoided. In addition, there is a risk of relying on simpler methods of washing adipose tissue, such as the so-called tea strainer method or the so-called static separation method using a syringe, which is less efficient. This static separation method requires a long time for the washing process and the washing state is unstable because it cannot be processed in a consistent process.

[0032] In contrast, in the fat washing device 100 according to this embodiment, the fat washing module 1, the supply pump 3, and the discharge pump 4 are compactly housed in a single device body 8, and no power is required to drive the supply pump 3, the discharge pump 4, and the fat washing module 1. In other words, the fat washing device 100 according to this embodiment incorporates a mechanism that can be operated entirely manually, and as a result does not use electric parts that are unsuitable for the sterilization process, and basically uses resin materials, with metal parts being incorporated as appropriate considering the shape of the parts, etc. For this reason the entire fat washing device can be sterilized. This allows a single user to wash adipose tissue using the sterilized fat washing device 100, thus reducing the number of people required for the adipose tissue washing work. Furthermore, since the user does not touch the washing module 1 into which the adipose tissue is placed, heat from the user's body is not transferred to the adipose tissue, and the washing liquid flow rotates, enabling efficient, stable, and highly accurate washing. Furthermore, the fat washing device 100 according to this embodiment can be sterilized as a whole and provided to hospitals that lack sterilization facilities, for example, thus enabling proper fat washing operations even in such hospitals.

[0033] Although embodiments of the present invention have been described above, the present invention is not limited to the configuration of the embodiments described above. For example, the third cylindrical portion 13 of the cylindrical member 10 of the fat washing module 1 may be provided with a plurality of recovery ports 132.

[0034] In the embodiment described, a drain cock 133 is provided at the discharge port 131 of the fat washing module 1, and a recovery port opening / closing valve 134 is provided at the recovery port 132. However, the embodiment is not limited to this, and the fat washing module may not be equipped with a drain cock 133 and a recovery port opening / closing valve 134.

[0035] In this embodiment, an example in which there is only one main unit 101 has been described, but the invention is not limited to this, and the main unit 101 may be supplied in a state in which it is divided into multiple main unit subunits. For example, a pump unit (not shown) having a supply pump 3 and a discharge pump 4 may be sterilized separately before being supplied, and the user may assemble the pump unit and the unit that combines the parts of the main unit 101 other than the pump unit at the medical site.

[0036] Although embodiments and variations of the present invention have been described above, the present invention is not limited thereto. The present invention includes embodiments and variations that are appropriately combined, and those that are appropriately modified thereto. [Industrial applicability]

[0037] The present invention is suitable as a fat washing device for washing adipose tissue used in adipose tissue injection and adipose tissue transplantation. [Explanation of Symbols]

[0038] 1: Fat washing module, 3: Supply pump, 4: Discharge pump, 5: Operating rod drive unit, 8: Device body, 10: Cylindrical member, 11: First cylindrical part, 11a, 13a: Bottom wall, 11b: Through hole, 12: Second cylindrical part, 13: Third cylindrical part, 13b: Side wall, 14, 15: Connection part, 21: Filter member, 22: Operating rod, 23: Disc-shaped part, 24: Pressing part, 25: Blade, 31, 41, 51, 52: Operating handle, 53: Shaft, 54: Coupling member, 81: Main part, 81a, 81b: Slot 82: protruding part, 82a: inclined surface, 82b: through hole, 83: base part, 84: clamping part, 85: syringe holder part, 90: syringe, 100: fat washing device, 101: main unit, 102: accessories, 111: hopper, 113: lid, 121: inlet, 131: outlet, 132: recovery port, 133: drain cock, 134: recovery port on / off valve, 311, 312: gas supply port on / off valve, 901: syringe body, 902: plunger, 903: operating part, FA: fatty tissue, Li: washing solution

Claims

1. A cylindrical member comprising: a first cylindrical portion having a bottom and a through hole formed in the bottom wall; a second cylindrical portion having a cylindrical shape, the area of ​​the cross-section perpendicular to the cylindrical axis direction being smaller than the area of ​​the cross-section perpendicular to the cylindrical axis direction of the first cylindrical portion, and being continuous with the other end of the first cylindrical portion opposite to the end on the bottom wall side of the first cylindrical portion in the cylindrical axis direction, and having an inlet on the inside for introducing a cleaning solution for cleaning fatty tissue; and a third cylindrical portion having a cylindrical shape, the other end of the second cylindrical portion opposite to the end on the first cylindrical portion side in the cylindrical axis direction, and having an outlet for discharging the liquid containing the cleaning solution present inside to the outside; and the cylindrical member A fat washing module for washing fatty tissue comprises: a filter member that is movable in the axial direction within the inside of the second cylindrical portion, having a size and shape such that when positioned inside the second cylindrical portion, its peripheral portion abuts against the inner wall of the second cylindrical portion, and when positioned inside the first cylindrical portion, a gap is formed between the peripheral portion and the inner wall of the first cylindrical portion, and when positioned inside the second cylindrical portion, it is positioned in a manner that divides the inside of the cylindrical member into two adjacent regions in the axial direction; and an operating rod that is elongated, with the filter member fixed to one end in the longitudinal direction, and the other end positioned outside the cylindrical member when inserted through the through hole; A supply pump having a first operating handle operated by the user, connected to the inlet and the cleaning fluid storage section that stores the cleaning fluid, and which, when the first operating handle is operated, supplies the cleaning fluid stored in the cleaning fluid storage section to the inside of the cylindrical member through the inlet, An operating rod drive unit having a second operating handle and a third operating handle operated by the user, wherein when the second operating handle is operated, the operating rod is moved back and forth in a direction along the cylindrical axis of the cylindrical member, and when the third operating handle is operated, the operating rod is rotated around the cylindrical axis of the cylindrical member, The device includes a discharge pump having a fourth operating handle operated by the user, which is connected to the discharge port, and which, when the fourth operating handle is operated, discharges the liquid present inside the cylindrical member to the outside of the cylindrical member through the discharge port. Fat washing device.

2. The apparatus further comprises a main body that houses the supply pump, the operating rod drive unit, and the discharge pump, and that detachably holds at least the fat washing module. The fat washing apparatus according to claim 1.

3. The fat washing module is The cylindrical member is continuously and integrally provided with a hopper for introducing the fatty tissue into the inside of the cylindrical member, The fat washing device according to claim 1 or 2.

4. A method for manufacturing a fat washing apparatus comprising a fat washing module for washing adipose tissue and a device body for detachably holding the fat washing module, An assembly step of assembling the fat washing device by holding at least the fat washing module in the main body of the device, After the assembly process, a sterilization process is performed to sterilize the entire assembled fat washing device. The process includes, after the sterilization step, a packaging step of packaging the fat washing device in a sterilized bag. A method for manufacturing a fat washing device.

5. A disassembly step of disassembling the used fat washing device into the fat washing module and the device body, The process further includes a cleaning step for cleaning the main body of the apparatus obtained by the disassembly step, In the assembly step, the fat washing device is assembled by holding the new fat washing module in the device body that has been washed in the washing step. A method for manufacturing a fat washing device according to claim 4.

6. A passive fat cleansing module that can only be used once, The device comprises a main body for driving the fat washing module, which can be used repeatedly, Both the fat washing module and the main body of the apparatus are capable of sterilization. By combining the fat washing module and the main body of the device, it becomes possible to wash adipose tissue. Fat washing device.

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