Medical discharge tool using multiple treatment tools

Abstract

The present invention provides a medical discharge instrument comprising: a body provided with one or more operation handles; a first guiding member and a first treatment tool, the first guiding member transmits the pulling force of the operation handle, and the first treatment tool is connected to the tail end of the first guiding member; a second guiding member and a second treatment tool, the second guiding member transmits the pulling force of the operation handle, and the second treatment tool is connected to the tail end of the second guiding member; and a tube part that guides the first treatment tool and the second treatment tool into the body and has a double lumen, in which a first lumen and a second lumen are formed, the first guide being inserted into the first lumen, the second guide being inserted into the second lumen, and a single lumen, in which the first guide is inserted into the first lumen and the second guide is inserted into the second lumen. A single cavity that forms a distal end portion where the first treatment tool and the second treatment tool intersect, and through which any one of the treatment tools is discharged; a two-hole bushing that is provided in the single cavity and that restricts the maximum forward distance or the maximum backward distance of the first treatment tool or the second treatment tool; and a single-hole bushing that is provided in the double lumen and that restricts the maximum retreat distance of the first treatment tool or the second treatment tool.

Description

Technical Field

[0001] This invention relates to a medical expulsion device for use in endoscopic and other surgical procedures, and to a medical expulsion device that combines two treatment devices and improves the action characteristics during expulsion. Background Technology

[0002] Endoscopic therapy using endoscopes is an important area within the field of digestive system treatment. The field of therapeutic endoscopy continues to develop with the advent of ultra-miniature solid-state imaging devices (CCDs), the miniaturization of electronic components, advancements in imaging technology, development of treatment techniques, and the increased manual skills of medical professionals.

[0003] In the prior art, the treatment of gastric or colon cancer relies on surgical methods, but with the simultaneous use of endoscopes, minimally invasive surgery has become possible. Representative endoscopic surgical methods include endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD). These endoscopic procedures utilize various types of instruments depending on the purpose of treatment, such as marking, incision, dissection, hemostasis, or irrigation, or the type of mucosa. These instruments are operated via a medical discharge device and inserted into the working channel of the endoscope for use during the procedure. Depending on the surgical task, such as marking, incision, or hemostasis, the instruments need to be changed during the procedure. In the prior art, one instrument is controlled by a medical discharge device. Therefore, in the prior art, when an instrument needs to be changed, the existing instrument must be removed before inserting another instrument into the working channel of the endoscope, which is very inconvenient.

[0004] The number of working channels on an endoscope is limited, thus limiting the number of treatment instruments that can be inserted through these channels. In various endoscopic surgeries, when procedures such as marking, incision, dissection, hemostasis, and irrigation are required, providing a medical device that allows for various treatments to be performed using multiple instruments without changing endoscope channels offers numerous advantages. For example, a high-frequency ablation device is a treatment instrument that marks or cuts mucosa by applying high-frequency waves. When operating a high-frequency ablation device, immediate control of needles for irrigation, hemostasis, and injection of saline, medications, etc., into the surgical area allows for rapid subsequent treatments, offering advantages in terms of surgical convenience, speed, and effectiveness.

[0005] However, it is not easy to provide a medical discharge device that can serve two different purposes. Figure 1This invention illustrates a medical discharge device that can be used for two treatment devices, disclosed in the applicant's earlier patent application No. 10-2023-0003978 (hereinafter referred to as the "early application patent"). The aforementioned earlier application patent discloses a component for addressing problems such as needle detachment, tube breakage, and tube rotation that occur when multiple treatment devices are independently controlled by a single handle.

[0006] However, medical expulsion devices using two treatment devices may encounter additional technical problems, namely, malfunctions in the expulsion of either treatment device. For example, when the first treatment device, which is one of the treatment devices, is expelled, a backward retraction occurs even if the second treatment device, which is the other treatment device, is not in operation. The applicant has discovered that even when the second treatment device is mechanically locked at the end of the operating handle, the second treatment device is slightly pushed backward from a designated position when the first treatment device moves forward. The applicant confirms that due to this phenomenon, when the cross-drive of the first treatment device is introduced and the second treatment device is moved forward, a malfunction occurs where the second treatment device cannot be fully expelled. Hereinafter, this phenomenon, in which the treatment device is pushed backward by the system's reaction force even when it is locked and not in operation, will be referred to as the backflash phenomenon.

[0007] Figure 2 A medical discharge device is shown that increases the drive length of the treatment device to solve the aforementioned backflow phenomenon. Figure 2 (a) shows a prior art medical discharge device having a handle stroke of length S1. Figure 2 (b) is an example of a medical discharge device with increased drive length, which has a handle stroke of length S2.

[0008] Figure 3 It shows that even if... Figure 2 Even with such improvements, there is still a possibility of malfunctions. Figure 3 (a) shows the state of the medical discharge device before operation and the needle in the designated waiting position P1. Figure 3 (b) shows the state where, with the high-frequency knife of the first treatment device 10 discharged, the needle of the second treatment device retracts from the designated waiting position P1 to P2, resulting in a backlash phenomenon. Figure 3 In state (b), when the journey is improved to Figure 2 When the tube becomes longer in form (b) and performs a discharge action, malfunctions such as tube breakage may occur. Figure 3(c) shows an example of a broken tube side when the needle is ejected via a cross drive. This is because the needle is pushed back beyond a designated position and then enters the bent tube side as it advances.

[0009] Reference Figure 3 It can be confirmed that the backlash phenomenon that causes the needle to retract beyond the designated position not only causes discharge distance problems, but also causes additional problems on the distal side of the broken and bent tube.

[0010] In summary, unexpected malfunctions may occur during the cross-discharge of multiple treatment devices within a single tube. In particular, backlash may occur even if any treatment device is locked and cannot be reversed. Backlash may occur due to the reaction force generated by the tension of the flexible tube during the advancement of another treatment device, the degree of tube bending, or backlash at the main operating section.

[0011] Furthermore, improper handling can also occur due to the surgeon's technique. Tube stretching can occur if the surgeon pulls the tube out of the endoscope incorrectly or with excessive force. Tube stretching can cause serious problems because it can misalign the bushing, designed to prevent needle dislodgement, allowing the needle to break the tube when the distal end is bent. This not only jeopardizes the safety of the procedure but also poses a risk of complications such as secondary infection or tissue damage if the tube breaks inside the patient. Therefore, a tube structure is needed that prevents stretching even under excessive tension on the medical discharge device and ensures the bushing remains in a fixed position to prevent needle-induced tube breakage.

[0012] (Existing technical literature)

[0013] (Patent Documents)

[0014] Korean Patent Application No. 10-2023-0003978

[0015] Korean Patent Publication No. 10-2022-0014413 Summary of the Invention

[0016] Technical problems to be solved

[0017] The purpose of this invention is to provide a medical discharge device that includes a handheld component that controls multiple treatment devices through a single discharge device and improves its operational characteristics.

[0018] The purpose of this invention is to provide a medical expulsion device that is applicable to all types of high-frequency knives that can use needles simultaneously. In the IT type (Insulation Type) where the high-frequency tip is exposed from the cavity and in the spherical cavity structure where the high-frequency tip is housed inside the cavity, problems such as needle detachment, tube breakage, and tube rotation will not occur.

[0019] The purpose of this invention is to provide a medical discharge device that increases the inner wall thickness of the tube and forms a double-lumen structure, so that even if the medical operator pulls the tube excessively, the tube will not be stretched and the position of the bushing is fixed, thereby preventing tube breakage caused by needles.

[0020] Solution to the problem

[0021] This invention provides a medical expulsion device, characterized in that it comprises: a body having one or more operating handles; a first guide and a first treatment device, the first guide transmitting the pulling force of the operating handles, the first treatment device being connected to the end of the first guide; a second guide and a second treatment device, the second guide transmitting the pulling force of the operating handles, the second treatment device being connected to the end of the second guide; a tube guiding the first treatment device and the second treatment device into the body, and having a dual-lumen and a single-lumen, the dual-lumen forming a first lumen and a second lumen, the first guide penetrating the first lumen, the second guide penetrating the second lumen, the single lumen forming a distal end where the first treatment device and the second treatment device intersect, through which either treatment device is expelled; a dual-hole bushing disposed in the single lumen, limiting the maximum forward distance or maximum backward distance of the first treatment device or the second treatment device; and a single-hole bushing disposed in the dual-lumen, limiting the maximum backward distance of the first treatment device or the second treatment device.

[0022] In one embodiment, the waiting position for the first and second treatment devices to be discharged in the non-driven state of the operating handle is the inner space of the single cavity. When either treatment device is discharged from the single cavity by the operation handle, the single-hole bushing can prevent the other treatment device from disengaging from the waiting position and retracting.

[0023] In one embodiment, the double-hole bushing forms the boundary between the double cavity and the single cavity. When the first treatment device and the first guide are connected in the region of the single cavity, the second treatment device and the second guide are connected in the region of the double cavity. Since the double-hole bushing serves as the boundary, the connection positions of the treatment device and the guide are different. Therefore, the first guide can be inserted into the first hole of the double-hole bushing, and the second treatment device can be inserted into the second hole of the double-hole bushing.

[0024] In one embodiment, the double-hole bushing can limit the maximum forward distance of the second treatment device and the maximum backward distance of the first treatment device.

[0025] In one embodiment, the single-hole bushing can limit the maximum retraction distance of the second treatment device.

[0026] In one embodiment, the first treatment device may be a high-frequency knife, the first guide may be a conductive wire, the second treatment device may be a needle, and the second guide may be a needle tube.

[0027] In one embodiment, in the dual-hole bushing, the inner diameter of the first hole may be formed in a manner smaller than the outer diameter of the rear end of the first treatment device, and the inner diameter of the second hole may be formed in a manner smaller than the outer diameter of the expanded end of the second guide caused by the rear end of the second treatment device being inserted into the second guide.

[0028] In one embodiment, the single-hole bushing can be inserted into the second cavity.

[0029] In one embodiment, a hole is formed in the single-hole bushing, the hole having an inner diameter through which the second guide passes, and the inner diameter of the hole may be formed in a manner smaller than the outer diameter of the end of the second guide that expands due to the insertion of the rear end of the second treatment device into the second guide.

[0030] In one embodiment, the single-hole bushing is inserted into one of the two cavities of the dual-cavity system. The single-hole bushing is formed as a tapered shape with an expanded outer diameter at its rear end, based on the direction of insertion, so as to allow for insertion and fixation.

[0031] Furthermore, the present invention provides a medical expulsion device that uses multiple treatment devices, characterized in that it comprises: a body having one or more operating handles; a first guide and a first treatment device, the first guide transmitting the pulling force of the operating handle, the first treatment device being connected to the end of the first guide; a second guide and a second treatment device, the second guide transmitting the pulling force of the operating handle, the second treatment device being connected to the end of the second guide; a dual cavity that guides the first treatment device and the second treatment device into the body and forms a first cavity and a second cavity, the first guide penetrating the first cavity and the second guide penetrating the second cavity, wherein, in a non-driven state of the operating handle, the first treatment device forms a waiting position for driving on the outside of the dual cavity exposed from the first cavity, and the second treatment device forms a waiting position for expulsion on the inside of the dual cavity, which is the interior of the second cavity; and further comprises: a first single-hole bushing disposed in the second cavity to limit the maximum forward distance of the second treatment device; and a second single-hole bushing disposed in the second cavity to limit the maximum backward distance of the second treatment device.

[0032] In one embodiment, a hole is formed in the first single-hole bushing, the hole having an inner diameter smaller than the outer diameter of the second guide, which can limit the maximum forward distance of the second treatment device by locking the second guide.

[0033] In one embodiment, a hole is formed in the second single-hole bushing, the hole having an inner diameter through which the second guide passes, and the inner diameter of the hole may be formed in a manner smaller than the outer diameter of the end of the second guide that expands due to the insertion of the rear end of the second treatment device into the second guide.

[0034] In one embodiment, the tube portion is grooved at the distal end of the tube having the double cavity to form the single cavity, thereby the wall thickness of the distal end can be formed to be 0.4 mm to 0.65 mm.

[0035] In one embodiment, an adapter connector is also included, the rear end of which is coupled to an adapter formed in the body, and the front end of which is inserted into the tube, wherein the first treatment device and the second treatment device are guided to the body through the adapter connector.

[0036] The effects of the invention

[0037] According to the present invention, the operational characteristics of a medical expulsion device configured in a manner that allows selective control of multiple treatment devices by utilizing multiple treatment devices within the body of the handheld component can be improved. The present invention is applicable to spherical expulsion devices with multi-cavity structures consisting of single and double cavities, as well as IT-type (insulated) expulsion devices consisting only of double cavities, preventing recoil phenomena where any treatment device is pushed backward by the system's reaction force.

[0038] More specifically, according to the present invention, when multiple treatment devices are controlled by one discharge device, problems such as device detachment, tube breakage, or tube rotation can be eliminated, thereby improving the convenience, speed, and accuracy of medical practitioners in performing endoscopic surgery.

[0039] Furthermore, this invention increases the inner wall thickness of the tube and forms a double-lumen structure, preventing the tube from being stretched even if the surgical personnel pull excessively, thus maintaining the bushing's fixed position. This fundamentally prevents tube breakage caused by the needle when the distal end is bent. This invention eliminates the risk of tube breakage caused by the needle and improves the convenience and safety of surgery, ensuring both surgical efficiency for medical personnel and patient safety. Attached Figure Description

[0040] Figure 1 A medical discharge device that combines two treatment methods is shown in the prior art.

[0041] Figure 2 (a) shows that according to Figure 1 Existing medical discharge devices Figure 2 (b) shows a medical discharge device with an increased handle drive length.

[0042] Figure 3 (a) shows that according to Figure 1 The existing medical discharge device is in a pre-operation state while the needle is in the designated waiting position P1. Figure 3 (b) shows that, according to Figure 1 In the prior art, when a high-frequency knife, serving as the first treatment device, is discharged from a medical discharge device, a backlash phenomenon occurs when a needle, serving as the second treatment device, retracts from a designated waiting position P1 to P2. Figure 3 (c) shows the situation when using a cross-drive from according to Figure 2 An example of how the side of a tube is damaged when a needle is expelled from a medical discharge device of the prior art.

[0043] Figure 4 A medical discharge device according to an embodiment of the present invention is shown.

[0044] Figure 5(a) shows a tube formed as a multi-cavity structure according to an embodiment of the present invention. Figure 5 (b) shows a perspective view of the tube section.

[0045] Figure 6 (a) shows a double-hole bushing according to an embodiment of the present invention. Figure 6 (b) is an exploded perspective view of the tube section with a tight double-hole bushing.

[0046] Figure 7 (a) shows a single-hole bushing according to an embodiment of the present invention. Figure 7 (b) is a perspective view of the tube section with a fixed single-hole bushing.

[0047] Figure 8 This is an exploded view of a dual-chamber medical discharge device according to another embodiment of the present invention.

[0048] Figure 9 An adapter configured in the body according to an embodiment of the present invention is shown.

[0049] Figure 10 An adapter connector according to an embodiment of the present invention is shown.

[0050] Figure 11 A sectional view of the body according to an embodiment of the present invention is shown.

[0051] Figure 12 A tube section according to another embodiment of the present invention is shown. Detailed Implementation

[0052] The various embodiments described herein are illustrative of the invention and the disclosed technical concept, and are not intended to limit them to specific implementations. The invention and the disclosed technical concept include various modifications, equivalents, alternatives, and embodiments selectively combined in whole or in part with all of the embodiments described herein. Furthermore, the scope of the invention and the disclosed technical concept is not limited by the embodiments described below or their specific descriptions.

[0053] Unless otherwise defined, the terms used herein, including technical or scientific terms, may have the meaning commonly understood by one of ordinary skill in the art to which this invention and disclosure pertain.

[0054] As used herein, expressions such as "including," "may include," "possesses," "may possess," "has," and "may have" indicate that the features of the object have functions, actions, or constituent elements, and do not exclude the existence of other additional features. That is, such expressions should be understood as open-ended terms that include the possibility of including other embodiments.

[0055] The singular expressions used herein may include the meaning of the plural forms, provided that they are not different in the context. This also applies to the singular expressions described in the claims.

[0056] The expressions “A, B and C”, “A, B or C”, “A, B and / or C”, “at least one of A, B and C”, “at least one of A, B or C”, “at least one of A, B and / or C”, “at least one selected from A, B and C”, “at least one selected from A, B or C”, “at least one selected from A, B and / or C”, etc., used in this document refer to each listed item or all possible combinations of listed items. For example, “at least one selected from A and B” means (1) A, (2) at least one of A, (3) B, (4) at least one of B, (5) at least one of A and at least one of B, (6) at least one of A and B, (7) at least one of B and A, (8) A and B.

[0057] The expression “based on ~” as used in this article is used to describe one or more factors that influence the determination or judgment of an action or behavior described in a statement or article containing the relevant expression. This expression does not exclude additional factors that influence the relevant determination or judgment.

[0058] The expression “connected to” or “connected to” another component (e.g., a second component) as used herein may mean not only that the component is directly connected to or connected to the other component, but may also be connected or connected through a new other component (e.g., a third component).

[0059] The expression “configured to” used in this article, depending on the context, can mean “set up in a certain way”, “possessing certain capabilities”, “changed in a certain way”, “formed in a certain way”, or “capable of being configured”, which is different from the meaning of “consist”.

[0060] Various embodiments of the present disclosure will now be described with reference to the accompanying drawings. In the drawings and the description thereof, the same or substantially equivalent constituent elements may be given the same reference numerals. Furthermore, in the following description of various embodiments, repeated descriptions of the same or corresponding constituent elements may be omitted, but this does not imply that the relevant constituent elements are not included in that embodiment.

[0061] Figure 4 A medical discharge device 1 according to an embodiment of the present invention is shown.

[0062] Reference Figure 4 The medical expulsion device 1 can be used in conjunction with the first treatment device 10 and the second treatment device 30 as multiple treatment devices with different operating characteristics. The medical expulsion device 1 can have an operation module 70 and an operation handle 50 provided on the body 2 of the handheld component. The operation handle 50 can serve as the means of expelling or introducing the first treatment device 10 and the second treatment device 30. In this embodiment, when any treatment device is locked by the operation module 70, the unlocked treatment device can be driven by the operation handle 50. That is, the medical expulsion device 1 according to this embodiment can control two treatment devices with a single operating component.

[0063] The main body 2 can be configured with a slider S2 that provides a driving distance for forming treatment devices. The operating handle 50 can move forward or backward by a length equivalent to that of the slider S2. The length of the slider S2 can determine the hand travel. The driving distance of the slider S2 can be configured to be suitable for discharging each treatment device.

[0064] exist Figure 4 In the embodiment shown, a medical drainage device 1 is illustrated that uses an ESD knife 10 and a needle 30 as multiple treatment devices. Depending on the type of surgery, the types of treatment devices can be combined in various ways. However, since treatment devices with sharp ends, such as the needle 30, can directly damage the tube in case of malfunction, this embodiment is described using the needle 30 as an example among multiple treatment devices.

[0065] The first treatment device 10 and the second treatment device 30 are respectively connected to the first guide 100 and the second guide 300. The first guide 100 and the second guide 300 are respectively connected to cylinders inside the body 2, and the cylinders can be slidably driven by the slider S2. The cylinders of the first treatment device 10 and the second treatment device 30 can be provided with connecting members for connecting external attachments according to the characteristics of the treatment devices. The connecting member of the first treatment device 10 can be a first connecting part 80, and the connecting member of the second treatment device 30 can be a second connecting part 90. In this embodiment, when the first treatment device 10 is an ESD knife, the first connecting part 80 can be a power connector including a power input terminal. When the second treatment device 30 is a needle, the second connecting part 90 can be a fluid injection port for injecting drugs, etc.

[0066] The body 2 forms an adapter 22 in the front end direction, and the tube 20 can be connected to the adapter 22. In one embodiment, the tube 20 may include a protective tube 21, an outer tube 200, and an inner tube. The inner tube may include a single cavity 202 ( Figure 5 ) or dual-chamber 201 ( Figure 5 It can also be a multi-lumen tube that uses two types of lumens. Hereinafter, for ease of explanation, the region where a tube with two lumens is formed will be called a double-lumen tube, and the region where a tube with one lumen is formed will be called a single-lumen tube. Furthermore, from the perspective of the tube section 20, a tube that uses both single-lumen and double-lumen tubes, thus being a single-lumen tube in one section but a double-lumen tube in another section, is defined as a multi-lumen tube.

[0067] The type of cavity constituting the tube 20 can vary depending on the type of medical discharge device 1. Types of medical discharge devices 1 include insulation ball type, insulation crescent type, ball type, and hook type. Medical discharge devices 1 are configured in various types according to their intended use and function; in the following embodiments, ball type (hereinafter referred to as type B) and insulation ball type (hereinafter referred to as type IT) will be used as examples. In the type B medical discharge device (… Figures 4 to 7 In the ), the tube section 20 is configured as a multi-lumen tube, while in the IT-type medical discharge device ( Figure 8 In this configuration, the tube 20 can be configured as a double-lumen tube, or it can be configured as a single-lumen tube instead of a multi-lumen tube.

[0068] Reference Figure 4The tip bushing 60 constitutes the discharge tip from which the first treatment device 10 and the second treatment device 30 are discharged. According to this embodiment, the medical discharge device 1, in addition to the tip bushing 60, may also include a double-hole bushing 61 and a single-hole bushing 62 in the tube portion 20. The bushings according to this embodiment can prevent backflow of any of the treatment devices mentioned in the background art.

[0069] The main body 2 may be provided with one or more operating handles 50. According to this embodiment, the main body 2 can control both the first treatment device 10 and the second treatment device 30 via one operating handle 50. This is because, according to this embodiment, the operation module 70 locks and fixes either the first treatment device 10 or the second treatment device 30, so the unlocked treatment device can be slidably driven by the operating handle 50. The following figures illustrate an embodiment where one handle drives two treatment devices in the configuration of the operation module 70, but this is not necessarily limited to this; two handles for operating the first treatment device 10 and the second treatment device 30 may also be used on the main body 2.

[0070] The first guide 100 can transmit the pulling force of the operating handle 50 to the first treatment device 10. The first treatment device 10 can be connected to the end of the first guide 100. In this embodiment, the first treatment device 10 can be a high-frequency knife (ESDKNIFE: anti-static knife), and the first guide 100 can be a conductive wire.

[0071] The second guide 300 can transmit the pulling force of the operating handle 50 to the second treatment device 30. The second treatment device 30 can be connected to the end of the second guide 300. In this embodiment, the second treatment device 30 can be a needle, and the second guide 300 can be a needle tube.

[0072] During surgery, the tube 20 can guide the first treatment instrument 10 and the second treatment instrument 30 into the body. A tip bushing 60 is attached to the end of the tube 20, which limits the maximum advance distance of the first treatment instrument 10. In the case of the IT type, due to the insulating coating on the tip of the high-frequency knife, the tip bushing 60 accommodates the treatment instrument in a manner that exposes it to the outside. In this case, the tip bushing 60 limits the maximum retraction distance of the IT type high-frequency electrode. On the other hand, in... Figure 4 In the embodiments, the first treatment device 10 is shown as an example of a type B high-frequency electrode. Since the type B high-frequency electrode is housed inside the tip bushing 60, there is a difference in the limitation of the maximum forward distance.

[0073] exist Figure 4In one embodiment, the tube portion 20 is formed with a single cavity inside the tip bushing 60. On the other hand, when the high-frequency electrode is of the IT type, the tube portion 20 can be formed with a double cavity inside, which will be referred to later. Figure 8 Please provide an explanation.

[0074] Figure 5 (a) shows that the tube portion 20 according to an embodiment of the present invention is formed as a multi-cavity structure. Figure 5 (b) is a perspective view of the tube section. The tube section 20 may include a double cavity 201 and a single cavity 202.

[0075] Reference Figure 5 In (a), the tube portion 20 is configured such that it is divided into a single-lumen 202 region and a double-lumen 201 region at its distal end. The single-lumen 202 and the double-lumen 201 can be considered as inner tubes and can be inserted into the outer tube 200 respectively to form the tube portion 20. A multi-lumen structure can also be formed by inserting the double-lumen 201 into the single-lumen 202. In this case, the tube of the single-lumen 202 will be a tube with a longer length than the tube of the double-lumen 201 inserted therein. The single-lumen 202 region covering the end of the double-lumen 201 becomes the front end, and after the tube of the double-lumen 201 is inserted, the remaining length can naturally form the single-lumen region.

[0076] The single cavity 202 can form a waiting space so that the first treatment device 10 and the second treatment device 30 cross over in one cavity to discharge either treatment device. This can form the distal end of the tube 20.

[0077] Reference Figure 5 (b) The waiting position for discharge of the first treatment device 10 and the second treatment device 30 in the non-driven state of the operating handle 50 can be the inner space of the single cavity 202.

[0078] A double-hole bushing 61 is disposed in the single cavity 202, which can limit the maximum forward or backward distance of the first treatment device 10 or the second treatment device 30. Furthermore, the double-hole bushing 61 can form the boundary between the double cavity 201 and the single cavity 202. Due to the boundary formed by the double-hole bushing 61, the first treatment device 10 and the first guide 100 can be connected in the region of the single cavity 202, while the second treatment device 30 and the second guide 300 can be connected in the region of the double cavity 201.

[0079] Figure 6 (a) shows a double-hole bushing 61 according to an embodiment of the present invention. Figure 6 (b) is an exploded perspective view of the tube portion 20 with the double-hole bushing 61 fastened in place. Figure 5As shown, since the connection positions of the treatment device and the guide are different with the double-hole bushing 61 as the boundary, the first guide 100 can be inserted into the first hole 611 of the double-hole bushing 61, and the second treatment device 30 can be inserted into the second hole 612 of the double-hole bushing 61.

[0080] The double-hole bushing 61 can be formed such that the inner diameter of the first hole 611 is smaller than the outer diameter of the rear end of the first treatment device 10. The inner diameter of the second hole 612 can be formed such that it is smaller than the outer diameter of the end 301 of the second guide 300. The inner diameter of the second hole 612 can be formed such that it is smaller than the outer diameter of the expanded end 301 of the needle tube 300 or smaller than the outer diameter of the needle tube 300. The needle 30 is connected to the connector 33, which is inserted into the needle tube 300. Typically, the end of the needle tube 300 is expanded by heat treatment or the like, and then the connector 33 is inserted and crimped, so that the end 301 is formed to be larger than the outer diameter of the needle tube 300. Since the second guide 300 is located on the right side based on the double-hole bushing 61 (based on...), Figure 5 Therefore, the end 301 is stuck in the second hole 612, thereby limiting the maximum forward distance of the second treatment device 30.

[0081] The double-hole bushing 61 extends to the left via the first guide 100 (based on...) Figure 5 The tube passes through the first hole 611 and connects to the first treatment device 10. Therefore, in the direction of the front end of the tube, the outer diameter of the rear end of the first treatment device 10 is locked in the first hole 611. Thus, the first hole 611 can limit the maximum backward distance of the first treatment device 10.

[0082] Figure 7 (a) shows a single-hole bushing 62 according to an embodiment of the present invention. Figure 7 (b) is a perspective view of the tube portion 200 with a fixed single-hole bushing 62.

[0083] A single-hole bushing 62 is disposed in the dual cavity 201, which can limit the maximum retraction distance of the first treatment device 10 or the second treatment device 30. Here, the treatment device whose maximum retraction distance is limited by the single-hole bushing 62 is equivalent to the treatment device whose maximum forward distance is limited by the dual-hole bushing 61. In the previous embodiment, the second treatment device 30 is a needle and its maximum forward distance is limited by the dual-hole bushing 61; therefore, in this embodiment, the treatment device whose maximum retraction distance is limited by the single-hole bushing 62 can be the second treatment device 30.

[0084] When any treatment device is discharged from the single chamber 202 by driving the operating handle 50, the single-hole bushing 62 can prevent another treatment device from accidentally disengaging from the waiting position and retracting.

[0085] A single-hole bushing 62 can be inserted into the second cavity 2012. In the tube portion 20, the single-hole bushing 62 is located rearward than the double-hole bushing 61. The single-hole bushing 62 can be formed with a hole 621 having an inner diameter through which the second guide 300 passes. When the rear end of the second treatment device 30 is inserted into the second guide 300, the inner diameter of the hole 621 can be formed in a manner smaller than the outer diameter of the expanded end 301 of the second guide 300. That is, the second guide 300 has a step at its end that expands relative to the tube, and the hole 621 can have an inner diameter that allows the tube 300 to pass through but not the end 301 of the tube.

[0086] The single-hole bushing 62 can be inserted into one of the two cavities 2012 of the dual-cavity 201. The single-hole bushing 62 is formed as a cone with its outer diameter 620 expanding at the rear end relative to the insertion direction, for insertion and fixation. In one embodiment, the single-hole bushing 62 can be formed as an hourglass shape with its outer diameter expanding outwards from the center. When the single-hole bushing 62 is inserted into the appropriate position in the expanded cavity, its position is naturally fixed when the inner diameter of the cavity returns to normal due to the tapered fixing portions 620 on both sides. The single-hole bushing 62 according to this embodiment can prevent the treatment device 20 from retracting due to the aforementioned backlash phenomenon.

[0087] Figure 8 A tube 20 having a double cavity 201 is shown in a medical discharge device 1 according to another embodiment of the present invention. Figure 8 The medical discharge device 1 according to an embodiment shows an IT-type high-frequency treatment device. (Refer to...) Figure 8 The IT-type medical discharge device 1 can have a dual-lumen 201 forming the distal end of the tube 20 without a single-lumen region. According to this embodiment, the medical discharge device 1 may include a first single-hole bushing 63 and a second single-hole bushing 62 in the tube 20.

[0088] In this embodiment, when the operating handle 50 is in a non-driven state, the first treatment device 10 can form a waiting position for driving on the outside of the dual chambers 201 exposed from the first chamber 2011. On the other hand, the second treatment device 30 can form a waiting position for discharge on the inside of the dual chambers 201, which is the inside of the second chamber 2012.

[0089] In one embodiment, both the first single-hole bushing 63 and the second single-hole bushing 62 can be hourglass-shaped, with their outer diameter gradually expanding outward from the center. Both the first single-hole bushing 63 and the second single-hole bushing 62 can be inserted into the cavity in their structural shape and fixed under pressure.

[0090] A first single-hole bushing 63 is disposed in the second cavity 2012 and can limit the maximum forward distance of the second treatment device 30. The first single-hole bushing 63 is formed with a hole having an inner diameter smaller than the outer diameter of the second guide 300, and the maximum forward distance of the second treatment device 30 can be limited by locking the second guide 300 or the end 301 of the second guide 300.

[0091] A second single-hole bushing 62 is disposed in the second cavity 2012 to limit the maximum retraction distance of the second treatment device 30. The second single-hole bushing 62 has a hole with an inner diameter allowing the second guide 300 to pass through. Since the rear end of the second treatment device 30 is inserted into the second guide 300, the inner diameter of the hole is formed in a manner smaller than the outer diameter of the expanded end 301 of the second guide 300. That is, the inner diameter of the hole in the second single-hole bushing 62 can be formed in a manner larger than the tube 300 of the second guide and smaller than the end 301 of the second guide.

[0092] Figure 9 An adapter 22 configured in body 2 according to an embodiment of the present invention is shown.

[0093] In this embodiment, the protective tube 21 has a shorter length than the outer tube 202 and is partially formed at the proximal end where the adapter 22 is provided, so that it can be inserted and fixed to the adapter 22. The protective tube 21 can protect the tube portion 20 from external forces such as bending or compression.

[0094] The adapter 22 may include an adapter connector 40. The rear end of the adapter connector 40 is coupled to the adapter 22, and the front end is inserted into a tube 20. A first guide 100 and a second guide 300, passing through the inside of the tube 20, can pass through and be guided to the inside of the body 2 via the adapter connector 40. Figure 9 The lower end of the protective tube 21 is omitted from the view, and the adapter connector 40 and adapter 22 connected to the tube 20 are shown together in a perspective view.

[0095] In this embodiment, the adapter connector 40 can be bonded to the adapter 22 for a fixed connection. Because the blade electrode and wires generate heat, the medical discharge device used in ESD and EMR procedures must use a heat-resistant tube. The heat-resistant tube material is primarily polytetrafluoroethylene (PTFE), and cyanoacrylate adhesives cannot be used. The tube 20 cannot be directly bonded to the adapter 22; instead, it is fixed by pressure insertion. This pressure-fixing method is sufficient to secure the tube firmly without it falling off. However, the pressure-fixing method has the limitation of reduced rotational fixing force. In particular, when the handheld device is repeatedly used, the tube may twist during the twisting and rotating operations of the handheld device, which may lead to malfunction. In this embodiment, the adapter connector 40 is used as the fixing member to fix the tube 20 to the adapter 22 so that the tube 20 will not twist or rotate even when using the existing pressure insertion fixation method without adhesive bonding.

[0096] One end of the adapter connector 40 is bonded and fixed to the adapter 22, and the tube 20 is embedded and fixed to both the adapter connector 40 and the adapter 22. An embodiment of the adapter connector 40 is described in detail below.

[0097] Figure 10 An adapter connector 40 according to an embodiment of the present invention is shown.

[0098] Figure 10 The diagram illustrates the state in which the adapter connector 40 is engaged with the adapter 22 according to an embodiment of the present invention. The structure of the adapter connector 40 is divided into a rear end 41, a body 42, and a front end 43. The adapter connector 40 may be formed in a cylindrical shape so as to engage with both the fastening portion and the tube of the adapter 22.

[0099] exist Figure 10 The image shows a first guide 100 and a second guide 300 inserted into the inner tubes 201 and 202, while the inner tubes 201 and 202 and the outer tube 200 are omitted.

[0100] The adapter connector 40 may have hollows 401 and 403, through which the first guide 100 and the second guide 300 respectively pass. The adapter connector 40 may also have a sleeve 43 that extends longer than either of the hollows, thereby defining the front end.

[0101] The hollow 401 and 403 of the adapter connector 40 through which the first guide 100 and the second guide 300 respectively pass are formed with different inner diameters. Among the multiple hollow 401 and 403, a sleeve 43 can be formed in the hollow 403 with a larger inner diameter.

[0102] 51 In the adapter connector 40, the inner tube 201 is inserted into the front end 43, and the outer tube 202 is inserted to wrap around the outer peripheral surface of the adapter connector 40, allowing the adapter connector 40 to pass through. In this embodiment, the inner tube 201 is double-lumen, and the sleeve 43 can be inserted into the cavity through which the needle passes in the double lumen of the inner tube 201. To organize the embodiment of the insertion and connection of the inner tube 201 and the adapter connector 40, it should be considered that the outer diameters of the wires through which the first guide 100 and the second guide 110 pass into the tube portion 20 may be different from each other. Generally, high-frequency knife treatment instruments use metal wire to guide the treatment instrument, so the outer diameter of the wire is thin. On the other hand, since the needle treatment instrument is guided by a needle tube connected to it for injecting sterile water or drugs, the outer diameter of the needle tube is formed to be thicker. Thus, the lumens of the inner tube 201, which accommodates the needle and the high-frequency knife in a double-lumen configuration, can be formed with different inner diameters.

[0103] In this embodiment, a small-diameter wire, such as that of a high-frequency cutting wire treatment device, is inserted into the small-diameter hollow 401 of the adapter connector. A large-diameter wire, such as that of a needle treatment device, is inserted into the large-diameter hollow 403 of the adapter connector. A sleeve 43 is formed in the hollow 403, which has a larger inner diameter, thereby extending the length of the hollow. When each treatment device is inserted into the hollows 401 and 403 according to the above conditions, the sleeve 43 can be inserted into the cavity through which the needle penetrates in the inner tube 201. On the other hand, the end of the cavity through which the cutting wire penetrates in the inner tube 201 abuts against the main body 42 at the position of the hollow 401. In this embodiment, the inner tube 201 is formed with an inner diameter no larger than that of the main body 42 and can be fixed in a state where it is inserted into the sleeve 43, which serves as the front end. That is, only one of the two cavities of the inner tube 201 can be inserted into the sleeve 43.

[0104] On one hand, the outer tube 200 can be inserted into the body 42 of the adapter connector 40. The outer tube 200 is a single cavity, and its inner diameter can correspond to the outer diameter of the body 42. The outer tube 200 can enclose the entire adapter connector 40 when the inner tube 201 is inserted into the sleeve 43.

[0105] The function of the adapter connector 40 will be explained below through this connection.

[0106] The rear end 41 of the adapter connector 40 can be inserted into the fastening part of the adapter 22 and glued in place. Alternatively, the rear end 41 can be inserted into the inside of the front end of the adapter 22, and the front end can be inserted into the rear end 41 and glued in place. The main body 42 supports the first guide 100 and the second guide 300, and when the adapter 22 rotates or twists, its rotational force is directly transmitted through the guides to the first treatment device 10 and the second treatment device 30. The rotational or torsional force directly transmitted to the first guide 100 and the second guide 300 is transmitted to the cavity of the inner tube 201. Therefore, when the adapter connector 40, which is fixed to the adapter 22, rotates, the inner tube 201 also receives the same rotational force. This ensures that no torsional momentum is applied to the outer tube 202 that encloses the main body 42 of the adapter connector 40, thus preventing relative rotation. Finally, when the adapter 22 is twisted or rotated, the adapter connector 40 also rotates in the same way. As the force is transmitted, both the inner tube 201 and the outer tube 202 rotate in the same way, so that the tube 20 will not twist from the adapter 22.

[0107] Figure 11 A cross-sectional view of the body 2 according to an embodiment of the present invention is shown.

[0108] Figure 11 The structure of an operation module 70 capable of selectively locking the first treatment device 10 and the second treatment device 30 is shown. In this embodiment, the body 2 may include a first cylinder 800, a second cylinder 900, and a fixing pin 77. The fixing pin 77 can move vertically within a designated groove. A first connecting portion 80 may be formed in the first cylinder 800, and a second connecting portion 90 may be formed in the second cylinder 900. The first cylinder 800 and the second cylinder 900 can slide and drive a driving distance S2.

[0109] Reference Figure 11 The first guide 100 is fixedly connected to the first cylinder 800. The second guide 300 is fixedly connected to the second cylinder 900. The operating handle 50 can pressurize and push out the operating module 70, which engages with a component in either the first cylinder 800 or the second cylinder 900. In this embodiment, based on Figure 11 When the operating module 70 is moved downwards, the retaining pin 77 is pushed down and locks the second cylinder 900. Then, the operating module 70 engages with the first cylinder 800 and moves forward together with the operating handle. Other detailed embodiments can be found in the embodiments of the applicant's prior published patent No. 2023-0038148.

[0110] Figure 12A tube portion 20' according to another embodiment of the present invention is shown. The tube portion 20' can be divided into a double-lumen region 2011' and 2012' and a single-lumen region 202', with A as the boundary. The tube portion 20' can be made from a single integrated double-lumen tube. In this case, it differs from the previous embodiments where a double-tube structure of inner and outer tubes constitutes a double-lumen and a single-lumen tube. In this embodiment, in the double-lumen tube having a first lumen 2011' and a second lumen 2012', the distal end after A is formed into a lumen 202'. As an example, a drill bit is used to drill a hole to region A at the distal end, thereby forming the two lumens into a single lumen. The tube portion 20' according to this embodiment is not limited to the above-described manufacturing embodiment; any method capable of partially forming two lumens and a single lumen from a single tube is applicable. In this case, the inner wall thickness of the double-lumen tube is preferably formed to be 0.4 mm to 0.65 mm. The inner wall thickness can refer to the thickness of the tube wall. According to this embodiment, the tube portion 20' is grooved at the distal end of the tube with a double cavity to form a single cavity, thereby the tube wall thickness at the distal end can be formed to be 0.4 mm to 0.65 mm.

[0111] Although the present invention and the disclosed technical concept have been described through the above embodiments, the technical concept of the present invention includes various substitutions, modifications, and alterations that can be implemented within the scope of those skilled in the art. Furthermore, it should be understood that such substitutions, modifications, and alterations may be included within the scope of the appended claims.

[0112] (Explanation of reference numerals in the attached diagram)

[0113] 1: Medical discharge equipment; 10: Primary treatment equipment

[0114] 100: First guide; 30: Second treatment device

[0115] 300: Second guide element; 301: End unit

[0116] 2: Body 20: Pipe

[0117] 21: Protective tube; 200: Outer tube

[0118] 201: Dual-cavity 2011: First-cavity

[0119] 2012: Second chamber; 202: Single chamber

[0120] 22: Adapter; 33: Connector

[0121] 40: Adapter connector 41: Back end

[0122] 42: Main body 43: Front end

[0123] 401, 403: Hollow 50: Operating handle

[0124] 60: Tipped bushing; 61: Double-hole bushing

[0125] 611: First hole; 612: Second hole

[0126] 62, 63: Single-hole bushing; 620: Fixing part

[0127] 621: Hole 70: Operation module

[0128] 77: Fixing pin; 80: First connecting part

[0129] 800: First cylinder; 90: Second connecting part

[0130] 900: Second cylinder

[0131] Industrial availability

[0132] This invention relates to a medical discharge device that allows for the control of multiple surgical instruments in endoscopic surgery through a single discharge device, thereby improving the convenience and stability of the procedure. In particular, its technical features, such as preventing backflow, preventing tube breakage, and preventing instrument detachment, make it highly practical in the medical field, contributing to improved surgical efficiency for medical professionals and enhanced patient safety.

Claims

1. A medical discharge device, which is used in conjunction with multiple treatment devices, characterized in that, include: The main body is provided with one or more operating handles; A first guide and a first treatment device, the first guide transmitting the pulling force of the operating handle, the first treatment device being connected to the end of the first guide; A second guide and a second treatment device, the second guide transmitting the pulling force of the operating handle, and the second treatment device being connected to the end of the second guide; The tube guides the first treatment device and the second treatment device into the body and has a double cavity and a single cavity. The double cavity forms a first cavity and a second cavity. The first guide passes through the first cavity and the second guide passes through the second cavity. The single cavity forms the distal end where the first treatment device and the second treatment device intersect. Either treatment device is discharged through the distal end. A double-hole bushing, wherein the double-hole bushing is disposed in the single cavity, limits the maximum forward distance or maximum backward distance of the first treatment device or the second treatment device; and A single-hole bushing, disposed in the dual-cavity assembly, limits the maximum retraction distance of either the first or second treatment device. The waiting position for discharge of the first and second treatment devices in the non-driven state of the operating handle is the inner space of the single cavity.

2. The medical discharge device according to claim 1, characterized in that, When any treatment device is discharged from the single chamber by the operation handle, the single-hole bushing prevents another treatment device from disengaging from the waiting position and retracting.

3. The medical discharge device according to claim 1, characterized in that, The double-hole bushing forms the boundary between the double cavity and the single cavity. When the first treatment device and the first guide are connected in the single-cavity region, the second treatment device and the second guide are connected in the dual-cavity region. The first guide is inserted into the first hole of the double-hole bushing, and the second treatment device is inserted into the second hole of the double-hole bushing, so that the connection positions of the treatment device and the guide are different with the double-hole bushing as the boundary.

4. The medical discharge device according to claim 3, characterized in that, The double-hole bushing limits the maximum forward distance of the second treatment device and the maximum backward distance of the first treatment device.

5. The medical discharge device according to claim 3, characterized in that, The single-hole bushing limits the maximum retraction distance of the second treatment device.

6. The medical discharge device according to claim 3, characterized in that, The first treatment device is a high-frequency knife, and the first guide is a conductive wire. The second treatment device is a needle, and the second guide is a needle tube.

7. The medical discharge device according to claim 3, characterized in that, In the double-hole bushing, The inner diameter of the first hole is formed in a manner that is smaller than the outer diameter of the rear end of the first treatment device. The inner diameter of the second hole is formed in a manner that is smaller than the outer diameter of the end of the second guide.

8. The medical discharge device according to claim 3, characterized in that, The single-hole bushing is inserted into the second cavity.

9. The medical discharge device according to claim 8, characterized in that, In the single-hole bushing, An aperture is formed, the aperture having an inner diameter through which the second guide member passes. The rear end of the second treatment device is inserted into the second guide, causing the end of the second guide to expand. The inner diameter of the hole is formed in a manner that is smaller than the outer diameter of the expanded end of the second guide.

10. The medical discharge device according to claim 1, characterized in that, The single-hole bushing is inserted into one of the two cavities of the double-cavity design. The single-hole bushing is formed as a tapered shape with an expanded outer diameter at the rear end, based on the direction of insertion during insertion, so as to facilitate insertion and fixation.

11. The medical discharge device according to claim 1, characterized in that, The tube portion forms a single cavity by grooving the distal end of the tube that has the double cavity, thereby forming a tube wall thickness of 0.4 mm to 0.65 mm at the distal end.

12. The medical discharge device according to claim 1, characterized in that, It also includes an adapter connector, the rear end of which is coupled to an adapter formed in the body, and the front end of which is inserted with the tube, wherein the first treatment device and the second treatment device pass through the adapter connector and are guided to the body.

13. A medical discharge device which combines a plurality of treatment devices, characterized by include: The main body is provided with one or more operating handles; A first guide and a first treatment device, the first guide transmitting the pulling force of the operating handle, the first treatment device being connected to the end of the first guide; A second guide and a second treatment device, the second guide transmitting the pulling force of the operating handle, and the second treatment device being connected to the end of the second guide; and The device has two cavities, which guide the first and second treatment instruments into the body and form a first cavity and a second cavity, with the first guide extending into the first cavity and the second guide extending into the second cavity. In the non-driven state of the operating handle, the first treatment device forms a waiting position for actuation on the outer side of the dual cavities exposed from the first cavity, and the second treatment device forms a waiting position for discharge on the inner side of the dual cavities, which is the interior of the second cavity. Also includes: A first single-hole bushing is disposed in the second cavity to limit the maximum forward distance of the second treatment device; and A second single-hole bushing is disposed in the second cavity to limit the maximum retraction distance of the second treatment device.

14. The medical discharge device according to claim 13, characterized in that, In the first single-hole bushing An aperture is formed, the aperture having an inner diameter smaller than the outer diameter of the second guide, thereby limiting the maximum forward distance of the second treatment device by locking the second guide.

15. The medical discharge device according to claim 13, characterized in that, In the second single-hole bushing An aperture is formed, the aperture having an inner diameter through which the second guide member passes. Furthermore, the inner diameter of the hole is formed in such a way that it is smaller than the outer diameter of the end of the second guide that expands as the rear end of the second treatment device is inserted into the second guide.

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