Medical instrument and operation method
By integrating the disposal parts, fluid supply parts and pipe fittings into one whole, the complex operation of existing medical devices is solved, and simple and efficient tissue bulge, cut, peel and resection functions are achieved.
Patent Information
- Application Number
- CN202410175520.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-07
- Publication Date
- 2025-08-08
AI Technical Summary
Existing medical devices such as snails require alternating use of injection needles and snails when performing tissue bulge, peeling or excision, resulting in complex operation, inefficient and costly operation.
A medical device is designed, including a disposal part, a fluid supply part and a pipe fitting, integrated into a whole, with the functions of tissue bulging, cutting, peeling and resection. The pre-treatment part of the disposal part opens an injection port on the tissue, replaces the function of an injection needle, and is directly connected to the fluid channel.
It achieves simplicity and efficiency in operation, avoids alternating advance and backward operations in the endoscope, and reduces operation complexity and cost.
Smart Images
Figure CN120436738A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a medical device and an operating method thereof. Background Art
[0002] The snares and similar medical devices commonly used in the market currently basically only have the function of peeling or removing polyps or tumors. Therefore, if the user needs to perform other operations such as lifting the tissue, additional medical devices and additional operations are required. Taking the snare as an example, the common operation method for lifting, peeling or removing the tissue is: inserting the injection needle into the endoscope and aligning and piercing the injection head into the tissue, injecting liquid to make the tissue bulge, and then withdrawing the injection needle from the endoscope after completion. Then, insert the snare into the endoscope, and use the snare to remove the tissue. It can be seen that this method requires the alternating use of the injection needle and the snare, which has many defects such as complex operation, low efficiency, and high cost.
[0003] In order to solve the above technical problems, the present invention provides a medical device and an operating method, which has a simple structure and is easy and efficient to operate. Summary of the Invention
[0004] The object of the present invention is to provide a medical device and an operating method thereof, which have a simple structure, are easy and efficient to operate.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] A medical device, characterized in that it comprises:
[0007] A treatment element, at least for marking, incising, peeling off, or removing tissue, comprising a treatment body;
[0008] a fluid supply member for supplying fluid to tissue, comprising a fluid channel;
[0009] a pipe, comprising at least one cavity, wherein the cavity comprises a treatment space for arranging the treatment component and a fluid supply space for arranging the fluid supply component;
[0010] Wherein, the disposal part is placed in the pipe and the two can move relative to each other;
[0011] The fluid channel is formed by the lumen and / or by a tube component placed in the lumen.
[0012] The present invention forms the treatment component, fluid supply component and tube into an integral whole, which has the operational functions of tissue protrusion, incision, stripping and excision. Therefore, when performing different operations such as tissue protrusion, stripping and excision, the alternating advance and retreat operations in the endoscope are effectively avoided. At the same time, the structural setting between the fluid channel and the tube can also effectively avoid the treatment component and the fluid supply component from alternating advance and retreat in the tube, that is, only the treatment component can advance and retreat in the tube, and the fluid supply component can be regarded as one with the tube; the structure is simple, the operation is easy and efficient, and the cost is low.
[0013] In some embodiments, the treatment member includes a pre-treatment portion for pre-treating tissue, and the pre-treatment portion is at least a portion of the treatment body or / and is an independent component connected to the treatment body.
[0014] Compared with the treatment body, the pre-treatment portion can pre-treat the tissue, such as pre-piercing or cutting the tissue to form an injection port, so that the fluid supply component can directly inject the fluid into the tissue through the injection port.
[0015] In some embodiments, at least part of the structure of the pre-treatment portion is located distally compared to the treatment body.
[0016] It is convenient for the pre-treatment department to perform some simple operations on the tissue, such as cutting the tissue to form an injection port, etc.
[0017] In some embodiments, the ratio of the dimension of the pre-treatment portion along the axial direction of the treatment component to the dimension of the axial direction of the treatment component is in the range of 1 / 17-1 / 4.
[0018] If the ratio is too small, the contact probability or contact area between the pre-treatment part and the tissue will be very small, making it difficult to perform the pre-treatment function; if the ratio is too large, it is easy to cause damage to unintended tissues and also affect the intended function of the treatment body.
[0019] In some embodiments, the dimension of the pre-treatment portion along the axial direction of the treatment component is 1 to 5 mm.
[0020] In some embodiments, the shape of the pre-treatment portion includes but is not limited to one or a combination of V-type, I-type, L-type, O-type, and U-type; when the pre-treatment portion is V-shaped, its opening faces the proximal end, and its included angle is 25° to 65°.
[0021] Since these types have relatively protruding distal parts, they are easier to pre-treat tissues; the V-shaped ones with appropriate angles can effectively avoid problems such as the distal end of the pre-treatment part being too sharp and causing other injuries, or being too flat and causing inaccurate positioning.
[0022] In some embodiments, the disposal part includes but is not limited to a snare part, an ESD knife part, or a combination thereof.
[0023] It may also be an injection needle or any other suitable device.
[0024] In some embodiments, the fluid supply space and the treatment space are independently spaced apart so that the tube forms at least two independent cavities, wherein at least one cavity is used to form the fluid channel or to set the tube component, and one cavity is used to set the treatment component.
[0025] Placing the disposal component and the fluid supply component in two independent cavities can avoid interference between the two, and can provide a fluid channel with a smaller diameter or cross-sectional area (the cross-sectional area of the fluid channel perpendicular to its axis), so that when supplying liquid, a water column can be formed without dispersion.
[0026] In some embodiments, the fluid supply space and the disposal space are connected so that the tube includes at least one lumen, and the fluid supply component and the disposal component are located in the same lumen.
[0027] The fluid supply component and the treatment component share a cavity, wherein when the fluid channel is formed by the cavity, the fluid surrounds the treatment component and can fill the entire cavity, and the fluid supply amount per unit time is greater.
[0028] In some embodiments, a spacer is provided on the tube, which at least partially separates the fluid supply space and the disposal space.
[0029] In some embodiments, when the spacer is partially spaced, the spacer is at least placed at the distal end of the tube to form at least two processing ports, wherein at least one processing port corresponds to the fluid supply component and one processing port corresponds to the disposal component; when the spacer is fully spaced, the tube forms at least two independent cavities, wherein at least one cavity corresponds to the fluid supply component and one cavity corresponds to the disposal component.
[0030] When the spacer is partially spaced apart, the processing port formed by the spacer has the function of a throttle valve to a certain extent, and the fluid channel is convenient for forming a water column when supplying liquid.
[0031] In some embodiments, the spacer is a separate component or is integrally formed with the tube.
[0032] In some embodiments, any cross-section of the fluid channel perpendicular to its axial direction has the same size.
[0033] It can make the fluid change stable and flow out steadily.
[0034] In some embodiments, a diameter of a cross section of the fluid channel perpendicular to its axial direction is 0.16 mm to 0.8 mm.
[0035] This value facilitates the formation of a columnar fluid (such as a water column) at the far end of the pipe and stable outflow; if the value is too small, the outflow will be too small, easy to clog, and the efficiency will be low. If the value is too large, the outflow will be too large and the controllability will be poor.
[0036] In some embodiments, the cross-sectional area of the fluid channel perpendicular to its axial direction is 0.02-0.5 mm2.
[0037] This value facilitates the formation of a columnar fluid (such as a water column) at the far end of the pipe and stable outflow; if the value is too small, the outflow will be too small, easy to clog, and the efficiency will be low. If the value is too large, the outflow will be too large and the controllability will be poor.
[0038] In some embodiments, the distal end surface of the tube is flat or has a protrusion.
[0039] The flat surface is convenient for fitting with the tissue; the protrusion is convenient for inserting into the tissue, and the protrusion also has the functions of positioning, guiding, and throttling.
[0040] In some embodiments, the protrusion is provided with a through hole, and the through hole is at least connected to the fluid channel to form an extension portion of the fluid channel.
[0041] Fluid is injected into the tissue through the raised through-holes, providing high stability.
[0042] In some embodiments, a reduced diameter portion is provided in the fluid channel or in the extended portion extending from the distal end thereof.
[0043] The fluid channel facilitates the formation of a columnar fluid (such as a water column) when liquid is supplied.
[0044] In some embodiments, the fluid supply component supplies liquid and / or gas.
[0045] In some embodiments, the fluid supply member is connected to a pressure device.
[0046] The pressure device provides pressure when supplying fluid to it; requirements for tissue bulge time, bulge height, bulge stability, etc. can be achieved by adjusting the pressure of the pressure device.
[0047] In some embodiments, a disposal component mark and / or a fluid supply component mark is provided on the outer side wall of the tube near the distal end.
[0048] It is convenient to know which side the disposal component and / or the fluid supply component is located, and the efficiency is high.
[0049] In some embodiments, an operating portion is included, which is connected to the tube.
[0050] In some embodiments, the operating part or the tube is provided with a connecting member for connecting the two in a fixed connection, a sliding connection, a rotational connection, or a sliding and rotational combination; when rotationally connected, the connecting member includes a first rotating part connected to the operating part and a second rotating part connected to the tube, and a rotational connection structure is provided between the first and second rotating parts.
[0051] In some embodiments, the tube or / and the operating part are provided with a fluid injection connector and / or an electrode part; wherein the fluid injection connector is connected to the fluid supply part, and the electrode part is connected to the disposal part.
[0052] In some embodiments, a fluid injection connector is provided on the second rotating portion.
[0053] In some embodiments, the fluid channel is connected to at least an extension tube located in the fluid injection connector, and a seal is embedded between the outer periphery of the extension tube and the inner periphery of the fluid injection connector.
[0054] In some embodiments, the operating part includes an operating body, a sliding member slidably connected to the operating body, and a traction member is built into the tube; one end of the traction member is connected to the disposal member, and the other end is connected to the sliding member, and the sliding member drives the traction member to move and then drives the disposal member to at least partially extend out or enter the tube.
[0055] In some embodiments, an electrode portion is provided on the sliding member, and the electrode portion is electrically connected to the disposal member.
[0056] An operating method, using the medical device, wherein the treatment component includes a treatment body and a pre-treatment part, and the operating method includes:
[0057] S1: Pre-piercing or / and incising the tissue to be treated with the pre-treatment portion of the treatment member to form an injection port in the tissue to be treated;
[0058] S2: Align the fluid channel of the fluid supply component with the injection port and connect them so that the fluid is injected into the tissue through the injection port.
[0059] An injection port is opened in the tissue to be treated through the pre-treatment part of the treatment piece, which replaces the function of the existing injection needle to open the injection port, and then the fluid channel is directly matched with the injection port; the operation is simple.
[0060] In some embodiments, in S1, before the pre-treatment portion pre-pierces or / and cuts the tissue, the pre-treatment portion is first at least partially extended from the tube, and the positional relationship between the treatment member and the tissue to be treated is adjusted so that the treatment member is aligned with the tissue to be treated.
[0061] In some embodiments, the length of the disposal member extending from the tube portion ranges from 2 to 12 mm.
[0062] In some embodiments, in S1 , after the pre-treatment portion pre-punctures or / and cuts the tissue, the treatment member is completely inserted into the tube, and then enters S2 .
[0063] In some embodiments, in S2, the fluid channel is positioned corresponding to the injection port, the distal end face of the fluid supply component is directly in contact with the surface of the tissue to be treated, or at least the distal end of the fluid supply component is directly extended into the injection port, so that the fluid channel is connected to the injection port.
[0064] In some embodiments, after completing S1 and S2, operation S3 is performed, which includes: partially or completely extending the disposal piece out of the tube, adjusting the positional relationship between the disposal piece and the tissue to be treated so that the disposal piece is aligned with the tissue to be treated, and operating the disposal piece to peel off or / and cut off the tissue to be treated.
[0065] In some embodiments, in S3, after the treatment member is aligned with the tissue to be treated, the treatment member is powered on and then peels off or / and cuts off the tissue to be treated.
[0066] In some embodiments, a preliminary step ES is included before S1, and ES includes: determining the position of the tissue to be treated, extending the treatment member at least partially out of the tube, and allowing the treatment member to mark the edge of the tissue to be treated.
[0067] In some embodiments, in ES, the pre-treatment portion is used to mark the edge of the tissue to be treated.
[0068] In some embodiments, during operation, the fluid supply member can be driven to supply fluid to irrigate tissue.
[0069] In some embodiments, the positional relationship between the disposal part and the tissue to be treated is adjusted by any one or any combination of the following methods: adjusting the length of the disposal part extending out of the tube, adjusting the angle between the disposal part and the tissue to be treated, or rotating the disposal part.
[0070] Compared with the prior art, the present invention has the following beneficial effects:
[0071] The present invention provides a medical device and operating method with a simple structure, easy and efficient operation. The device integrates a treatment component, a fluid supply component, and a tubular component into a single unit, providing operations such as tissue elevation, incision, stripping, and excision. During operation, the pre-treatment portion of the treatment component creates an injection port in the tissue to be treated, replacing the injection port provided by an existing injection needle. The fluid channel is then directly aligned with the injection port. BRIEF DESCRIPTION OF THE DRAWINGS
[0072] Figure 1 This is a schematic diagram of the overall structure of a medical device in one embodiment;
[0073] Figure 2 is another overall structural schematic diagram of a medical device in one embodiment;
[0074] Figure 3 This is a schematic diagram of the internal structure of a medical device in one embodiment;
[0075] Figure 4 Schematic diagram of the partial structure of the distal end portion of a medical device in one embodiment;
[0076] Figure 5 for Figure 4 Schematic diagram of the internal structure;
[0077] Figure 6 This is a schematic diagram of the internal structure of an embodiment in which the fluid supply component and the treatment component are located in the same cavity;
[0078] Figure 7 This is a schematic diagram of the internal structure of an embodiment in which the fluid supply component and the treatment component are located in the same cavity;
[0079] Figure 8 This is a schematic diagram of the overall structure of a tube with a protrusion at the distal end in one embodiment;
[0080] Figure 9 for Figure 8 Schematic diagram of the internal structure;
[0081] Figure 10 Schematic diagram of the structure of a spacer in one embodiment;
[0082] Figure 11 for Figure 10 Schematic diagram of the internal structure;
[0083] Figure 12 This is another overall structural diagram of a tube with a protrusion at the distal end in one embodiment;
[0084] Figure 13 This is a schematic diagram of the internal structure of a fluid channel in an embodiment in which a reduced diameter portion is provided;
[0085] Figure 14 It is a structural schematic diagram of the disposal portion being an elliptical snare portion;
[0086] Figure 15 It is a structural diagram of a circular snare portion as the disposal portion;
[0087] Figure 16 It is a structural diagram of a shield-shaped snare portion as a disposal portion;
[0088] Figure 17It is a structural schematic diagram of a hexagonal snare portion as a disposal portion;
[0089] Figure 18 It is a structural diagram of a polygonal snare portion in which the disposal portion is provided;
[0090] Figure 19 This is a schematic diagram of the labeled tissue in ES;
[0091] Figure 20 Schematic diagram of the intermediate process of tissue uplift in S2;
[0092] Figure 21 Schematic diagram of the tissue bulge in S2;
[0093] Figure 22 A schematic diagram of the treatment component in S3 removing tissue;
[0094] Reference numerals:
[0095] Treatment part 100, treatment body 110, pre-treatment part 120, fluid channel 210, pipe fitting 300, heat shrink tube 310, traction part 320, connecting tube 330, push rod 340, spacer 350, protrusion 360, through hole 361, reduced diameter part 380, operating part 400, operating body 410, sliding part 420, electrode part 430, connecting part 500, first rotating part 510, second rotating part 520, snap-fit part 530, rotating fitting part 540, fluid injection connector 550, extension tube 551, sealing part 552, tissue to be treated 600, injection port 610. DETAILED DESCRIPTION
[0096] The present invention will be described in more detail below with reference to the accompanying drawings. It should be noted that the description of the present invention with reference to the accompanying drawings is merely illustrative and non-limiting. Different embodiments can be combined with each other to form other embodiments not shown in the following description.
[0097] As used in this specification and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not refer to the singular but also include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.
[0098] It should be noted that the axial direction is Figure 1 The direction indicated by A in the middle; the "far" and "near" are relative to the operating part, wherein the direction away from the operating part toward the disposal part is "far", and the opposite is "near".
[0099] Example 1
[0100] In one embodiment of the present invention, a medical device is provided. Figures 1 to 5 ,include:
[0101] A medical device, characterized in that it comprises:
[0102] The treatment part 100 is used to mark, cut, and remove tissues, and includes a treatment body 110 and a pre-treatment part 120. The treatment part 100 includes but is not limited to a snare part, an ESD knife part (such as a needle knife, a hook knife, etc.), an injection needle, and other instrument parts or a combination thereof. In this embodiment, the snare part is taken as an example, and the shape of the snare part can be Figure 14-18 The shape shown is oval, circular, hexagonal, shield-shaped, polygonal, crescent-shaped, etc.; the treatment piece 100 can be made of SUS304, nickel titanium, etc.;
[0103] The fluid supply component is used to supply fluid (liquid and / or gas, with liquid supply being used as an example in this embodiment) to the tissue. It is connected to a fluid source device and a pressure device (the two can be combined or independent devices, such as a syringe, an endoscope water and gas supply device, or a pump device). It includes a fluid channel 210. The fluid supply component in this embodiment is the fluid channel 210.
[0104] The distal end surface of the tube 300 is flat and includes at least two lumens, which may be three or four. The lumens include a treatment space for the treatment component 100 and a fluid supply space for the fluid supply component. The tube 300 may be made of PTFE, PP, FEP, or other materials.
[0105] an operating portion 400 connected to the pipe 300;
[0106] The treatment member 100 is placed inside the pipe 300 and the two can move relative to each other;
[0107] The fluid channel 210 is formed by the cavity and / or by a tube component fixed in the cavity. In this embodiment, the fluid channel 210 is formed by the cavity as an example.
[0108] Among them, the pre-treatment part 120 is used to pre-treat tissue, which is at least a part of the treatment body 110 or / and an independent component connected to the treatment body 110; in this embodiment, the pre-treatment part 120 is a part of the treatment body 110 and is located at the distal end compared to the treatment body 110.
[0109] Regarding the pre-treatment unit 120, specifically, in order to facilitate the pre-treatment unit 120 to perform pre-treatment operations such as incision on tissue, the pre-treatment unit 120 of this embodiment adopts the following structure:
[0110] The surface of the pre-treatment portion 120 is curved to avoid accidental damage. In addition, by adopting appropriate size, angle and other settings, the pre-treatment portion 120 can achieve functions such as guiding, positioning, and cutting. The ratio of the size of the pre-treatment portion 120 along the axial direction of the treatment part 100 to the axial size of the treatment part 100 is in the range of 1 / 17-1 / 4, preferably 1 / 16-1 / 5. The size of the pre-treatment portion 120 along the axial direction of the treatment part 100 is 1-5mm, preferably 2-4mm, such as 3mm. The pre-treatment portion 120 in this embodiment is V-shaped, with its opening facing the proximal end, and its included angle is 25°-65°, or 30°-60°, preferably 45°. In addition, the physical or chemical properties of the pre-treatment portion 120 such as stiffness and roughness can be designed through processing. For example, a coating can be attached to the pre-treatment portion 120 to enhance its stiffness and improve its applicability.
[0111] The tubing 300 includes two lumens. Specifically, a spacer 350 is integrally formed with the tubing 300. The spacer 350 completely separates the fluid supply space and the treatment space, forming two independent lumens in the tubing 300. One lumen M forms the fluid channel 210, and the other lumen N houses the treatment element 100. The size of the lumen accommodating the treatment element 100 (e.g., the diameter or cross-sectional area of the lumen perpendicular to its axial direction) can be designed to accommodate different types of treatment elements 100.
[0112] In addition, a disposal component mark and / or a fluid supply component mark is provided on the outer side wall of the tube 300 near the distal end. The mark can be of different colors or reflective design.
[0113] Regarding the fluid supply component, specifically, the size of any cross section of the fluid channel 210 perpendicular to its axial direction is the same; wherein the diameter of the cross section of the fluid channel 210 perpendicular to its axial direction is 0.16mm-0.8mm, or 0.3mm-0.7mm, preferably 0.5mm; on the other hand, the area of the cross section of the fluid channel 210 perpendicular to its axial direction can be 0.02-0.5mm 2 , can also be 0.03-0.06mm 2 , preferably 0.06mm 2 .
[0114] Regarding the operating portion 400, specifically, it includes an operating body 410; a connecting member 500 is provided on the operating portion 400 or the tube 300 for connecting the two in a fixed connection, a sliding connection, a rotational connection, or a combination of sliding and rotational connection. In this embodiment, taking rotational connection as an example, the connecting member 500 includes a first rotating portion 510 connected to the operating body 410 of the operating portion 400 and a second rotating portion 520 connected to the tube 300. A rotational connection structure is provided between the first rotating portion 510 and the second rotating portion 520. The rotational connection structure includes a snap-fit portion 530 and a rotational mating portion 540. During assembly, the first rotating portion 510 and the second rotating portion 520 are snapped together through the snap-fit portion 530 and then enter the rotational mating portion 540 to achieve rotational connection between the two.
[0115] A heat shrink tube 310 is provided at the connection between the second rotating portion 520 and the tube 300 .
[0116] The second rotating part 520 is provided with a fluid injection connector 550 connected to the fluid supply component; the fluid channel 210 is connected to at least an extension tube 551 located inside the fluid injection connector 550, and a seal 552 is embedded between the outer periphery of the extension tube 551 and the inner periphery of the fluid injection connector 550.
[0117] The operating portion 400 further includes a sliding member 420 slidably connected to the operating body 410. The tube 300 houses a traction member 320. One end of the traction member 320 is connected to the treatment member 100 via a connecting tube 330, and the other end is connected to the sliding member 420 via a push rod 340. The sliding member 420 drives the traction member 320 to move, thereby driving the treatment member 100 to at least partially extend out of or enter the tube 300. The sliding member 420 is provided with an electrode portion 430. The electrode portion 430 is connected to the push rod 340 and is electrically connected to the traction member 320 and the treatment member 100. The electrode portion 430 is connected to an energy supply device to supply energy, such as electricity, to the sliding member 420.
[0118] In the operating part 400 of this embodiment, the operating body 410 rotates relative to the pipe 300 to drive the push rod 340, the traction member 320, and the disposal member 100 to rotate; the sliding member 420 slides relative to the operating body 410 to drive the push rod 340, the traction member 320, and the disposal member 100 to move back and forth axially.
[0119] An operating method, using the medical device, wherein the treatment member 100 is a snare portion, and the specific operating method includes:
[0120] ES: After endoscopic observation, the position of the tissue to be treated 600 is found and determined, the sliding member 420 is pushed to extend the pre-treatment portion 120 (V-shaped) at least partially out of the tube 300, and the treatment member 100 (snare portion) is energized to cause the pre-treatment portion 120 to mark the edge of the tissue to be treated 600, thereby determining the position and size of the tissue to be treated 600;
[0121] S1: Push the sliding member 420 to partially extend the treatment member 100 (the snare portion) from the tube 300 by 2 to 12 mm (e.g., 5 to 10 mm). Adjust the positional relationship between the treatment member 100 and the tissue to be treated 600 so that the pre-treatment portion 120 is aligned with the tissue to be treated 600. Then, energize the treatment member 100. Then, pierce or / and incise the tissue to be treated 600 with the pre-treatment portion 120 to form an injection port 610 in the tissue to be treated 600. Then, completely insert the treatment member 100 into the tube 300.
[0122] S2: Adjust the positional relationship between the fluid supply component and the tissue to be treated 600 so that the fluid channel 210 of the fluid supply component is aligned with the injection port 610, bring the distal end surface of the fluid supply component into contact with the surface of the tissue to be treated 600 (or further press it), connect the fluid channel 210 with the injection port 610, supply fluid to the fluid supply component, and allow the fluid to be injected into the tissue through the fluid channel 210 and the injection port 610. When the tissue to be treated 600 swells to the desired state, stop the fluid supply;
[0123] S3: Push the sliding member 420 to completely extend the treatment member 100 (snap part) out of the tube 300, adjust the positional relationship between the treatment member 100 and the tissue to be treated 600 so that the treatment member 100 is aligned with the tissue to be treated 600, and the treatment member 100 (snap part) completely covers the raised tissue to be treated 600, push the sliding member 420 to make a part of the treatment member 100 (snap part) enter the tube 300, the treatment member 100 (snap part) contracts to tighten the tissue to be treated 600, and then energize the treatment member 100 (snap part), and then operate the treatment member 100 (snap part) to peel off or / and cut off the tissue to be treated 600.
[0124] Among them, in ES, the mark includes an electrical mark and / or a dye mark; wherein in the electrical mark, the treatment part 100 is energized; wherein in the dye mark, the treatment part 100 is connected to a dye liquid device; this embodiment is an electrical mark.
[0125] During the above operation, the fluid supply component can be driven to supply fluid to flush tissue, deliver medicine, etc. according to needs to ensure a clear field of vision. For example, in S3, during the process of the treatment component 100 peeling off or / and cutting off the tissue to be treated 600, smoke or blood that interferes with the operator's vision is likely to be generated, and the fluid supply component can be driven to supply fluid to flush the tissue.
[0126] The positional relationship between the treatment part 100 or the fluid supply part and the tissue to be treated 600 is adjusted by any one or any combination of the following methods: adjusting the length of the treatment part 100 extending out of the tube 300, adjusting the angle between the treatment part 100 and the tissue to be treated 600, or rotating the treatment part 100.
[0127] Example 2
[0128] The difference between the second embodiment and the first embodiment is that:
[0129] like Figure 6-11 As shown, the fluid supply space and the disposal space are connected so that the tube 300 includes at least one cavity, and the fluid supply component and the disposal component 100 are located in the same cavity, which forms the fluid channel 210; when the spacer 350 is partially spaced, the spacer 350 is at least placed at the distal end of the tube 300 to form at least two disposal ports, wherein at least one disposal port corresponds to the fluid supply component and one disposal port corresponds to the disposal component 100.
[0130] The spacer 350 can be integrally formed with the pipe 300, which is adopted in this embodiment; of course, it can also be an independent component, such as a connecting sleeve that can be directly sleeved on the distal end of the pipe 300.
[0131] Of course, in some embodiments, as shown in the figure, when the fluid supply component and the treatment component 100 are located in the same cavity, the spacer 350 is not provided in the cavity.
[0132] Example 3
[0133] The difference between the third embodiment and the first and second embodiments is that:
[0134] like Figure 8-12 As shown, the distal end face of the tube 300 is provided with a protrusion 360 or a protrusion 360 is provided on an independent part connected to the distal end of the tube 300 (such as a connecting sleeve serving as a spacer 350, whose axial length can be 2 to 8 mm, such as 3 to 6 mm), and the protrusion 360 is provided with a through hole 361, and the through hole 361 is at least connected to the fluid channel 210 to form an extension of the fluid channel 210. It can be said that the through hole 361 can be regarded as a part of the fluid channel 210.
[0135] The axial length between the distal end of the protrusion 360 and the distal end of the tube 300 is 0.4 to 2.2 mm, and may be 0.8 mm; the diameter of the cross section of the through hole 361 perpendicular to its axial direction is 0.1 to 0.8 mm, and may be 0.2 to 0.5 mm. When taking specific values, it may be the same as or different from the numerical value of the fluid channel 210.
[0136] During operation S2, the protrusion 360 can be directly extended into the injection port 610, so that the fluid channel 210, the through hole 361 and the injection port 610 are correspondingly connected; the protrusion 360 can be used to locate and guide the positional relationship between the fluid supply component and the tissue, and can at least make the positions of the through hole 361 and the injection port 610 staggered, and can also make the water flow into a column to avoid water flow scattering, etc., thereby improving operating efficiency.
[0137] Example 4
[0138] The difference between the third embodiment and the first, second and third embodiments is that:
[0139] like Figure 9 、 Figure 13 As shown, a reduced diameter portion 380 is provided in the fluid channel 210 or in the extended portion (such as the protrusion 360) extending from the distal end of the fluid channel 210, which makes it easier for the output fluid to form a water column; specifically, the reduced diameter portion 380 is located at the distal end of the fluid channel 210 or is arranged near the distal end of the fluid channel 210 or is directly arranged in the through hole 361, etc., in various forms or combinations.
[0140] The reduced diameter portion 380 is integrally formed with the pipe 300 or is an independent component.
[0141] Furthermore, the reduced diameter portion 380 is flush with the end face of the fluid channel 210, or is retracted relative to the end face of the fluid channel 210, or is convex relative to the end face of the fluid channel 210; the inner surface of the reduced diameter portion 380 can form a step or a smoothly transitioned arc surface or a smoothly transitioned plane, etc. For example, the reduced diameter portion 380 is trumpet-shaped in a cross section perpendicular to the radial direction.
[0142] Furthermore, the reduced diameter portion 380 forms a larger diameter channel and a smaller diameter channel in the entire fluid channel 210 or the channel connecting the fluid channel 210 and the through hole 361, wherein the cross-sectional diameter of the larger diameter channel perpendicular to its axial direction is 0.7 to 1.0 mm, the cross-sectional diameter of the smaller diameter channel perpendicular to its axial direction is 0.2 to 0.4 mm, and the size of the smaller diameter channel in the axial direction is 4 to 6 mm.
[0143] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.
Claims
1. A medical device, characterized in that: include: A treatment element, at least for marking, incising, peeling off, or removing tissue, comprising a treatment body; a fluid supply member for supplying fluid to tissue, comprising a fluid channel; a pipe, comprising at least one cavity, wherein the cavity comprises a treatment space for arranging the treatment component and a fluid supply space for arranging the fluid supply component; Wherein, the disposal part is placed in the pipe and the two can move relative to each other; The fluid channel is formed by the lumen and / or by a tube component placed in the lumen.
2. A medical device according to claim 1, characterized in that: The treatment member includes a pre-treatment portion for pre-treating tissue. The pre-treatment portion is at least a part of the treatment body or / and is an independent component connected to the treatment body.
3. A medical device according to claim 2, characterized in that: The shape of the pre-treatment portion includes but is not limited to one or a combination of V-shape, I-shape, L-shape, O-shape, and U-shape; when the pre-treatment portion is V-shaped, its opening faces the proximal end, and its included angle is 25° to 65°.
4. The medical device according to claim 1, wherein: The disposal part includes but is not limited to a snare part, an ESD knife part or a combination thereof.
5. A medical device according to claim 1 or 2, characterized in that: The fluid supply space and the treatment space are independently arranged at intervals so that the tube forms at least two independent cavities, wherein at least one cavity is used to form the fluid channel or to set the tube component, and one cavity is used to set the treatment component.
6. A medical device according to claim 1 or 2, characterized in that: The fluid supply space and the treatment space are connected so that the pipe includes at least one cavity, and the fluid supply component and the treatment component are located in the same cavity.
7. The medical device according to claim 1, characterized in that: The tube is provided with a spacer which at least partially separates the fluid supply space and the disposal space.
8. A medical device according to claim 7, characterized in that: When the spacer is partially spaced, the spacer is at least placed at the distal end of the tube to form at least two processing ports, wherein at least one processing port corresponds to the fluid supply component and one processing port corresponds to the disposal component; when the spacer is fully spaced, the tube forms at least two independent cavities, wherein at least one cavity corresponds to the fluid supply component and one cavity corresponds to the disposal component.
9. The medical device according to claim 7, characterized in that: The spacer is an independent component or is integrally formed with the pipe.
10. The medical device according to claim 1, characterized in that: Any cross-section of the fluid channel perpendicular to its axial direction is of the same size; or, the diameter of the cross-section of the fluid channel perpendicular to its axial direction is 0.16mm to 0.8mm; or, the area of the cross-section of the fluid channel perpendicular to its axial direction is 0.02-0.5mm2.
11. A medical device according to claim 1 or 10, characterized in that: The distal end surface of the pipe is flat or has a protrusion.
12. A medical device according to claim 11, characterized in that: The protrusion is provided with a through hole, which is at least communicated with the fluid channel to form an extension portion of the fluid channel.
13. The medical device according to claim 1, characterized in that: A reduced diameter portion is provided in the fluid channel or in an extended portion extending from its distal end.
14. The medical device according to claim 1, characterized in that: The fluid supply component supplies liquid and / or gas; the fluid supply component is connected to a pressure device.
15. The medical device according to claim 1, characterized in that: The pipe is provided with a disposal part mark and / or a fluid supply part mark.
16. The medical device according to claim 1, characterized in that: It includes an operating part, which is connected to the pipe fitting; the operating part or the pipe fitting is provided with a connecting piece for connecting the two in a fixed connection, a sliding connection, a rotational connection, or a sliding and rotational combination; when the connection is rotationally connected, the connecting piece includes a first rotating part connected to the operating part and a second rotating part connected to the pipe fitting, and a rotation connection structure is provided between the first and second rotating parts; the second rotating part is provided with a fluid injection joint.
17. The medical device according to claim 16, characterized in that: The pipe and / or the operating part are provided with a fluid injection joint and / or an electrode part; wherein the fluid injection joint is connected to the fluid supply part, and the electrode part is connected to the disposal part.
18. A medical device according to claim 17, characterized in that: The fluid channel is connected to at least an extension tube located in the fluid injection joint, and a sealing member is embedded between the outer periphery of the extension tube and the inner periphery of the fluid injection joint.
19. An operating method, characterized in that: The medical device according to any one of claims 1 to 18 is used, wherein the treatment component includes a treatment body and a pre-treatment portion, and the operation method includes: S1: Pre-piercing or / and incising the tissue to be treated with the pre-treatment portion of the treatment member to form an injection port in the tissue to be treated; S2: Align the fluid channel of the fluid supply component with the injection port and connect them so that the fluid is injected into the tissue through the injection port.
20. The operating method according to claim 19, characterized in that: In S1, before the pre-treatment portion pre-punctures or / and cuts the tissue, the pre-treatment portion is first at least partially extended from the tube, and the positional relationship between the treatment member and the tissue to be treated is adjusted so that the treatment member is aligned with the tissue to be treated; the length of the portion of the treatment member extending from the tube is in the range of 2 to 12 mm; in S1, after the pre-treatment portion pre-punctures or / and cuts the tissue, the treatment member is completely inserted into the tube, and then S2 is entered.
21. The operating method according to claim 19, characterized in that: In S2, the fluid channel is positioned correspondingly to the injection port, and the distal end surface of the fluid supply component is directly in contact with the surface of the tissue to be treated, or at least the distal end of the fluid supply component is directly extended into the injection port, so that the fluid channel is connected to the injection port; during the operation, the fluid supply component can be driven to supply fluid to flush the tissue.
22. The operating method according to claim 19, characterized in that: After completing S1 and S2, operation S3 is performed, which includes: partially or completely extending the treatment piece out of the tube, adjusting the positional relationship between the treatment piece and the tissue to be treated so that the treatment piece is aligned with the tissue to be treated, and operating the treatment piece to peel off and / or cut off the tissue to be treated.
23. The operating method according to claim 22, characterized in that: In S3, after the treatment member is aligned with the tissue to be treated, the treatment member is powered on and then peels off or / and cuts off the tissue to be treated.
24. The operating method according to claim 19, characterized in that: Before S1, a preliminary step ES is included, which includes: determining the position of the tissue to be treated, extending the treatment member at least partially out of the tube, and allowing the treatment member to mark the edge of the tissue to be treated.