Intraperitoneal fluid injection system

Abstract

Provided is an intraperitoneal fluid injection system. An intraperitoneal fluid injection system according to an embodiment of the present invention comprises: a shaft which is partially inserted into a fluid injection target; an injection nozzle which is attached to one end of the shaft while forming a certain angle with respect to a direction in which the shaft extends and comprises a nozzle tip configured to inject a fluid; and a driving unit which is configured to rotate the shaft about the longitudinal axis of the shaft as a rotational axis.

Description

Intraperitoneal fluid injection system

[0001] The present invention relates to an intraperitoneal fluid injection system.

[0002]

[0003] Hyperthermic intraperitoneal chemotherapy (HIPEC) is used to prevent the spread of malignant tumors to other tissues after surgical or non-surgical removal of intraperitoneal tumors.

[0004] Hyperthermic intraperitoneal chemotherapy involves inserting a tube into the patient's abdominal cavity and injecting chemotherapy drugs into the cavity. The chemotherapy drugs are then drained through another tube inserted into the cavity. This cycle of chemotherapy infusion and drainage allows for the treatment of any remaining malignant tumors within the abdominal cavity.

[0005] Pressurized Intra-Peritoneal Aerosol Chemotherapy (PIPAC), a similar intraperitoneal cancer treatment, is used by installing a trocar for laparoscopic surgery into the body and inserting an anticancer agent spray nozzle through the trocar to spray the anticancer agent.

[0006] However, there is a problem in that the insertion passage formed in the trocar is a straight line and not curved, and the movement trajectory of the anticancer agent injection nozzle inserted here is also inevitably dependent on the shape of the insertion passage.

[0007] Korean Patent Publication No. 10-2021-0098154, developed and filed by the present inventor, proposes a configuration for increasing the spray area of ​​an anticancer agent. The method comprises a nozzle fixed at an angle to the patient's abdomen and a nozzle rotator that rotates the nozzle, thereby increasing the spray area through the rotation of the nozzle. However, as the nozzle continuously rotates, the connection between the horizontal bar and the nozzle becomes loose, causing the nozzle's spray angle to change. Furthermore, as the nozzle itself is inserted into the body and rotates, the nozzle may become detached from the body during the rotation process.

[0008] Accordingly, the inventors of the present invention have conceived of a system that can secure a sufficient anticancer agent spraying area while significantly reducing the risk of detachment from the body during operation.

[0009]

[0010] (Patent Document) Korean Patent Publication No. 10-2021-0098154 (August 10, 2021)

[0011]

[0012] The present invention has been devised to solve the above problems.

[0013] Specifically, the purpose is to provide a system in which a spray nozzle inserted into the abdominal cavity and spraying fluid is installed at an angle with respect to a shaft, so that the spray nozzle moves like a cone pendulum according to the rotation of the shaft, thereby expanding the area of ​​spraying fluid.

[0014] Additionally, it is intended to provide a system that addresses the diametrical problem that occurs when the injection nozzle is tilted relative to the shaft due to the elastic member and the flexible connection.

[0015] Additionally, the purpose is to provide a system in which the risk of detachment from the body is significantly reduced because the shaft only rotates in place even when the injection nozzle moves in a cone-pendulum motion.

[0016]

[0017] One embodiment of the present invention for solving the above-described problem provides an intraperitoneal fluid injection system, comprising: a shaft, a portion of which is inserted into a fluid injection target; a spray nozzle including a nozzle tip mounted at one end of the shaft at a predetermined angle with respect to an extension direction of the shaft and configured to spray fluid; and a driving unit configured to rotate the shaft about a longitudinal axis of the shaft as a rotational axis.

[0018] In one embodiment, the spray nozzle may include a shaft mounting portion mounted on the shaft and a shape-deformable connecting portion having one end coupled to the shaft mounting portion and the other end coupled to the nozzle tip.

[0019] In one embodiment, the connecting portion may include a first rigid connecting portion coupled to the shaft mounting portion, a second rigid connecting portion coupled to the nozzle tip, and a flexible connecting portion having one end inserted into the first rigid connecting portion and the other end inserted into the second rigid connecting portion.

[0020] In one embodiment, the flexible connection may be made of a soft material.

[0021] In one embodiment, the device further includes a trocar installed in the fluid injection target and having an insertion passage formed therein, wherein the shaft and the injection nozzle are inserted into the fluid injection target through the trocar, and the injection nozzle can be inserted into the fluid injection target in a state in which a portion of the shape is deformed to be parallel to the extension direction of the shaft when passing through the insertion passage.

[0022] In one embodiment, the portion that is shape-deformed may be a flexible connection.

[0023] In one embodiment, the device may further include an elastic member connecting the shaft mounting portion and the nozzle tip.

[0024] In one embodiment, the injection nozzle inserted into the fluid injection target can be restored to a position at a predetermined angle with respect to the extension direction of the shaft by the elastic member.

[0025] In one embodiment, the injection nozzle can perform a cone-pendulum motion about the shaft as the shaft rotates about the longitudinal axis.

[0026] In one embodiment, the driving unit may further include a driving unit frame on which the driving unit is installed, one or more adjusting arms configured to be height-adjustable relative to a support, and a ball joint connecting the driving unit frame and the adjusting arms to each other.

[0027] In one embodiment, the drive unit may further include a non-conductive vinyl covering the outside.

[0028] In one embodiment, the shaft may further include a control unit configured to be fluidly connected to a fluid receiving portion for receiving the fluid and configured to control at least one of an amount of fluid provided from the fluid receiving portion to the shaft and a rotational speed of the shaft by the driving portion.

[0029] In one embodiment, the fluid may comprise an anticancer agent.

[0030]

[0031] The present invention as described above has the following effects.

[0032] First, the injection nozzle that is inserted into the abdominal cavity and sprays the fluid is installed at an angle with respect to the shaft, so that the injection nozzle moves like a cone pendulum according to the rotation of the shaft, thereby having the effect of expanding the fluid spray area.

[0033] Second, the diameter problem that occurs as the injection nozzle tilts relative to the shaft is solved due to the elastic member and the flexible connection.

[0034] Third, even if the spray nozzle moves like a cone pendulum, the shaft only rotates in place, significantly reducing the risk of it becoming detached from the body.

[0035]

[0036] FIG. 1 is a schematic drawing illustrating an intraperitoneal fluid injection system according to an embodiment of the present invention.

[0037] Figure 2 is a schematic drawing for explaining the injection unit and the driving unit in the system of Figure 1.

[0038] Figure 3 is a schematic drawing for explaining the control unit in the system of Figure 1.

[0039] Figures 4 and 5 are drawings for explaining how the injection nozzle changes shape in the system of Figure 1.

[0040] FIG. 6 is a drawing for explaining a non-conductive vinyl surrounding a driving unit in an intraperitoneal fluid injection system according to another embodiment of the present invention.

[0041] Fig. 7 is an exploded perspective view of the injection unit in the system of Fig. 1.

[0042] Fig. 8 is a part of a cross-sectional view taken along line AA of Fig. 7.

[0043]

[0044] Hereinafter, the present invention will be described in detail with reference to the attached drawings.

[0045]

[0046] Referring to Fig. 1, a fluid injection system according to an embodiment of the present invention includes an injection unit (100), a driving unit (200), a control unit (300), and a control unit (400). Meanwhile, in another embodiment of the present invention, a moving unit (500) for moving the fluid injection system may be further provided.

[0047]

[0048] The injection unit (100) is connected to the fluid receiving unit (1) in a fluid communication manner, and is configured to spray the fluid stored in the fluid receiving unit (1) toward the outside (inside the body of the fluid spray target, for example, the abdominal cavity) through the injection nozzle (120).

[0049]

[0050] Referring to FIG. 2, the injection unit (100) includes a shaft (110), an injection nozzle (120), and an elastic member (130).

[0051]

[0052] The shaft (110) can be connected to the fluid receiving portion (1) in a fluid communication manner through a fluid connection portion (111), and the interior of the shaft (110) has a passage through which the fluid can flow (i.e., the shaft (110) can have a hollow rod shape).

[0053] Meanwhile, as illustrated in FIG. 2, an outer portion of the shaft (110) is surrounded by a driving unit (200), and the driving unit (200) can rotate the shaft (110) 360 degrees in place with the longitudinal axis of the shaft (110) as the rotation axis. For example, the driving unit (200) may include a rotation motor capable of rotating the shaft (110).

[0054]

[0055] The injection nozzle (120) is mounted on one end of the shaft (110) and is configured to spray fluid transmitted through the passage of the shaft (110) to the outside.

[0056] Referring to FIGS. 7 and 8, the injection nozzle (120) includes a shaft mounting portion (121), a first rigid connection portion (122), a flexible connection portion (123), a second rigid connection portion (124), and a nozzle tip (125).

[0057] An injection passage that is in fluid communication with the passage of the shaft (110) is formed through the interior of the shaft mounting portion (121), the first rigid connection portion (122), the flexible connection portion (123), the second rigid connection portion (124), and the nozzle tip (125) described above, and when each component is combined, these injection passages are aligned with each other.

[0058] The mounting projection (121a) of the shaft mounting portion (121) is inserted and installed into the passage of the shaft (110), and the outer side of the mounting projection (121a) is surrounded by an O-ring (121b), thereby preventing the fluid from leaking out through the microscopic gap of the joined portion.

[0059] The first rigid connecting portion (122) is also connected to the shaft mounting portion (121) in a similar manner to the connection between the shaft mounting portion (121) and the shaft (110). Specifically, a method in which the mounting protrusion (122a) of the first rigid connecting portion (122) is inserted and installed into the injection passage of the shaft mounting portion (121) can be applied. The first rigid connecting portion (122) can be manufactured from a material having a certain strength or higher so that its shape is not deformed by an external force, and specifically, it is preferable to have a strength higher than the strength of the material forming the flexible connecting portion (123).

[0060] The flexible connecting portion (123) is configured such that one end is inserted and installed inside the first rigid connecting portion (122), and the other end is inserted and installed in the second rigid connecting portion (124). The flexible connecting portion (123) is made of a soft material, for example, polytetrafluoroethylene (PTFE), so that its shape can be easily deformed by an external force. The flexible connecting portion (123) includes a first flexible connecting portion (123a) extending in the same direction as the shaft (110), and a second flexible connecting portion (123b) extending while being bent at a predetermined angle with respect to the first flexible connecting portion (123a). When an external force is applied, the shape of the connection point of the first flexible connecting portion (123a) and the second flexible connecting portion (123b) may be deformed, and specifically, the shape may be deformed so that the first flexible connecting portion (123a) and the second flexible connecting portion (123b) are aligned in a row. When the first flexible connecting portion (123a) and the second flexible connecting portion (123b) are aligned in a row, the entire portion from the shaft (110) to the nozzle tip (125) may be aligned in a row, and the diameter based on the body insertion direction may be reduced. Therefore, the insertion into the trocar (t) may be smoothly performed.

[0061] The first rigid connection part (122) and the second rigid connection part (124) are located at one end and the other end of the flexible connection part (123), so that deformation of the shape of one end and the other end of the flexible connection part (123) can be prevented.

[0062] A second rigid connection part (124), a second rigid connection part mounting protrusion (124a), and a part of a flexible connection part (123) can be inserted and installed in the nozzle tip (125), and fluid can be sprayed through the outlet (125a) of the nozzle tip (125).

[0063]

[0064] Referring to FIGS. 4 and 8, a shaft mounting portion (121) may be connected to one end of an elastic member (130), and a nozzle tip (125) may be connected to the other end. A portion of the shaft mounting portion (121), a first rigid connecting portion (122), and a portion of a flexible connecting portion (123) may be located on the inside of the elastic member (130).

[0065] As an example of the elastic member (130), a spring may be applied, and in addition, any configuration that restores its original shape even if its shape is deformed by an external force may be applied to the elastic member (130). Due to the elastic member (130), even if the shape of the spray nozzle (120) is deformed (i.e., even if the nozzle tip and the shaft are aligned due to the shape deformation of the flexible connection part), when the applied external force is released, the nozzle tip (125) is restored to its original shape so that it can be positioned at a predetermined angle with respect to the shaft (110).

[0066] That is, in order to position the injection nozzle (120) into the abdominal cavity of the fluid injection target, the shape of the flexible connection part (123) is deformed in the process of pushing the injection nozzle (120) into the insertion passage of the trocar (t) so that the nozzle tip (125) and the shaft (110) are deformed into a shape in which they are aligned in a row, and when the insertion into the abdominal cavity is completed and the external force is released, the shape is restored so that the nozzle tip (125) is restored to a position bent at a predetermined angle with respect to the shaft (110).

[0067]

[0068] The control unit (300) is configured to control the height, angle, etc. of the injection unit (100). This will be described in detail with reference to FIGS. 1 to 3.

[0069]

[0070] A driving unit (200) that rotates a shaft (110) is installed on a driving unit frame (310). A ball joint (311) is fixedly installed on the driving unit frame (310), and the ball joint (311) is rotatably installed on a first adjusting arm (320). A first lever (321) that controls the rotation of the ball joint (311) is provided on the first adjusting arm (320), and the rotation of the ball joint (311) can be blocked or allowed by the lever (321). As a result, the insertion angle of the driving unit (200) installed on the driving unit frame (310) and the injection unit (100) coupled with the driving unit (200) can be changed.

[0071] Meanwhile, the first control arm (320) is connected to the second control arm (330) so as to be rotatable in one direction (height direction) relative to the second control arm (330). A second lever (331) is provided at the connection point for rotational control of the first control arm (320), and the height of the first control arm (320) can be adjusted by operating the second lever (331).

[0072] Meanwhile, the second adjustment arm (330) itself is also connected to the support (340) so that its height can be adjusted relative to the support (340).

[0073]

[0074] A control unit (400) may be installed on the support (340), and through the control unit (400), factors such as whether the fluid injection system is operating (ON / OFF), the fluid injection speed / amount through the injection unit (100), and the rotation speed of the injection unit (100) may be controlled.

[0075]

[0076] Meanwhile, an intraperitoneal fluid injection system according to another embodiment of the present invention may further include a non-conductive vinyl (V).

[0077] As illustrated in Fig. 6, the non-static vinyl (V) can be arranged to surround at least the entire driving unit (200) and a portion of the injection unit (100) and the control unit (300). The non-static vinyl (V) can prevent the driving unit (200) from being contaminated by external foreign substances (fluid, etc.) and prevent static electricity, thereby enabling stable driving.

[0078]

[0079] Hereinafter, the operation method of the intraperitoneal fluid injection system according to the present invention will be specifically described.

[0080]

[0081] First, a trocar (t) is installed on the body of the fluid injection target. In some cases, trocar (t) installation may be omitted.

[0082]

[0083] Next, the injection unit (100) is inserted into the body of the fluid injection target through the trocar (t). If the trocar (t) installation is omitted, the injection unit (100) itself can be inserted into the body of the fluid injection target. At this time, as shown in FIG. 5, when inserted into the abdominal cavity, the nozzle tip (125) is aligned with the shaft (110), but when the insertion is completed, the nozzle tip (125) returns to a position inclined with respect to the shaft (110). A detailed description thereof is omitted as it has been described above.

[0084]

[0085] Next, a control command is input to the control unit (400), and accordingly, a fluid (e.g., an anticancer agent) is supplied from the fluid receiving unit (1) to the injection unit (100), so that fluid injection into the abdominal cavity can be performed. The driving unit (200) rotates the shaft (110) so that the nozzle tip (125) moves like a cone and pendulum with respect to the shaft (110). As the nozzle tip (125) moves like a cone and pendulum, the fluid injection area from the nozzle tip (125) can be expanded, and it is possible to evenly inject the fluid onto cancerous tissues in the abdominal cavity.

[0086]

[0087] The fluid injected through the nozzle tip (125) is discharged to the outside through another tube inserted into the abdominal cavity, and when the fluid injection process is completed, the injection unit (100) is separated from the body. Even at this time, the nozzle tip (125) changes from an inclined position with respect to the shaft (110) to a position aligned in a line, making it possible to easily pass through a relatively narrow trocar (t) or incision.

[0088]

[0089] The entirety or at least a portion of the configuration of the system according to an embodiment of the present invention may be implemented in the form of a hardware module or a software module, or may also be implemented in the form of a combination of hardware modules and software modules.

[0090] Here, a software module can be understood as, for example, a command executed by a processor that controls operations within a system, and such a command may have a form loaded into a memory within the system.

[0091] The method according to one embodiment of the present invention described above may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., alone or in combination. The program commands recorded on the medium may be those specially designed and configured for the present invention or may be those known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of program commands include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

[0092]

[0093] While the present invention has been described with reference to embodiments illustrated in the drawings to facilitate understanding and reproduction by those skilled in the art, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible based on the embodiments of the present invention. Therefore, the scope of protection of the present invention should be defined by the claims.

[0094]

[0095] (Explanation of symbols)

[0096] C: Abdominal cavity

[0097] S: Skin

[0098] t: trocar

[0099] 1: Fluid receiving compartment

[0100] 100: Injection part

[0101] 110: Shaft

[0102] 111: Fluid connection

[0103] 120: Injection nozzle

[0104] 121: Shaft mounting part

[0105] 121a: Shaft mounting part mounting protrusion

[0106] 121b: O-ring

[0107] 122: First rigid connection

[0108] 122a: First rigid connection mounting projection

[0109] 123: Flexible joint

[0110] 123a: First flexible joint

[0111] 123b: Second flexible joint

[0112] 124: Second rigid connection

[0113] 124a: Second rigid connection mounting protrusion

[0114] 125: Nozzle tip

[0115] 125a: exhaust port

[0116] 126: Cap

[0117] 130: Elastic member

[0118] 200: Drive unit

[0119] 300: Control Unit

[0120] 310: Drive frame

[0121] 311: Ball joint

[0122] 320: First control arm

[0123] 321: Lever 1

[0124] 330: Second control arm

[0125] 331: Second lever

[0126] 340: Support

[0127] 400: Control Unit

[0128] 500: Moving Unit

Claims

1. A shaft, a portion of which is inserted into the fluid injection target; A spray nozzle comprising a nozzle tip mounted on one end of the shaft and configured to spray a fluid at a predetermined angle with respect to the extension direction of the shaft; and Including a driving unit configured to rotate the shaft with the longitudinal axis of the shaft as the rotation axis; Intraperitoneal fluid injection system.

2. In paragraph 1, The above injection nozzle, A shaft mounting part mounted on the above shaft; and A shape-deformable connecting part, wherein one end is connected to the shaft mounting part and the other end is connected to the nozzle tip; Intraperitoneal fluid injection system.

3. In paragraph 2, The above connecting part, A first rigid connecting member coupled to the above shaft mounting member; a second rigid connector coupled to the nozzle tip; and A flexible connecting member, comprising: a first end inserted into the first rigid connecting member and the other end inserted into the second rigid connecting member; Intraperitoneal fluid injection system.

4. In paragraph 2, The above flexible connecting part is manufactured from a soft material. Intraperitoneal fluid injection system.

5. In paragraph 3, It further includes a trocar installed in the fluid injection target and having an insertion passage formed inside, The above shaft and the above injection nozzle are inserted into the interior of the fluid injection target through the above trocar, The above injection nozzle is inserted into the fluid injection target with a part of the nozzle shape deformed so that it becomes parallel to the extension direction of the shaft when passing through the insertion passage. Intraperitoneal fluid injection system.

6. In paragraph 5, The above part which is deformed in shape is a ductile connection part, Intraperitoneal fluid injection system.

7. In paragraph 5, Further comprising an elastic member connecting between the shaft mounting portion and the nozzle tip; Intraperitoneal fluid injection system.

8. In paragraph 7, The injection nozzle inserted into the fluid injection target is restored to a position forming a predetermined angle with respect to the extension direction of the shaft by the elastic member. Intraperitoneal fluid injection system.

9. In paragraph 1, The above injection nozzle performs a conical pendulum motion with respect to the shaft when the shaft rotates around the longitudinal axis. Intraperitoneal fluid injection system.

10. In paragraph 1, A drive unit frame in which the above drive unit is installed; One or more adjustable arms configured to be height-adjustable relative to the support; and further comprising a ball joint connecting the above driving frame and the above adjusting arm to each other; Intraperitoneal fluid injection system.

11. In paragraph 1, Further comprising a non-conductive vinyl covering the outer side of the above driving unit, Intraperitoneal fluid injection system.

12. In paragraph 1, The above shaft is fluidically connected to a fluid receiving portion that receives the fluid, Further comprising a control unit configured to control at least one of the amount of fluid provided from the fluid receiving unit to the shaft and the rotational speed of the shaft by the driving unit. Intraperitoneal fluid injection system.

13. In paragraph 1, The above fluid contains an anticancer agent, Intraperitoneal fluid injection system.

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