Endoscope puncture needle with biopsy and ablation functions

Abstract

The utility model provides an endoscope puncture needle with biopsy and ablation functions. The endoscope puncture needle comprises an operation main body, a biopsy needle, a catheter mechanism and a forceps channel fixer, the operation body comprises a limiting handle and a pushing rod, the limiting handle is provided with a first end and a second end which are opposite, one end of the pushing rod movably penetrates through the limiting handle through the first end, and the other end of the pushing rod is provided with a connecting part used for being externally connected with a negative pressure device or an electrode device; a needle inserting depth limiting mechanism matched with the push rod is arranged in the limiting handle, one end of the catheter mechanism is arranged in the limiting handle in a penetrating mode through a second end and communicated with the push rod, and the other end of the catheter mechanism is communicated with the biopsy needle; the forceps channel fixator is movably arranged on the catheter mechanism in a sleeving mode and used for fixing the catheter mechanism and a forceps channel opening of the endoscope. According to the utility model, the problem that the risk of postoperative complications of a patient is increased due to the increase of the number of times of puncture because the needle biopsy procedure and the ablation procedure need to be operated separately and punctured for multiple times in the existing medical procedure needing needle biopsy and interventional ablation treatment can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and more specifically, relates to an endoscopic puncture needle with both biopsy and ablation functions. Background Art

[0002] Endoscopic biopsy is a method of taking living tissue for examination through an endoscope. The lesion is detected through the endoscope, and a biopsy needle is punctured into the lesion to take living tissue for pathological examination for further diagnosis. Ablation treatment refers to using different energies to accurately locate under the guidance of imaging tools to eliminate and melt the diseased tissue. For example, radiofrequency ablation technology uses radiofrequency current flowing through the part to be ablated. Due to the rapid change of the electromagnetic field, the polar water molecules in the part to be ablated move at high speed, thereby destroying the structure of the part to be ablated to achieve the treatment purpose.

[0003] In the existing medical procedures, for patients who need combined puncture biopsy and interventional ablation treatment, the commonly used operation method is to determine the lesion location through an endoscope during the biopsy procedure of the same-stage operation, puncture the biopsy needle to the lesion location to take living tissue and then withdraw the biopsy needle, perform pathological diagnosis on the lesion, and then perform the ablation procedure, replacing the ablation needle to re-puncture to the lesion for ablation operation. In this process, multiple puncture operations are required, and the increase in the number of punctures will increase the risk of postoperative complications; or it is divided into two-stage operations, first performing the puncture biopsy operation and then arranging the ablation operation at a later stage, which increases the treatment cycle of the patient and also increases the trauma to the target organ of the patient. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that in the existing medical procedures for combined puncture biopsy and interventional ablation treatment, the puncture biopsy procedure and the ablation procedure need to be operated separately, multiple punctures are performed, the number of punctures is increased, and the risk of postoperative complications for patients is increased.

[0005] To achieve the above purpose, the utility model provides an endoscopic puncture needle with both biopsy and ablation functions, which includes an operation main body, a biopsy needle, a catheter mechanism, and a forceps channel fixator;

[0006] The operation main body includes a limit handle and a push rod. The limit handle has opposite first and second ends. One end of the push rod is movably inserted into the limit handle through the first end, and the other end of the push rod is provided with a connection part for externally connecting a negative pressure device or an electrode device;

[0007] An in-needle depth limit mechanism matching with the push rod is arranged in the limit handle,

[0008] One end of the catheter mechanism passes through the second end and is disposed within the limiting handle, and is in communication with the push rod. The other end of the catheter mechanism is in communication with the biopsy needle.

[0009] The forceps channel fixator is movably sleeved on the catheter mechanism for fixing the catheter mechanism to the forceps port of the endoscope.

[0010] Optionally, the connecting portion, the push rod, the catheter mechanism, and the biopsy needle are in communication with each other.

[0011] Optionally, the catheter mechanism includes a guiding tube and an outer sheath tube sleeved on the guiding tube. One end of the guiding tube is sleeved on the tail of the biopsy needle.

[0012] Optionally, the other end of the guiding tube is fixedly connected to the push rod.

[0013] Optionally, a developing portion and an insulating region are provided on the biopsy needle. The insulating region is located on a side of the developing portion away from the head of the biopsy needle.

[0014] Optionally, an adjusting knob is movably provided on the second end of the limiting handle. The needle insertion depth limiting mechanism includes a lead screw and a limiting block. The limiting block is movably sleeved on the lead screw. A limiting groove is provided within the limiting handle. One end of the lead screw is movably disposed within the limiting groove, and the other end of the lead screw is fixedly connected to the adjusting knob.

[0015] Optionally, an arc-shaped positioning plate matching the lead screw is provided at one end of the push rod. The free end of the arc-shaped positioning plate is oppositely disposed with the limiting block. A limiting plate with one end extending into the limiting groove is provided between the arc-shaped positioning plate and the push rod.

[0016] Optionally, the forceps channel fixator includes a first fixing cap and a second fixing cap. The first fixing cap and the second fixing cap are detachably connected. An elastic column for the catheter mechanism to pass through is provided at one end of the first fixing cap. A slot matching the elastic column is provided at one end of the second fixing cap. The width of the elastic column is greater than the width of the slot.

[0017] Optionally, the first fixing cap and the second fixing cap are connected by threads.

[0018] A threaded groove is provided at one end of the first fixing cap. The elastic column is disposed within the threaded groove. A threaded post is provided at one end of the second fixing cap. The slot is provided within the threaded post.

[0019] Optionally, a clamping channel clamping groove is circumferentially formed at the other end of the first fixing cap.

[0020] Optionally, a magnetic navigation connection port is provided at the other end of the second fixing cap.

[0021] Optionally, a scale mark is provided on the outer wall of the limiting handle.

[0022] Optionally, a connection cap is provided on the connecting portion, and the connection cap is detachably connected to the connecting portion.

[0023] The beneficial effects of the present utility model are as follows:

[0024] The endoscopic puncture needle of the present utility model that combines biopsy and ablation functions includes a limiting handle, a push rod, a biopsy needle, a catheter mechanism, and a forceps channel fixator. By providing a biopsy needle, a catheter mechanism, and a push rod that are interconnected, and providing a connecting portion at the end of the push rod to connect to an external negative pressure device or electrode device. When the connecting portion is connected to the negative pressure device, the negative pressure device and the endoscopic puncture needle provided by the present utility model can form a biopsy puncture device, creating a negative pressure state within the catheter mechanism and allowing the biopsy needle to sample and aspirate the lesion. When the connecting portion is connected to the electrode device, the electrode device and the endoscopic puncture needle provided by the present utility model can form an ablation device, providing an electrical signal to the biopsy needle through the electrode device to perform ablation treatment on the target lesion site.

[0025] With the present utility model, it is possible to simultaneously perform biopsy operations and ablation operations under an endoscope. When the biopsy needle penetrates into the target lesion through the forceps channel of the endoscope, only by replacing the external device at the connecting portion can the switching between the biopsy function and the ablation function be achieved, reducing the number of punctures and lowering the risk of postoperative complications caused by excessive punctures. By combining biopsy diagnosis and ablation treatment, it better meets the treatment needs and reduces the burden on patients and medical care.

[0026] In addition, the present utility model also controls the puncture depth of the biopsy needle by providing a needle insertion depth limiting mechanism within the limiting handle in cooperation with the push rod.

[0027] By providing a forceps channel fixator on the catheter mechanism, the catheter mechanism is limited to prevent displacement or jitter of the catheter mechanism and the endoscope during operation, affecting the use effect.

[0028] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0029] The present utility model can be better understood by referring to the descriptions made in conjunction with the accompanying drawings in the following text, where the same or similar reference numerals are used in all the accompanying drawings to denote the same or similar components.

[0030] Figure 1 FIG. 4 shows a schematic structural view of an endoscopic puncture needle having both biopsy and ablation functions according to an embodiment of the present utility model;

[0031] Figure 2 FIG. 8 shows a schematic view of the connection relationship between the endoscopic puncture needle and the electrode device according to an embodiment of the present utility model;

[0032] Figure 3 FIG. 12 shows a schematic view of the connection relationship between the endoscopic puncture needle and the negative pressure device according to an embodiment of the present utility model;

[0033] Figure 4 FIG. 16 shows a schematic structural view of the biopsy needle and the catheter mechanism according to an embodiment of the present utility model;

[0034] Figure 5 FIG. 20 shows a schematic exploded view of the operation main body according to an embodiment of the present utility model;

[0035] Figure 6 FIG. 24 shows a schematic structural view of the forceps channel fixator according to an embodiment of the present utility model;

[0036] Figure 7 FIG. 28 shows a schematic cross-sectional view of the forceps channel fixator according to an embodiment of the present utility model. Detailed Embodiment

[0037] In order to enable those skilled in the art to more fully understand the technical solutions of the present utility model, the exemplary embodiments of the present utility model will be described more comprehensively and in detail in the following text with reference to the accompanying drawings. Obviously, one or more of the embodiments of the present utility model described below are merely one or more of the specific ways capable of implementing the technical solutions of the present utility model, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept of the present utility model can be used to implement the technical solutions of the present utility model, and should not be limited by the exemplary embodiments described. Based on one or more embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0038] Embodiment: Figure 1 FIG. 38 shows a schematic structural view of an endoscopic puncture needle having both biopsy and ablation functions according to an embodiment of the present utility model, Figure 2 FIG. 40 shows a schematic view of the connection relationship between the endoscopic puncture needle and the electrode device according to an embodiment of the present utility model,Figure 3 The schematic connection diagram of the endoscopic puncture needle and the negative pressure device according to an embodiment of the present invention is shown.

[0039] Referring to Figures 1-3 , the endoscopic puncture needle with biopsy and ablation functions according to an embodiment of the present invention includes an operation main body, a biopsy needle 300, a catheter mechanism 400, and a forceps channel fixator 500;

[0040] The operation main body includes a limit handle 100 and a push rod 200. The limit handle 100 has opposite first and second ends. One end of the push rod 200 is movably inserted into the limit handle 100 through the first end, and the other end of the push rod 200 is provided with a connection part 210 for externally connecting a negative pressure device 800 or an electrode device 600;

[0041] An insertion depth limit mechanism 130 that cooperates with the push rod 200 is provided in the limit handle 100,

[0042] One end of the catheter mechanism 400 is inserted into the limit handle 100 through the second end and is communicated with the push rod 200, and the other end of the catheter mechanism 400 is communicated with the biopsy needle 300;

[0043] The forceps channel fixator 500 is movably sleeved on the catheter mechanism 400 and is used to fix the catheter mechanism 400 to the forceps channel opening of the endoscope.

[0044] Furthermore, in the embodiment of the present invention, the connection part 210, the push rod 200, the catheter mechanism 400, and the biopsy needle 300 are all communicated with each other.

[0045] Specifically, in the embodiment of the present invention, by providing the biopsy needle 300, the catheter mechanism 400, and the push rod 200 that are communicated with each other, and setting a connection part 210 at the end of the push rod 200 to connect with an external negative pressure device 800 or an electrode device 600. When the connection part 210 is connected to the negative pressure device 800, the negative pressure device 800 and the endoscopic puncture needle provided by the present invention can form a biopsy puncture device, creating a negative pressure state in the catheter mechanism 400 and sampling and aspirating the lesion by the biopsy needle 300; when the connection part 210 is connected to the electrode device 600, the electrode device 600 and the endoscopic puncture needle provided by the present invention can form an ablation device. The electrode device 600 is an ablation electrode, and an electrical signal is provided to the biopsy needle 300 through the electrode device 600 to perform ablation treatment on the target lesion site.

[0046] The endoscope puncture needle according to the embodiment of the present utility model can achieve compatibility with biopsy operations and ablation operations under the endoscope. When the biopsy needle 300 penetrates into the target lesion through the forceps channel of the endoscope, the switching between the biopsy function and the ablation function can be realized only by replacing the externally connected device at the connecting part 210, reducing the number of punctures and reducing the risk of postoperative complications caused by excessive punctures. By combining biopsy diagnosis with ablation treatment, it better meets the treatment needs and reduces the burden on patients and medical care.

[0047] Furthermore, Figure 4 FIG. shows a schematic structural diagram of a biopsy needle and a catheter mechanism according to an embodiment of the present utility model. Figure 5 FIG. shows a schematic exploded view of an operating body according to an embodiment of the present utility model.

[0048] Referring to Figure 4 and Figure 5 In the embodiment of the present utility model, the catheter mechanism 400 includes a guiding tube 410 and an outer sheath tube 420 sleeved on the guiding tube 410. One end of the guiding tube 410 is sleeved on the tail of the biopsy needle 300.

[0049] Furthermore, in the embodiment of the present utility model, the other end of the guiding tube 410 is fixedly connected to the push rod 200.

[0050] Specifically, in the embodiment of the present utility model, the guiding tube 410 is connected to the push rod 200. By pushing the push rod 200, the puncture position of the biopsy needle 300 at one end of the guiding tube 410 can be adjusted.

[0051] Furthermore, in the embodiment of the present utility model, a developing part 310 and an insulating area 320 are provided on the biopsy needle 300. The insulating area 320 is located on the side of the developing part 310 away from the head of the biopsy needle 300.

[0052] Specifically, in the embodiment of the present utility model, the developing part 310 is a platinum-iridium developing ring. The developing part 310 is sleeved on the biopsy needle 300 near its head, and can assist in positioning and planning the ablation area under CBCT; the insulating area 320 is a PI tube sleeved on the biopsy needle 300. The developing part 310 is arranged at the front end of the insulating area 320 to add a transition area to the insulating area 320 and improve the penetration ability.

[0053] By providing the insulating area 320 to play an insulating role, when the ablation electrode is externally connected to the connecting part 210, only the head position of the biopsy needle 300 exposed from the insulating area 320 has an electrical signal, and the current is applied to the lesion position, improving the safety and the accuracy of the ablation treatment.

[0054] Further, in the embodiment of the present utility model, an adjusting knob 110 is movably arranged on the second end of the limiting handle 100; the needle insertion depth limiting mechanism 130 includes a lead screw 131 and a limiting block 132, the limiting block 132 is movably sleeved on the lead screw 131, a limiting groove is arranged in the limiting handle 100, one end of the lead screw 131 is movably arranged in the limiting groove, and the other end of the lead screw 131 is fixedly connected with the adjusting knob 110.

[0055] Further, in the embodiment of the present utility model, an arc-shaped positioning plate 230 matching with the lead screw 131 is arranged at one end of the push rod 200, the free end of the arc-shaped positioning plate is arranged opposite to the limiting block 132, and a limiting plate 240 with one end extending into the limiting groove is arranged between the arc-shaped positioning plate 230 and the push rod 200.

[0056] Specifically, in the embodiment of the present utility model, the limiting block 132 matches with the lead screw 131, and the advancing distance of the push rod 200 is limited by the limiting block 132. By rotating the adjusting knob 110 to rotate the lead screw 131, driving the limiting block 132 to slide along the lead screw 131 to the target position, and then pushing the push rod 200 until the arc-shaped positioning plate abuts against the limiting block 132, the advancement is stopped, so as to realize the limitation of the needle insertion depth of the biopsy needle 300.

[0057] Further, Figure 6 The structural schematic diagram of the forceps channel fixator according to the embodiment of the present utility model is shown. Figure 7 The cross-sectional schematic diagram of the forceps channel fixator according to the embodiment of the present utility model is shown.

[0058] Referring to Figure 6 and Figure 7 , in the embodiment of the present utility model, the forceps channel fixator 500 includes a first fixing cap 510 and a second fixing cap 520, the first fixing cap 510 and the second fixing cap 520 are detachably connected, an elastic column 513 for the catheter mechanism 400 to pass through is arranged at one end of the first fixing cap 510, a slot 522 matching with the elastic column 513 is opened at one end of the second fixing cap 520, and the width of the elastic column 513 is greater than the width of the slot 522.

[0059] Further, in the embodiment of the present utility model, the first fixing cap 510 and the second fixing cap 520 are connected by threads;

[0060] A thread groove 512 is opened at one end of the first fixing cap 510, the elastic column 513 is arranged in the thread groove 512, a thread post 521 is arranged at one end of the second fixing cap 520, and the slot 522 is opened in the thread post 521.

[0061] Further, in the embodiment of the present utility model, a forceps channel clamping groove 511 is opened at the circumferential direction of the other end of the first fixing cap 510.

[0062] Further, in the embodiment of the present utility model, a magnetic navigation connection port 523 is provided at the other end of the second fixing cap 520.

[0063] Specifically, in the embodiment of the present utility model, the elastic column 513 is made of hollow silica gel material. Since the width of the elastic column 513 is greater than the width of the slot 522, when the first fixing cap 510 and the second fixing cap 520 are locked, the slot 522 will squeeze the elastic column 513, thereby clamping the outer sheath 420 of the catheter mechanism 400 located inside the elastic column 513, and connecting with the forceps channel opening of the endoscope through the end of the first fixing cap 510 or the second fixing cap 520, so as to fix the catheter mechanism 400 to the endoscope, prevent the catheter mechanism 400 from shaking or displacing with the forceps channel of the endoscope during the operation, and improve the positioning accuracy.

[0064] Specifically, in the embodiment of the present utility model, both ends of the forceps channel fixator 500 can be respectively connected to the forceps channel openings of different endoscopes, and the direction of the forceps channel fixator 500 is set according to the forceps channel structure of the endoscope in practical applications. The forceps channel clamping groove 511 at the end of the first fixing cap 510 can be connected to the silica gel cap 700 at the forceps channel of a common endoscope, and the magnetic navigation connection port 523 at the end of the second fixing cap 520 can be connected to the forceps channel openings of various magnetic navigation endoscopes.

[0065] Further, in the embodiment of the present utility model, a scale mark 120 is provided on the outer wall of the limit handle 100.

[0066] Specifically, in the embodiment of the present utility model, a transparent part is provided on the limit handle 100 in its length direction, the scale mark 120 is arranged on one side of the transparent part, and a scale line corresponding to the transparent part is provided on the limit block 132. The position of the limit block 132 is displayed through the transparent part, and the puncture depth of the biopsy needle 300 is confirmed according to the corresponding situation between the scale line on the limit block 132 and the scale mark.

[0067] Further, in the embodiment of the present utility model, a connection cap 220 is provided on the connection part 210, and the connection cap 220 is detachably connected to the connection part 210.

[0068] Specifically, for the endoscopic puncture needle in the embodiment of the present utility model, the connection part 210 is sealed by the connection cap 220 when not in use to prevent contamination.

[0069] Although one or more embodiments of the present utility model have been described above, those of ordinary skill in the art should understand that the present utility model can be implemented in any other form without departing from its gist and scope. Therefore, the embodiments described above are illustrative rather than restrictive. Many modifications and substitutions will be obvious to those of ordinary skill in the art without departing from the spirit and scope of the present utility model as defined by the appended claims.

Claims

1. An endoscopic puncture needle with both biopsy and ablation functions, characterized in that, It includes an operating body, a biopsy needle, a catheter mechanism and a forceps channel fixator; The operating body includes a limiting handle and a push rod. The limiting handle has opposite first and second ends. One end of the push rod is movably inserted into the limiting handle through the first end, and the other end of the push rod is provided with a connecting portion for externally connecting a negative pressure device or an electrode device; An in-needle depth limiting mechanism cooperating with the push rod is arranged in the limiting handle; One end of the catheter mechanism is inserted into the limiting handle through the second end and is communicated with the push rod, and the other end of the catheter mechanism is communicated with the biopsy needle; The forceps channel fixator is movably sleeved on the catheter mechanism and is used for fixing the catheter mechanism to the forceps channel opening of the endoscope.

2. The endoscopic puncture needle with biopsy and ablation functions according to claim 1, wherein The connecting portion, the push rod, the catheter mechanism and the biopsy needle are all communicated with each other.

3. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, characterized in that, The catheter mechanism includes a guiding tube and an outer sheath tube sleeved on the guiding tube. One end of the guiding tube is sleeved on the tail of the biopsy needle.

4. The endoscopic puncture needle with both biopsy and ablation functions according to claim 3, characterized in that, The other end of the guiding tube is fixedly connected to the push rod.

5. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, wherein The biopsy needle is provided with a developing portion and an insulating region. The insulating region is located on one side of the developing portion away from the head of the biopsy needle.

6. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, characterized in that, An adjusting knob is movably arranged on the second end of the limiting handle; The in-needle depth limiting mechanism includes a lead screw and a limiting block. The limiting block is movably sleeved on the lead screw. A limiting groove is arranged in the limiting handle. One end of the lead screw is movably arranged in the limiting groove, and the other end of the lead screw is fixedly connected to the adjusting knob.

7. The endoscopic puncture needle with both biopsy and ablation functions according to claim 6, characterized in that, One end of the push rod is provided with an arc-shaped positioning plate matching the lead screw. The free end of the arc-shaped positioning plate is arranged opposite to the limiting block. A limiting plate with one end extending into the limiting groove is arranged between the arc-shaped positioning plate and the push rod.

8. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, characterized in that, The forceps channel fixator includes a first fixing cap and a second fixing cap. The first fixing cap and the second fixing cap are detachably connected. One end of the first fixing cap is provided with an elastic column through which the catheter mechanism passes. One end of the second fixing cap is provided with a slot matching the elastic column. The width of the elastic column is greater than the width of the slot.

9. The endoscopic puncture needle with both biopsy and ablation functions according to claim 8, wherein, The first fixing cap and the second fixing cap are connected by threads; A thread groove is arranged at one end of the first fixing cap. The elastic column is arranged in the thread groove. A thread post is arranged at one end of the second fixing cap. The slot is arranged in the thread post.

10. The endoscopic puncture needle with biopsy and ablation functions according to claim 8, characterized in that, A forceps channel clamping groove is circumferentially arranged at the other end of the first fixing cap.

11. The endoscopic puncture needle with both biopsy and ablation functions according to claim 8, characterized in that, A magnetic navigation connection port is arranged at the other end of the second fixing cap.

12. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, wherein A scale mark is arranged on the outer wall of the limiting handle.

13. The endoscopic puncture needle with both biopsy and ablation functions according to claim 1, characterized in that, A connection cap is arranged on the connecting portion. The connection cap is detachably connected to the connecting portion.

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