Bone tumor puncture sampling anti-leakage device
By designing an anti-leakage device for soft tissue protective cannula and tumor sampling occlusion device, the problem of large trauma and tissue fluid overflow in traditional bone tumor aspiration sampling methods is solved, and the effect of low trauma and effective tissue fluid is achieved, reducing the risk of cancer cell metastasis.
Patent Information
- Application Number
- CN202421875121.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-05
AI Technical Summary
Traditional bone tumor aspiration sampling methods have problems such as heavy trauma and difficult to control over tumor tissue fluid after sampling, resulting in tissue fluid flow into muscle and lymphatic tissue, increasing the risk of cancer cell metastasis.
An anti-leakage device including a soft tissue protective cannula and a tumor sampling occluder was designed. The soft tissue protective casing protects the muscle space through blunt separation. After sampling, the tumor sampling occluder seals the passage by injecting bone cement to prevent tissue fluid from leaking.
It achieves a small wound, prevents tumor tissue fluid from overflowing during sampling, and effectively blocks tissue fluid after sampling, reducing the risk of cancer cell metastasis.
Smart Images
Figure CN223009172U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a leakage prevention device, in particular to a leakage prevention device suitable for bone tumor puncture sampling. Background Technique
[0002] Both primary bone tumors and metastatic bone tumors are common diseases of bone tumors. It is necessary to puncture the bone tumor and take a small amount of tissue from the diseased part of the patient to make a pathological section. By observing the morphology of tumor cells and tissue structure, it is the main means to distinguish malignant tumors and benign tumors.
[0003] In traditional sampling puncture surgery, since the specific location of the bone tumor cannot be accurately positioned, a relatively large incision is usually made on the skin, a bone drill is used to drill holes in the medullary cavity or vertebral body, and tissue forceps or sampling forceps are used to grab the tumor tissue to complete the puncture sampling. However, this puncture sampling method has many problems, such as large sampling trauma; there are problems such as bleeding and tissue fluid exudation in the tumor tissue after sampling. When the amount of blood and tissue fluid exudation is large and the suction device cannot effectively remove it, it will cause the tissue fluid to flow into the muscle and lymph tissue, which is likely to cause cancer cell metastasis and other problems. Summary of the Invention
[0004] The purpose of the utility model is to provide a bone tumor puncture sampling leakage prevention device with a small wound, which can prevent the overflow of tumor tissue fluid during the sampling process and can effectively block the tumor tissue fluid after sampling.
[0005] In order to achieve the above purpose, the technical solution of the utility model is: a bone tumor puncture sampling leakage prevention device, the innovation of which lies in: including a soft tissue protection sleeve for blunt separation of the muscle space, and a tumor sampling plugging device for establishing a sampling closed area in the sampling cavity.
[0006] The distal end of the soft tissue protection sleeve is provided with an inner cavity channel for accommodating the tumor sampling plugging device, and the inner cavity channel and the soft tissue protection sleeve have the same axis. The tumor sampling plugging device is detachably connected to the soft tissue protection sleeve, and the inside of the tumor sampling plugging device has a plugging channel for injecting bone cement after sampling to prevent the spread of bone tumors caused by tissue fluid leakage.
[0007] An annular space is formed between the outer periphery of a partial section of the tumor sampling plugging device and the inner cavity channel of the soft tissue protection sleeve.
[0008] In the above technical solution, the head of the tumor sampling plugging device is provided with a self-tapping self-drilling head for reducing the operations of drill bit drilling and tap threading.
[0009] In the above technical solution, the tumor sampling plugging device includes an operation section and a screwing section that are integrally connected and arranged coaxially. The operation section is connected to the inner cavity channel of the soft tissue protection sleeve. The outer circumference of the operation section is provided with an external thread that forms a connection with the inner cavity channel of the soft tissue protection sleeve, and the inner hole of the operation section is a hexagon socket for use with a hollow screwdriver. The internal part of the screwing section has a plugging channel that communicates with the hexagon socket.
[0010] In the above technical solution, the outer diameter of the operation section is greater than the outer diameter of the screwing section, and an annular space is formed between the outer circumference of the screwing section and the inner cavity channel of the soft tissue protection sleeve.
[0011] In the above technical solution, the external thread of the operation section is a fine thread that reduces the connection gap between the tumor sampling plugging device and the soft tissue protection sleeve, and the external thread of the screwing section is a T-shaped thread that reduces the compression on the bone cortex to prevent bone fracture during screwing.
[0012] In the above technical solution, a self-tapping self-drilling bit is provided at the head of the screwing section and outside the external thread.
[0013] In the above technical solution, the operation section is integrally connected to the screwing section through a connecting section, and the outer circumference of the connecting section has an annular groove.
[0014] In the above technical solution, the self-tapping self-drilling bit has a guiding inclined surface.
[0015] In the above technical solution, the thread angle of the screwing section is 2 - 5°.
[0016] The positive effect of the present utility model is that after adopting the bone tumor puncture sampling anti-leakage device of the present utility model, since the present utility model includes a soft tissue protection sleeve for blunt separation of the muscle space and a tumor sampling plugging device for establishing a sampling closed area in the sampling cavity,
[0017] The distal end of the soft tissue protection sleeve is provided with an inner cavity channel for accommodating the tumor sampling plugging device, and the inner cavity channel is coaxial with the soft tissue protection sleeve. The tumor sampling plugging device is detachably connected to the soft tissue protection sleeve, and the inside of the tumor sampling plugging device has a plugging channel for injecting bone cement after sampling to prevent the leakage of tissue fluid and the spread of bone tumors.
[0018] An annular space is formed between the outer circumference of a partial section of the tumor sampling plugging device and the inner cavity channel of the soft tissue protection sleeve;
[0019] In the specific operation process of the present utility model, a guide needle is used to accurately locate the position of the bone tumor under the guidance of an X-ray machine in advance. The guide needle is inserted into the bone, near the position of the tumor to be sampled (the bone needle does not enter the bone tumor). After making an incision, the soft tissue protection sleeve is placed. The advantage of this is that it can reduce the length of the soft tissue incision.
[0020] The soft tissue protection sleeve bluntly separates the muscle space along the guide needle. All sampling operations are carried out within the soft tissue protection sleeve. While avoiding damage to the soft tissue, it also confines the tumor tissue fluid within the protection sleeve, preventing the occurrence of tumor cell metastasis caused by the exudation of tumor tissue fluid due to untimely or incomplete aspiration. Then, a tumor sampling plugging device is implanted into the soft tissue protection sleeve. Using a screwdriver, the tumor sampling plugging device is screwed along the guide needle and fixed on the sampled bone. At this time, the distal port of the soft tissue protection sleeve abuts against the bone end face. The doctor performs tumor sampling within the plugging channel of the tumor sampling plugging device. After sampling is completed, bone cement is used to seal the plugging channel of the tumor sampling plugging device to prevent the backflow of bone tumor tissue fluid. Finally, the soft tissue protection sleeve 1 is rotated to separate it from the tumor sampling plugging device 2, and the tumor sampling plugging device 2 is fixed on the sampled bone.
[0021] Therefore, the utility model has the advantages of a small wound, preventing the overflow of tumor tissue fluid during the sampling process, and being able to effectively seal the tumor tissue fluid after sampling. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic structural diagram of a specific embodiment of the utility model;
[0023] Figure 2 is a schematic structural diagram of the tumor sampling plugging device of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following will further illustrate the utility model in conjunction with the accompanying drawings and the given embodiments, but it is not limited thereto.
[0025] As Figure 1 , 2 shown, a bone tumor puncture sampling anti-leakage device includes a soft tissue protection sleeve 1 for bluntly separating the muscle space, and a tumor sampling plugging device 2 for establishing a sampling closed area within the sampling cavity.
[0026] The distal end of the soft tissue protection sleeve 1 is provided with an inner cavity channel for accommodating the tumor sampling plugging device 2, and this inner cavity channel is coaxial with the soft tissue protection sleeve 1. The tumor sampling plugging device 2 is detachably connected to the soft tissue protection sleeve 1, and the inside of the tumor sampling plugging device 2 has a plugging channel 21 for injecting bone cement after sampling to implement plugging to prevent the leakage of tissue fluid and cause the spread of bone tumors.
[0027] An annular space 3 is formed between the outer periphery of a partial section of the tumor sampling plugging device 2 and the inner cavity channel of the soft tissue protection sleeve 1.
[0028] As Figure 2As shown in the figure, in order to facilitate the rapid positioning and fixation of the tumor sampling plugging device on the sampled bone, the self-tapping and self-drilling head does not require drilling with a bone drill, and at the same time reduces the two operations of drilling with a drill bit and tapping with a tap, improving the efficiency of the puncture operation. The head of the tumor sampling plugging device 2 is provided with a self-tapping and self-drilling head 22 that reduces the operations of drilling with a drill bit and tapping with a tap. Specifically, the self-tapping and self-drilling head 22 is provided at the head of the screwing section 24 and outside the external thread.
[0029] As Figure 2 As shown in the figure, the utility model is not only convenient to connect with the protection sleeve, but also can self-tap and self-drill, reducing the operation steps and improving the puncture efficiency, making the structure more reasonable. The tumor sampling plugging device 2 includes an operating section 23 that is integrally connected and arranged coaxially and a screwing section 24 that forms a connection with the sampling cavity. The outer periphery of the operating section 23 is provided with an external thread that forms a connection with the inner cavity channel of the soft tissue protection sleeve 1, and the inner hole of the operating section 23 is an internal hexagonal hole that is used in cooperation with a hollow screwdriver. The inside of the screwing section 24 has a plugging channel 21 that communicates with the internal hexagonal hole.
[0030] As Figure 1 As shown in the figure, the outer diameter of the operating section 23 is larger than the outer diameter of the screwing section 24, and an annular space 3 is formed between the outer periphery of the screwing section 24 and the inner cavity channel of the soft tissue protection sleeve 1. The advantage of this design is that the inner hole diameter at the head end of the operating section 23 of the soft tissue protection sleeve 1 is relatively large, and the tumor sampling plugging device 2 can be completely accommodated. When inserting into the soft tissue along the guide needle, it can prevent the cutting of the soft tissue by the cutting edge and thread part of the self-tapping and self-drilling of the tumor sampling plugging device 2, thereby better protecting the soft tissue.
[0031] As Figure 2 As shown in the figure, in order to make the connection gap between the plugging device and the soft tissue sleeve smaller, improve the sealing performance after the assembly of the two, and reduce the possibility of leakage, the external thread of the operating section 32 is a fine thread that reduces the connection gap between the tumor sampling plugging device 2 and the soft tissue protection sleeve 1, and the external thread of the screwing section 24 is a T-shaped thread that reduces the compression on the bone cortex and prevents bone fracture during screwing, increasing the contact area between the bone and the plugging device and preventing the exudation of tumor tissue fluid.
[0032] As Figure 2As shown, the operation section 23 is integrally connected to the screwing section 24 through the connecting section 25, and the outer periphery of the connecting section 25 has an annular groove 26. The advantage of this design is that the connecting section 25 and the screwing section 24 are integrally connected, making it more convenient and accurate to position and sample along the guide needle 5. After the tumor sampling plugging device 2 is screwed into the bone along the guide needle 5, the hollow screwdriver 4 is removed, and then the instrument can be used for tumor sampling operation, which is convenient and fast. At the same time, the outer peripheral annular groove of the operation section 23 matches the inner peripheral annular groove of the soft tissue sleeve 1, so that they can be implanted along the guide needle at the same time, simplifying the operation; the annular groove can also provide a certain sealing performance to ensure that the tissue fluid does not leak outside the soft tissue sleeve after the sampled tumor ruptures.
[0033] As Figure 2 shown, in order to improve the sealing performance and fixing stability between the tumor sampling plugging device and the bone, the self-tapping drill bit 22 has a guiding inclined surface.
[0034] Furthermore, in order to gradually apply pressure during the screwing process of the plugging device and improve the sealing performance between the plugging device and the bone, the thread angle of the screwing section 24 is 2-5°.
[0035] In the specific operation process of the present utility model, the position of the bone tumor is accurately positioned in advance by using the guide needle 5 under the guidance of an X-ray machine, and the guide needle is driven into the bone, near the position of the tumor to be sampled (the bone needle does not enter the bone tumor). After making an incision, the soft tissue protection sleeve 1 is placed. The advantage of doing this is that it can reduce the length of the soft tissue incision.
[0036] The soft tissue protection sleeve 1 performs blunt separation of the muscle space along the guide needle 5, and all sampling operations are carried out in the soft tissue protection sleeve. While avoiding damage to the soft tissue, it also confines the tumor tissue fluid in the protection sleeve, preventing the occurrence of tumor cell metastasis caused by the exudation of tumor tissue fluid due to untimely and incomplete suction. Then, the tumor sampling plugging device 2 is implanted into the soft tissue protection sleeve 1, and the tumor sampling plugging device 2 is screwed along the guide needle 5 by using the screwdriver 4. Since the head of the tumor sampling plugging device 2 is of the self-tapping drill bit 22 structure, it can be fixed on the sampled bone by using the thread. At this time, the distal port of the soft tissue protection sleeve abuts against the bone end face, and the doctor performs tumor sampling in the plugging channel of the tumor sampling plugging device 2. After sampling is completed, the plugging channel of the tumor sampling plugging device is sealed with bone cement to prevent the backflow of bone tumor tissue fluid. Finally, the soft tissue protection sleeve 1 is rotated to separate it from the tumor sampling plugging device 2, and the tumor sampling plugging device 2 is fixed on the sampled bone.
[0037] Therefore, the present utility model has the advantages of a small wound, preventing the overflow of tumor tissue fluid during the sampling process, and effectively plugging the tumor tissue fluid after sampling.
[0038] Taking the above-described ideal embodiments of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A bone tumor puncture sampling anti-leakage device, characterized in that: The invention comprises a soft tissue protection sleeve (1) for performing blunt separation of the intermuscular space, and a tumor sampling occluder (2) for establishing a closed sampling area in the sampling cavity. The distal end of the soft tissue protection sleeve (1) is provided with an inner cavity channel for accommodating the tumor sampling occluder (2), and the inner cavity channel is coaxial with the soft tissue protection sleeve (1). The tumor sampling occluder (2) is detachably connected to the soft tissue protection sleeve (1), and the interior of the tumor sampling occluder (2) is provided with a blocking channel (21) for injecting bone cement after sampling to implement blocking to prevent tissue fluid leakage and bone tumor spread. An annular space (3) is formed between the outer periphery of a portion of the tumor sampling occluder (2) and the inner cavity channel of the soft tissue protection sleeve (1).
2. The anti-leakage device for bone tumor puncture sampling according to claim 1, characterized in that: The head of the tumor sampling occluder (2) is provided with a self-drilling bit (22) which reduces the drilling and tapping operations of a drill bit.
3. The anti-leakage device for bone tumor puncture sampling according to claim 1, characterized in that: The tumor sampling occluder (2) comprises an operating section (23) which is connected as one body and arranged coaxially, and a screwing section (24) which is connected to a sampling cavity. The outer periphery of the operating section (23) is provided with an external thread which is connected to the inner cavity channel of the soft tissue protection sleeve (1), and the inner hole of the operating section (23) is an inner hexagonal hole used in conjunction with a hollow screwdriver. The screwing section (24) has a sealing channel (21) which is connected to the inner hexagonal hole.
4. The anti-leakage device for bone tumor puncture sampling according to claim 3, characterized in that: The outer diameter of the operating section (23) is greater than the outer diameter of the screwing section (24), and an annular space (3) is formed between the outer periphery of the screwing section (24) and the inner cavity channel of the soft tissue protection sleeve (1).
5. The anti-leakage device for bone tumor puncture sampling according to claim 3, characterized in that: The external thread of the operating section (23) is a fine thread that reduces the connection gap between the tumor sampling occluder (2) and the soft tissue protection sleeve (1), and the external thread of the screwing section (24) is a T-shaped thread that reduces pressure on the bone cortex and prevents bone fractures when screwing in.
6. The anti-leakage device for bone tumor puncture sampling according to claim 3, characterized in that: A self-drilling bit (22) is provided at the head of the screwing section (24) and located outside the external thread.
7. The anti-leakage device for bone tumor puncture sampling according to claim 3, characterized in that: The operating section (23) is connected to the screwing section (24) via a connecting section (25), and the outer circumference of the connecting section (25) is provided with an annular groove (26).
8. The anti-leakage device for bone tumor puncture sampling according to claim 2, characterized in that: The self-drilling and self-tapping bit (22) has a guiding bevel.
9. The anti-leakage device for bone tumor puncture sampling according to claim 5, characterized in that: The thread angle of the screwing section (24) is 2-5°.