A percutaneous puncture treatment device

Abstract

This application discloses a percutaneous puncture treatment device, comprising: a puncture needle, a trephine saw, a dilator, and a guide wire. The puncture needle is used to locate and insert into the surgical site and includes a puncture needle tube. The trephine saw is used to cut the tissue to be removed. The dilator is used to dilate the wound at the surgical site and guide the trephine saw into the wound. The guide wire is used to insert the puncture needle tube and guide the dilator tube into the surgical site. The trephine saw includes a cutting tube with serrations at the first end and a handle at the second end. The puncture needle and guide wire work together to ensure accurate instrument entry path, reducing blind operation. The dilator gradually expands the tissue rather than cutting, reducing the risk of trauma and bleeding. This design can accurately locate the surgical site, reduce the size of the wound, reduce harm to the patient's body, and effectively improve the success rate of the surgery.

Description

Technical Field

[0001] This application relates to the field of percutaneous puncture technology, and in particular to a percutaneous puncture treatment device. Background Technology

[0002] Percutaneous biopsy is a minimally invasive medical technique that involves precisely inserting a needle or catheter through the skin to a target site within the body for diagnostic sampling, treatment, or interventional procedures. Its core advantages lie in its minimal trauma, high precision, and rapid recovery, and it is widely used in fields such as biopsy, drainage, and tumor ablation. Percutaneous biopsy is performed under medical image guidance (such as ultrasound, CT, or X-ray) to insert a puncture instrument through the skin to reach the lesion or target area. Its principle is based on real-time image localization, avoiding important blood vessels, nerves, or organs to complete the procedure with minimal damage.

[0003] When patients suffer from osteomyelitis, bone tumors, or other conditions causing localized bone necrosis, it is usually necessary to remove the necrotic bone tissue. Traditional orthopedic surgery typically involves making incisions in the skin and flesh at the affected area with a scalpel before removing the necrotic bone. This surgical approach leaves a large incision, causing significant harm to the patient and resulting in a slower recovery. Therefore, percutaneous puncture treatment devices can greatly reduce this harm to the patient. Utility Model Content

[0004] The main objective of this application is to propose a percutaneous puncture treatment device that aims to address the problem of significant harm to patients caused by existing bone resection surgeries.

[0005] To achieve the above objectives, the percutaneous puncture treatment device proposed in this application includes: A puncture needle is used to locate and insert into a surgical site, including the puncture needle tube; A trephine saw is used to cut tissue that needs to be removed. An expansion tube is used to expand the surgical site wound and guide the trephine into the wound; A guidewire is used to insert the puncture needle and guide the dilation tube into the surgical site. The ring saw includes a cutting tube, with saw teeth at the first end and a handle at the second end.

[0006] Optionally, the puncture needle includes a needle body and a hand-held block that are fixedly connected to each other, and a conical guide hole is provided in the hand-held block corresponding to the needle body.

[0007] Optionally, the puncture needle further includes a puncture liner, which includes a needle shaft and a connecting block that are fixedly connected to each other. The needle shaft is used to insert into the needle tube body, and the connecting block is used to connect with the hand-held block.

[0008] Optionally, the handheld block is provided with a ring-shaped distribution of limiting plates, and the limiting plates are provided with slots. A card block is fixedly connected to the connecting block at the slot, and the card block is used to be inserted into the slot.

[0009] Optionally, two limiting protrusions are symmetrically arranged on the hand block, and limiting grooves are formed on the connecting block corresponding to the limiting protrusions.

[0010] Optionally, multiple markings are provided on the outer side of the needle body along the needle axis.

[0011] Optionally, the hand-held block is provided with an arc-shaped and concave hand-held portion, and the outer side of the hand-held portion is provided with anti-slip protrusions.

[0012] Optionally, the guide wire is a circular strip structure made of nickel-titanium alloy, and both ends of the guide wire are provided with conical spikes.

[0013] Optionally, the expansion tube is a circular tubular structure made of stainless steel, and a conical expansion surface is provided on the outer side of one end of the expansion tube.

[0014] Optionally, the handle includes multiple hand levers evenly distributed circumferentially, the center of the handle is fixedly connected to the cutting tube, and the handle has a through hole coaxial with the cutting tube, the through hole communicating with the interior of the cutting tube.

[0015] This application's technical solution comprises a puncture needle, a ring saw, a dilator, and a guide wire. The puncture needle is used to locate and insert into the surgical site and includes a puncture needle tube. The ring saw is used to cut the tissue to be removed. The dilator is used to dilate the wound at the surgical site and guide the ring saw into the wound. The guide wire is used to insert the puncture needle tube and guide the dilator into the surgical site. The ring saw includes a cutting tube with serrations at its first end and a handle at its second end. First, the puncture needle is held and inserted into the surgical site through the puncture needle tube to complete the positioning. Then, the guide wire is inserted into the puncture needle tube and guided along its path to the surgical site. Subsequently, the puncture needle is withdrawn, leaving the guide wire in place. Next, the dilator is inserted along the guide wire to dilate the surgical site wound, creating space for the ring saw to enter. Finally, the ring saw is inserted through the dilated wound along the dilator tube, and the cutting tube is operated using the handle to cut the tissue to be removed using the serrations. The puncture needle and guidewire work together to ensure accurate instrument entry, reduce blind operation, and the dilator gradually expands the tissue instead of cutting it, reducing the risk of trauma and bleeding. This design can accurately locate the surgical site, reduce the size of the incision, reduce harm to the patient's body, and effectively improve the success rate of the operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the puncture needle in the percutaneous puncture treatment device of this application; Figure 2 This is a schematic diagram of the guidewire and dilator in the percutaneous puncture treatment device of this application; Figure 3 This is a schematic diagram of the front view of the ring saw in the percutaneous puncture treatment device of this application; Figure 4 This is a top view of the ring saw in the percutaneous puncture treatment device of this application.

[0018] Explanation of icon numbers: 1. Puncture needle; 2. Puncture needle tube; 210. Needle tube body; 211. Marking; 220. Handle block; 221. Guide hole; 222. Limiting plate; 223. Slot; 224. Limiting protrusion; 225. Handle; 226. Anti-slip protrusion; 3. Puncture liner; 310. Needle bar; 320. Connecting block; 321. Locking block; 322. Anti-slip texture; 4. Ring saw; 410. Cutting tube; 411. Saw teeth; 420. Handle; 421. Through hole; 5. Guide wire; 501. Spike; 6. Dilatation tube; 601. Dilatation surface.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0024] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0025] When patients suffer from osteomyelitis, bone tumors, or other conditions causing localized bone necrosis, it is usually necessary to remove the necrotic bone tissue. Traditional orthopedic surgery typically involves cutting open the skin and flesh at the affected area with a scalpel before removing the necrotic bone. This method leaves a large incision, causing significant harm to the patient and resulting in a slower recovery. Therefore, percutaneous puncture treatment devices can greatly reduce this harm to the patient.

[0026] In view of this, this application proposes a percutaneous puncture treatment device.

[0027] In the embodiments of this application, reference is made to Figures 1 to 4 The aforementioned percutaneous puncture treatment device includes: Puncture needle 1, used to locate and insert into the surgical site, including puncture needle tube 2; Ring saw 4, used to cut the tissue to be removed; The dilator 6 is used to dilate the surgical site wound and guide the trephine 4 into the wound; Guide wire 5 is used to insert puncture needle 2 and guide dilation tube 6 into the surgical site; The ring saw 4 includes a cutting tube 410, with saw teeth 411 at the first end and a handle 420 at the second end.

[0028] Specifically, when using this device, first, hold the puncture needle 1 and insert it into the surgical site through the puncture needle tube 2 to complete the positioning; then, insert the guide wire 5 into the puncture needle tube 2 and guide it to the surgical site along the path of the puncture needle tube 2, then remove the puncture needle 1, leaving the guide wire 5; next, insert the dilation tube 6 along the guide wire 5 to dilate the surgical site wound, creating space for the ring saw 4 to enter; finally, insert the ring saw 4 through the dilated wound along the dilation tube 6, and operate the cutting tube 410 through the handle 420, using the saw teeth 411 to cut the tissue to be removed. After the puncture needle 1 is positioned and punctured, the guide wire 5 acts as a "track" to guide the dilation tube 6 and the ring saw 4, ensuring that subsequent instruments enter accurately along the preset path; the dilation tube 6 physically opens the wound, reducing tissue damage, while providing sufficient operating space for the ring saw 4; the saw teeth 411 of the ring saw 4 cut the tissue through rotation or reciprocating motion, and the handle 420 provides the operating fulcrum.

[0029] It should be noted that this device is used with the assistance of fluoroscopic imaging equipment. The fluoroscopic imaging equipment can show the position and depth of the instrument insertion, ensuring the accuracy of the surgical site and improving the success rate of the surgery. Fluorescent imaging equipment mainly includes X-ray machines, CT machines, MRI, etc.

[0030] To reduce the risk of hospital-acquired infections, the puncture needle 1, trephine 4, dilator 6, and guide wire 5 are all disposable. During the operation, they can be used directly after opening the sealed packaging. After the operation, they are directly destroyed, which effectively reduces the risk of hospital-acquired infections and reduces the process of sterilizing the above devices, thereby improving the efficiency of the operation.

[0031] In other embodiments, multiple dilators 6 can be provided, and are divided into: primary dilators 6, secondary dilators 6, tertiary dilators 6, etc., with the diameter of the dilators 6 increasing progressively. When dilating the wound, the primary dilator 6 is first inserted along the guide wire 5, then the secondary dilator 6 is inserted along the primary dilator 6, and then the tertiary dilator 6 is inserted, etc., in this way the wound is gradually enlarged. When the wound is dilated to the point where the ring saw 4 can be inserted, the outer dilators 6 are removed step by step, leaving only the primary dilator 6 to guide the insertion of the ring saw 4.

[0032] In this embodiment, the puncture needle tube 2 includes a needle tube body 210 and a handheld block 220 that are fixedly connected to each other. A conical guide hole 221 is provided in the handheld block 220 corresponding to the needle tube body 210. When the needle tube body 210 of the puncture needle tube 2 is inserted into the tissue, the guide hole 221 of the handheld block 220 provides initial guidance for the guide wire 5, ensuring that the guide wire 5 can be quickly aligned and smoothly inserted along the needle tube axis; reducing insertion resistance and the risk of deviation, and improving puncture efficiency.

[0033] In this embodiment, the puncture needle 1 also includes a puncture liner 3. The puncture liner 3 includes a needle rod 310 and a connecting block 320 that are fixedly connected to each other. The needle rod 310 is used to insert into the needle tube body 210, and the connecting block 320 is used to connect with the hand-held block 220. The needle rod 310 of the puncture liner 3 is inserted into the needle tube body 210 to form a complete puncture structure with the needle tube body 210, which enhances the rigidity of the puncture needle 1, avoids needle tube deformation during puncture, ensures effective transmission of puncture force, and facilitates tissue penetration. After puncture, the puncture liner 3 is pulled out (the connecting block 320 is separated from the hand-held block 220), leaving an internal channel in the needle tube body 210 for inserting the guide wire 5, so that the same puncture needle tube 2 can be used for puncture and guide wire 5 guidance successively, reducing the number of instruments.

[0034] In this embodiment, the handheld block 220 is provided with a ring-shaped limiting plate 222, and the limiting plate 222 is provided with a slot 223. The connecting block 320 is fixedly connected with a locking block 321 corresponding to the slot 223. The locking block 321 is used to be inserted into the slot 223. When the needle bar 310 is inserted into the puncture needle tube 2, the locking block 321 of the connecting block 320 is aligned with the slot 223 of the limiting plate 222 of the handheld block 220. The connecting block 320 is rotated or pushed so that the locking block 321 is embedded in the slot 223, fixing the puncture liner 3. The geometric cooperation between the slot 223 and the locking block 321 is used to achieve quick fixation. The locking structure ensures that the liner and the needle tube will not rotate or fall off on their own during the puncture process, improving safety.

[0035] In this embodiment, two limiting protrusions 224 are symmetrically arranged on the handheld block 220, and limiting grooves (not shown in the figure) are provided on the connecting block 320 at the corresponding limiting protrusions 224. When installing the puncture liner 3, the limiting groove of the connecting block 320 is aligned with the limiting protrusion 224 of the handheld block 220 to ensure that the liner and the needle body 210 are coaxial, avoid rotational offset, avoid the liner rotation causing the needle bar 310 to be skewed, reduce the alignment difficulty during installation, and improve assembly efficiency.

[0036] In this embodiment, multiple marks 211 are provided on the outer side of the needle body 210 along the needle axis. During puncture, the puncture depth is determined by observing the marks 211 (equivalent to scale lines) on the outer side of the needle body 210. The marks 211 serve as a depth reference to help doctors control the distance of the puncture needle 1 into the tissue, avoid puncturing too deeply or too shallowly, and reduce the risk of damaging surrounding tissues or organs.

[0037] In this embodiment, the hand-held block 220 is provided with an arc-shaped and concave hand-held part 225, and the outer side of the hand-held part 225 is provided with anti-slip protrusions 226. When the doctor holds the arc-shaped and concave hand-held part 225 of the hand-held block 220, the anti-slip protrusions 226 increase the friction between the hand and the hand-held part 225, ensuring stable force during puncture, reducing puncture shaking or deviation caused by hand slippage, and improving positioning accuracy.

[0038] Specifically, the outer side of the connecting block 320 is also provided with anti-slip texture 322 to increase the friction between the connecting block 320 and the hand, and prevent slippage when the liner is inserted or withdrawn from the syringe.

[0039] In this embodiment, the guidewire 5 is a circular strip structure made of nickel-titanium alloy. Nickel-titanium alloy has a memory effect and bending resistance, ensuring that the guidewire 5 does not break or deform in complex paths. Both ends of the guidewire 5 are provided with conical spikes 501. The guidewire 5 can easily penetrate tissue or insert needles through the spikes 501 at both ends. The superelasticity of nickel-titanium alloy allows it to maintain its shape in curved paths, guiding subsequent instruments to advance smoothly along the guidewire 5.

[0040] In this embodiment, the expansion tube 6 is a circular tubular structure made of stainless steel. A conical expansion surface 601 is provided on the outer side of one end of the expansion tube 6. When the expansion tube 6 is inserted along the guide wire 5, the conical surface generates radial expansion force through axial advancement, gradually opening the incision. The stainless steel material provides sufficient rigidity to push the tissue open. Non-cutting expansion reduces vascular and nerve damage, and reduces postoperative pain and complications.

[0041] In this embodiment, the handle 420 includes multiple hand levers evenly distributed circumferentially. The center of the handle 420 is fixedly connected to the cutting tube 410. A through hole 421 coaxial with the cutting tube 410 is provided on the handle 420, and the through hole 421 communicates with the interior of the cutting tube 410. The doctor holds the multiple hand levers and rotates or swings the handle 420 to drive the saw teeth 411 of the cutting tube 410 to rotate, performing a circular cut on the tissue. The through hole 421 allows the guide wire 5 or irrigation fluid to pass through, realizing simultaneous "cutting + guidance / irrigation" operation, which is convenient for intraoperative guidance or cleaning of debris. In addition, the endoscopic device (scope) can also be inserted into the surgical site through the through hole and the cutting tube to facilitate observation of the cutting situation, ensure cutting accuracy, and reduce the possibility of errors.

[0042] In other embodiments, the handle 420 and the cutting tube 410 are connected by a detachable structure, such as a plug-in connection or a snap-fit ​​connection. This allows the cutting tube 410, which comes into direct contact with the human body, to be used only once, while the handle 420 can be reused multiple times. This reduces the risk of hospital-acquired infections, minimizes equipment waste, and lowers surgical costs.

[0043] This application discloses a percutaneous puncture treatment device, mainly used in spinal surgery. The specific operation method is as follows: [1] First, insert the tip of the puncture needle at a 45° angle to the patient’s skin. As the puncture needle pierces the soft tissue, it enters the spine along with the puncture needle cannula, but does not enter the spinal canal. [2] Remove the puncture needle and use a guide wire to pass through the puncture needle tube until it reaches the spine, without entering the spinal canal; [3] Remove the puncture needle cannula, use the guide wire for positioning and guidance, and use the dilator to further dilate the spinal canal outside the guide wire without entering the spinal canal; [4] The working dilator in the endoscopic surgical kit is used for further dilation. The dilator is then removed to establish a working channel for the surgery. [5] If nerve compression occurs during spinal surgery, after using the working dilator, insert a trephine saw into the working dilator to remove excess bone tissue, expand and maintain the surgical access, and perform the surgery.

[0044] This application's technical solution comprises a puncture needle, a ring saw, a dilator, and a guide wire. The puncture needle is used to locate and insert into the surgical site and includes a puncture needle tube. The ring saw is used to cut the tissue to be removed. The dilator is used to dilate the wound at the surgical site and guide the ring saw into the wound. The guide wire is used to insert the puncture needle tube and guide the dilator into the surgical site. The ring saw includes a cutting tube with serrations at its first end and a handle at its second end. First, the puncture needle is held and inserted into the surgical site through the puncture needle tube to complete the positioning. Then, the guide wire is inserted into the puncture needle tube and guided along its path to the surgical site. Subsequently, the puncture needle is withdrawn, leaving the guide wire in place. Next, the dilator is inserted along the guide wire to dilate the surgical site wound, creating space for the ring saw to enter. Finally, the ring saw is inserted through the dilated wound along the dilator tube, and the cutting tube is operated using the handle to cut the tissue to be removed using the serrations. The puncture needle and guidewire work together to ensure accurate instrument entry, reduce blind operation, and the dilator gradually expands the tissue instead of cutting it, reducing the risk of trauma and bleeding. This design can accurately locate the surgical site, reduce the size of the incision, reduce harm to the patient's body, and effectively improve the success rate of the operation.

[0045] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A percutaneous puncture treatment device, characterized in that, include: A puncture needle is used to locate and insert into a surgical site, including the puncture needle tube; A trephine saw is used to cut tissue that needs to be removed. An expansion tube is used to expand the surgical site wound and guide the trephine into the wound; A guidewire is used to insert the puncture needle and guide the dilation tube into the surgical site. The ring saw includes a cutting tube, with saw teeth at the first end and a handle at the second end.

2. The percutaneous puncture treatment device as described in claim 1, characterized in that, The puncture needle includes a needle body and a hand-held block that are fixedly connected to each other. A conical guide hole is provided in the hand-held block corresponding to the needle body.

3. The percutaneous puncture treatment device as described in claim 2, characterized in that, The puncture needle also includes a puncture liner, which includes a needle shaft and a connecting block that are fixedly connected to each other. The needle shaft is used to insert into the needle tube body, and the connecting block is used to connect with the hand-held block.

4. The percutaneous puncture treatment device as described in claim 3, characterized in that, The handheld block is provided with a ring-shaped distribution of limiting plates, and the limiting plates are provided with slots. The connecting block is fixedly connected with a card block corresponding to the slot, and the card block is used to be inserted into the slot.

5. The percutaneous puncture treatment device as described in claim 3 or 4, characterized in that, The handheld block has two symmetrically arranged limiting protrusions, and the connecting block has limiting grooves at the corresponding limiting protrusions.

6. The percutaneous puncture treatment device as described in claim 2, characterized in that, Multiple markings are provided on the outer side of the needle body along the needle axis.

7. The percutaneous puncture treatment device as described in claim 2, characterized in that, The hand-held block is provided with an arc-shaped and concave hand-held part, and the outer side of the hand-held part is provided with anti-slip protrusions.

8. The percutaneous puncture treatment device as described in claim 1, characterized in that, The guide wire is a circular strip structure made of nickel-titanium alloy, and both ends of the guide wire are provided with conical spikes.

9. The percutaneous puncture treatment device as described in claim 1, characterized in that, The expansion tube is a circular tubular structure made of stainless steel, and a conical expansion surface is provided on the outer side of one end of the expansion tube.

10. The percutaneous puncture treatment device as described in claim 1, characterized in that, The handle includes multiple hand levers that are evenly distributed circumferentially. The center of the handle is fixedly connected to the cutting tube. The handle has a through hole that is coaxial with the cutting tube and communicates with the interior of the cutting tube.

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