Microwave ablation water isolation needle
By designing a microwave ablation water isolation needle, using the combination of side hole injection of normal saline and indwelling needle sheath, the problem of repeated puncture injection is solved, the isolation effect and treatment experience are improved, and important organs are protected.
Patent Information
- Application Number
- CN202420816254.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
In the prior art, clinical practice requires repeated puncture and injection of normal saline during microwave ablation treatment, resulting in poor patient experience and increased physical burden, and the isolation effect after injection is unstable, affecting the treatment effect.
A microwave ablation water isolation needle is designed, including an outer needle holder, an indwelling needle sheath, an inner needle holder and a puncture needle core. Inject normal saline through the side hole and the indwelling needle sheath in the body to form a stable isolation environment to avoid repeated puncture. And reduce air impact through the foam burst net.
It effectively reduces the number of repeated punctures, improves the isolation effect, enhances the separation of important organs from treatment goals, improves the experience during treatment, and better protects important organs during microwave ablation.
Smart Images
Figure CN222341293U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of microwave treatment equipment, and in particular to a microwave ablation water isolation needle. Background Art
[0002] Microwave ablation is a minimally invasive medical treatment technology that uses microwave energy to generate heat to ablate diseased tissue in the body. This technology is particularly prominent in the field of tumor treatment, especially in the ablation treatment of solid organs such as the liver, lungs and kidneys. At present, the clinical method of water injection (i.e. water isolation) around the abdominal cavity and treatment targets is adopted so that important organs can be surrounded by saline. The heat deposition effect of saline will reduce the damage to important organs caused by the heat released by the microwave ablation needle.
[0003] Since the human body is not a general container for liquids, the saline solution injected into the body will penetrate into the interstitial space and the tissues will absorb the saline solution. The isolation fluid injected into the patient's body will be gradually absorbed and diffused to the surrounding area. The original "artificial island" will disappear in about 10 minutes. In order to overcome the above difficulties, repeated multiple injections and one-time large-scale injections of saline solution are used to solve the above contradictions. There are certain improvements and help, but repeated puncture injections of saline solution will reduce the patient's experience during the treatment process. One-time injection of too much saline solution into the body cavity will also increase the burden on the patient's body, and will also interfere with and affect the clinician's treatment effect on the lesion. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a microwave ablation water isolation needle, aiming to solve the current shortcoming of requiring repeated puncture and injection of physiological saline during water isolation in clinical practice.
[0005] The technical solution adopted by the present application to solve the technical problem is as follows: A microwave ablation water isolation needle comprises: an outer needle seat, on which a groove and a drainage tube interface are respectively provided, and the groove and the drainage tube interface are connected to each other;
[0006] An indwelling needle sheath, the indwelling needle sheath is arranged on the outer needle seat, the indwelling needle sheath is connected to the groove, and a side hole is penetrated on the outer surface of the end of the indwelling needle sheath away from the outer needle seat;
[0007] An inner needle seat, wherein the inner needle seat and the outer needle seat are detachably arranged;
[0008] The puncture needle core is arranged on the inner needle seat, the indwelling needle sheath is sleeved on the puncture needle core, and one end of the puncture needle core away from the inner needle seat protrudes from the indwelling needle sheath to form a puncture portion.
[0009] Furthermore, the side hole is in the shape of a strip arranged in the length direction of the indwelling needle sheath, and there are a plurality of side holes, and the orientations of the plurality of side holes are the same.
[0010] Further, the inner needle seat comprises: an inner needle seat body, the inner needle seat body being detachably connected to the outer needle seat;
[0011] A connecting portion is detachably connected to the inner needle seat body, and the puncture needle core is arranged on the connecting portion.
[0012] Furthermore, the inner needle seat further comprises: a first positioning portion, the first positioning portion being arranged on the inner needle seat body;
[0013] The side surface of the groove on the outer needle seat matches the depression or protrusion of the first positioning portion to form a second positioning portion, and the first positioning portion and the second positioning portion are used to limit the relative position of the indwelling needle sheath and the puncture needle core.
[0014] Furthermore, the inner needle seat body is rotatably connected to the connecting portion, and the inner needle seat body is threadedly connected to the outer needle seat.
[0015] Further, the indwelling needle sheath comprises: a needle sheath portion, the needle sheath portion being cylindrical;
[0016] A stopper, the stopper is arranged in the needle sheath part, and the stopper is arranged on the end of the needle sheath part away from the outer needle seat;
[0017] The puncture portion is matched with the stopper to be provided with a slide groove, and the opening of the slide groove is away from the inner needle seat.
[0018] Furthermore, the stopper is a conical block or a truncated cone block coaxial with the needle sheath portion, and the radius of the stopper gradually increases away from the inner needle seat;
[0019] The indwelling needle sheath further comprises a connecting block connected between the needle sheath portion and the stopper.
[0020] Furthermore, the indwelling needle sheath further comprises: a scale area, and the scale area is arranged on the outer surface of the needle sheath part.
[0021] Furthermore, the indwelling needle sheath further comprises: a plug, which is detachably disposed in the groove and is used to seal the opening of the groove.
[0022] Furthermore, the indwelling needle sheath further comprises: a foam-breaking net, the foam-breaking net is arranged in the groove, and the drainage tube interface is connected with the indwelling needle sheath through the foam-breaking net.
[0023] Compared with the prior art, the utility model provides an indwelling needle sheath to replace the previous method of injecting into the body cavity with an abdominal drainage tube or a syringe. It can indwell the human body during surgery without causing damage to the patient, and injects physiological saline through the side hole. Compared with conventional needles, it can better separate important organs from treatment targets. It can also lift up important organs during microwave ablation, control the distance between important organs and treatment targets during treatment, and better protect important organs. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 is a schematic diagram of the overall structure of the microwave ablation water isolation needle provided in this embodiment;
[0026] Figure 2 This embodiment Figure 1 A local enlarged structural schematic diagram of A;
[0027] Figure 3 The diagram is a schematic structural diagram of a portion (the end facing away from the outer needle seat) of an indwelling needle sheath (when the puncture needle core is not inserted) provided by an embodiment;
[0028] Figure 4 The diagram is a schematic structural diagram of a portion (the end facing away from the outer needle seat) of an indwelling needle sheath (after the puncture needle core is inserted) provided by an embodiment.
[0029] In the figure: 100, outer needle seat; 110, drainage tube interface; 120, second positioning part; 130, water inlet drainage tube; 210, needle sheath part; 211, side hole; 212, scale area; 220, stopper; 230, connecting block; 300, inner needle seat; 310, inner needle seat body; 320, connecting part; 330, first positioning part; 410, puncture needle core; 420, puncture part; 421, slide groove; 500, plug. DETAILED DESCRIPTION
[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.
[0034] The utility model provides Figures 1 to 4 As shown in , a microwave ablation water isolation needle is intended to solve the shortcoming of repeated puncture and injection of physiological saline when performing water isolation in clinical practice. It includes an outer needle seat 100, an indwelling needle sheath, an inner needle seat 300 and a puncture needle core 410. The indwelling needle sheath is arranged on the outer needle seat 100, and the puncture needle core 410 is arranged on the inner needle seat 300. The inner needle seat 300 and the outer needle seat 100 are detachably arranged. The indwelling needle sheath is sleeved on the puncture needle core 410, and the end of the puncture needle core 410 away from the inner needle seat 300 protrudes from the indwelling needle sheath and forms a puncture portion 420. When the indwelling needle sheath is sleeved on the puncture needle core 410, one end of the puncture needle core 410 protrudes from the indwelling needle sheath and forms a puncture portion 420. At this time, the puncture portion 420 can provide a puncture function for the indwelling needle sheath, so as to facilitate puncturing the patient's skin to reach the designated position. For the convenience of description, the direction of the microwave ablation water isolation device toward the "artificial island" is called the distal direction.
[0035] The outer needle seat 100 is provided with a groove and a drainage tube interface 110, respectively. The groove and the drainage tube interface 110 are interconnected, and the indwelling needle sheath is connected to the groove. A side hole 211 is provided through the outer surface of the indwelling needle sheath at one end away from the outer needle seat 100. Specifically, the drainage tube interface 110 is connected to a water supply device, and the indwelling needle sheath can supply water to a designated position by supplying water to the drainage tube, thereby forming an "artificial island". When a conventional needle injects saline, the spray direction of the saline is the direction in which the needle tip of the needle is pointed, and the formed "artificial island" is usually located between the important organ and the treatment target. When the saline is sprayed toward the needle tip of the needle, the important organ and the treatment target are filled with the saline and then pushed away. The adhesion between the important organ and the treatment target is not completely consistent, which may cause the saline to flow to other parts, resulting in the injection of a large amount of saline still failing to completely separate the important organ from the treatment target. Physiological saline is injected through the side hole 211, and the spray direction of the saline is perpendicular to the indwelling needle sheath. The sprayed saline can push the important organs away from the treatment target. By adjusting the position of the indwelling needle sheath, the important organs are pried and the spray direction of the saline is adjusted, which can better separate the important organs from the treatment target compared with conventional needles.
[0036] The human body is by no means a general container for liquids. The saline solution injected into the body will penetrate into the interstitial space and the tissues will absorb the saline solution. The isolation fluid injected into the patient's body will be gradually absorbed and diffused to the surrounding area. The original "artificial island" will disappear in about 10 minutes. In order to overcome the above difficulties, repeated multiple injections and one-time large-scale injections of saline solution are used to solve the above contradictions. There are certain improvements and help, but repeated puncture injections of saline solution will reduce the patient's experience during the treatment process. One-time injection of too much saline solution into the body cavity will also increase the burden on the patient's body, and will also interfere with and affect the clinician's treatment effect on the lesion.
[0037] The utility model provides an indwelling needle sheath to replace the conventional method of injecting into the body cavity using an abdominal drainage tube or a syringe. The human body can be indwelled during surgery without causing damage to the patient. Physiological saline is injected through the side hole 211, which can better separate important organs from treatment targets than conventional needles. Important organs can also be lifted up during microwave ablation, and the distance between the important organs and the treatment targets can be controlled during treatment, thereby better protecting the important organs.
[0038] In some embodiments, Figure 1 As shown in , the side hole 211 is in the shape of a strip arranged in the length direction of the indwelling needle sheath, and there are a plurality of side holes 211, and the orientations of the plurality of side holes 211 are the same. The size of the side hole 211 can be increased to prevent it from being blocked.
[0039] In some embodiments, Figure 1As shown in , the inner needle seat 300 comprises: an inner needle seat body 310, and the inner needle seat body 310 is detachably connected to the outer needle seat 100;
[0040] The connecting portion 320 is detachably connected to the inner needle seat body 310 , and the puncture needle core 410 is disposed on the connecting portion 320 .
[0041] Specifically, the inner needle seat body 310 can be detachably connected to the outer needle seat 100, and the inner needle seat body 310 can block the opening of the groove to prevent the groove from being connected to the outside and causing the groove to leak. By providing the connecting portion 320, the puncture needle core 410 can be separated from the inner needle seat body 310 after the puncture needle core 410 is used, so that the inner needle seat body 310 acts as a sealing plug for blocking the groove.
[0042] In some embodiments, Figure 1 As shown in , the inner needle hub 300 further includes: a first positioning portion 330, the first positioning portion 330 is disposed on the inner needle hub body 310;
[0043] The side surface of the groove on the outer needle seat 100 matches the first positioning portion 330 to form a second positioning portion 120 . The first positioning portion 330 and the second positioning portion 120 are used to limit the relative positions of the indwelling needle sheath and the puncture needle core 410 .
[0044] In some embodiments, the inner needle hub body 310 is rotatably connected to the connecting portion 320 , and the inner needle hub body 310 is threadedly connected to the outer needle hub 100 .
[0045] Specifically, due to the action of the first positioning portion 330 and the second positioning portion 120, rotating the inner needle seat body 310 will not drive the connecting portion 320 and the puncture needle core 410 to rotate, and the rotating inner needle seat body 310 can be connected or separated from the outer needle seat 100 by rotating the inner needle seat body 310.
[0046] In some embodiments, Figure 3 to Figure 4 As shown in , the indwelling needle sheath includes: a needle sheath part 210, which is cylindrical;
[0047] A stopper 220, wherein the stopper 220 is disposed in the needle sheath 210, and the stopper 220 is disposed on an end of the needle sheath 210 away from the outer needle hub 100;
[0048] The puncture portion 420 matches the stopper 220 and is provided with a slide groove 421 , and the opening of the slide groove 421 faces away from the inner needle seat 300 .
[0049] Specifically, the block 220 can reduce the opening size of the needle sheath 210 away from the outer needle seat 100, thereby reducing the flow rate of the opening when spraying saline, so that most of the saline is sprayed out from the side hole 211, better separating important organs from the treatment target.
[0050] In some embodiments, Figure 3 to Figure 4 As shown in , the stopper 220 is a conical block or a truncated cone block coaxial with the needle sheath 210, and the radius of the stopper 220 gradually increases away from the inner needle seat 300. This facilitates the positioning of the slide groove 421 of the puncture needle core 410 and the stopper 220;
[0051] The indwelling needle sheath further includes a connecting block 230 , which is connected between the needle sheath portion 210 and the stopper 220 .
[0052] In some embodiments, Figure 1 As shown in , the indwelling needle sheath further includes: a scale area 212, which is arranged on the outer surface of the needle sheath part 210 to facilitate medical staff to determine the puncture depth.
[0053] In some embodiments, Figure 1 As shown in , the indwelling needle sheath also includes: a plug 500, which is detachably disposed in the groove. The plug 500 is used to seal the opening of the groove. The plug 500 can prevent the groove from communicating with the outside and causing the groove to leak liquid.
[0054] In some embodiments, Figure 1 As shown in , the indwelling needle sheath further includes: a water inlet drainage tube 130 , which is disposed on the outer needle seat 100 , and is communicated with the drainage tube interface 110 .
[0055] In some embodiments, the indwelling needle sheath also includes: a foam-breaking net (not shown in the figure), which is arranged in the groove, and the drainage tube interface 110 is connected to the indwelling needle sheath through the foam-breaking net, and the foam-breaking net can be used for gas-liquid separation. In actual use, when the medical staff connects the water supply device (such as a syringe) to the drainage tube interface 110 for water supply, a certain amount of air may be injected, and the air will affect the ultrasonic imaging to a certain extent after entering the indwelling needle sheath or the human body, affecting the operation of the medical staff, and also causing a certain impact on the patient's health. By setting the foam-breaking net, when the liquid mixed with air (such as saline) passes through the foam-breaking net in the groove, the air will stay on the foam-breaking net, and when the air on the foam-breaking net converges to a certain extent, it will converge above the groove, and the foam-breaking net can prevent most of the air from reaching the indwelling needle sheath, reducing the impact of air on the ultrasonic imaging.
[0056] In summary, a microwave ablation water isolation needle is provided, including an outer needle seat, an inner needle seat, an indwelling needle sheath and a puncture needle core, the indwelling needle sheath is arranged on the outer needle seat, the puncture needle core is arranged on the inner needle seat, the indwelling needle sheath is sleeved on the puncture needle core, the outer needle seat is respectively provided with a groove and a drainage tube interface, the indwelling needle sheath and the drainage tube interface are respectively connected with the groove, and a side hole is penetrated on the outer surface of the indwelling needle sheath at one end away from the outer needle seat. The utility model replaces the previous use of an abdominal drainage tube or a syringe to inject into the body cavity by providing an indwelling needle sheath, which can indwell the human body during surgery without causing damage to the patient, and injects physiological saline through the side hole, which can better separate important organs from the treatment target than conventional needles, and can also lift up important organs during microwave ablation, control the distance between important organs and the treatment target during treatment, and better protect important organs.
[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A microwave ablation water isolation needle, characterized in that: include: An outer needle seat, wherein a groove and a drainage tube interface are respectively provided on the outer needle seat, and the groove and the drainage tube interface are communicated with each other; An indwelling needle sheath, the indwelling needle sheath is arranged on the outer needle seat, the indwelling needle sheath is connected to the groove, and a side hole is penetrated on the outer surface of the end of the indwelling needle sheath away from the outer needle seat; An inner needle seat, wherein the inner needle seat and the outer needle seat are detachably arranged; The puncture needle core is arranged on the inner needle seat, the indwelling needle sheath is sleeved on the puncture needle core, and one end of the puncture needle core away from the inner needle seat protrudes from the indwelling needle sheath to form a puncture portion.
2. The microwave ablation water isolation needle according to claim 1, characterized in that: The side hole is in the shape of a strip arranged in the length direction of the indwelling needle sheath. There are a plurality of side holes, and the directions of the plurality of side holes are the same.
3. The microwave ablation water isolation needle according to claim 1, characterized in that: The inner needle seat comprises: an inner needle seat body, the inner needle seat body being detachably connected to the outer needle seat; A connecting portion is detachably connected to the inner needle seat body, and the puncture needle core is arranged on the connecting portion.
4. The microwave ablation water isolation needle according to claim 3, characterized in that: The inner needle seat further comprises: a first positioning portion, the first positioning portion being arranged on the inner needle seat body; The side surface of the groove on the outer needle seat matches the depression or protrusion of the first positioning portion to form a second positioning portion, and the first positioning portion and the second positioning portion are used to limit the relative position of the indwelling needle sheath and the puncture needle core.
5. The microwave ablation water isolation needle according to claim 4, characterized in that: The inner needle seat body is rotatably connected to the connecting portion, and the inner needle seat body is threadedly connected to the outer needle seat.
6. The microwave ablation water isolation needle according to claim 4, characterized in that: The indwelling needle sheath comprises: a needle sheath portion, the needle sheath portion being cylindrical; A stopper, the stopper is arranged in the needle sheath part, and the stopper is arranged on the end of the needle sheath part away from the outer needle seat; The puncture portion is matched with the stopper to be provided with a slide groove, and the opening of the slide groove is away from the inner needle seat.
7. The microwave ablation water isolation needle according to claim 6, characterized in that: The stopper is a conical block or a truncated cone block coaxial with the needle sheath portion, and the radius of the stopper gradually increases away from the inner needle seat; The indwelling needle sheath further comprises a connecting block connected between the needle sheath portion and the stopper.
8. The microwave ablation water isolation needle according to claim 6, characterized in that: The indwelling needle sheath further comprises: a scale area, and the scale area is arranged on the outer surface of the needle sheath part.
9. The microwave ablation water isolation needle according to claim 1, characterized in that: The indwelling needle sheath further comprises a plug, which is detachably disposed in the groove and is used to seal the opening of the groove.
10. The microwave ablation water isolation needle according to claim 1, characterized in that: The indwelling needle sheath further comprises: a foam-breaking net, which is arranged in the groove, and the drainage tube interface is connected with the indwelling needle sheath through the foam-breaking net.