Biopsy needle with safety structure

Abstract

The utility model discloses a biopsy needle with a safety structure, which relates to the technical field of medical instruments and comprises a live safety needle component and a safety sleeve component arranged at one end of the live safety needle component, a handle component is arranged at one end of the live safety needle component, and the live safety needle component comprises an outer needle sheath and an inner needle core arranged at one end of the outer needle sheath. The inner needle core can be in sliding fit with the outer needle sheath, an outer threaded column is arranged at the end, away from the inner needle core, of the outer needle sheath, the handle assembly comprises a threaded cavity base in threaded connection to one end of the outer threaded column, a cavity rod is arranged at the upper end of the threaded cavity base, and a mounting rod is connected to an inner cavity of the cavity rod in a clamped mode. One side of the threaded cavity seat is fixedly connected with a fixing block component, one side of the live danger needle assembly is protected through the safety sleeve assembly, the situations that the live danger needle assembly is polluted when not used and the needle head end hurts a medical patient are avoided, the live danger needle assembly and the safety sleeve assembly are convenient to separate and install, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a biopsy needle with a safety structure. Background Art

[0002] A biopsy needle is a medical device used for sampling living tissue and aspirating cells from cone tumors and unknown tumors in various organs such as the kidney, liver, lung, breast, thyroid, prostate, pancreas, testicle, uterus, ovary, and body surface. The operation is safe and reliable, short in time, and quick in recovery. Clinically, when examining cancer patients, in order to determine the nature of the tumor, a biopsy needle is needed to take some living tissue from the diseased area. The rear end of the biopsy needle is provided with a handle suitable for medical staff to hold. The traditional biopsy needle is a fixed mode, and the needle tube itself and the handle are integrated, which is not convenient for the user to disassemble it. The biopsy needle is not easy to recycle and reuse, which will cause material waste.

[0003] On this basis, after searching the patent network, a biopsy needle is disclosed with application number CN107260230A; it can be seen that the above patent has the following shortcomings: the traditional biopsy needle has a relatively simple structure and function, the needle tube component is not provided with a protection function, especially there is no safety structure at one end of the needle. When the biopsy needle is not in use, the needle is easy to cause harm to doctors and patients, and it is easy to cause contamination of the needle tube, reducing the safety and practicality of the device.

[0004] In view of the above problems, a biopsy needle with a safety structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a biopsy needle with a safety structure. The device is used to work, thereby solving the problem that the traditional biopsy needle in the above background has a relatively simple structure and function, the needle tube component has no protection function, especially the needle end has no safety structure. When the biopsy needle is not in use, the needle is easy to cause harm to the doctor and the patient, and the needle tube is easy to be contaminated, reducing the safety and practicality of the device.

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a biopsy needle with a safety structure, comprising a safe needle assembly and a safety condom assembly arranged at one end of the safe needle assembly, a handle assembly is arranged at one end of the safe needle assembly, the safe needle assembly comprises an outer needle sheath and an inner needle core arranged at one end of the outer needle sheath, the inner needle core can slide with the outer needle sheath, an outer needle sheath away from the inner needle core end is provided with an external threaded column, the handle assembly comprises a threaded cavity seat threadedly connected to one end of the external threaded column, a cavity rod is arranged at the upper end of the threaded cavity seat, a mounting rod is snap-connected to the inner cavity of the cavity rod, one end of the mounting rod is fixedly connected to an anti-slip handle block, a fixed block component is fixedly connected to one side of the threaded cavity seat, a mounting cavity groove block is fixedly connected to one side of the fixed block component, the safety condom assembly comprises a protective cavity sleeve arranged on one side of the outer needle sheath, a fixed plate is fixedly connected to one side of the protective cavity sleeve, and a second magnet block is fixedly connected to one side of the threaded cavity seat.

[0007] Preferably, the condom assembly further comprises a support plate fixedly connected to one side of the fixed plate, the support plates are provided in two groups, and a rotating plate is rotatably connected between the two groups of support plates.

[0008] Preferably, a connecting block is fixedly connected to one side of the rotating plate, and a first magnet block is provided on one side of the connecting block.

[0009] Preferably, the first magnet block matches the second magnet block and is magnetically linked.

[0010] Preferably, the handle assembly also includes a forward and reverse screw rod rotatably connected to the inner cavity of the mounting cavity block, one end of the forward and reverse screw rod passes through the mounting cavity block and extends to the outside of the mounting cavity block, and one end of the forward and reverse screw rod is fixedly connected to a knob.

[0011] Preferably, the outer circumference of the positive and negative threaded rod is threadedly connected with a movable plate, and two groups of movable plates are provided. The two groups of movable plates are slidably connected to the inner cavity of the mounting cavity block.

[0012] Preferably, one side of the movable plate passes through the installation cavity block and extends to the outside of the installation cavity block, and one side of the movable plate is fixedly connected with an arc-shaped clamping plate.

[0013] Preferably, the mounting rod is arranged between the two groups of arc-shaped clamping plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model discloses a biopsy needle with a safety structure. The structure and function of the traditional biopsy needle are relatively simple, and the needle tube component is not provided with a protection function, especially the needle end is not provided with a safety structure. When the biopsy needle is not in use, the needle is easy to cause harm to the doctor and the patient. In order to solve the problem of contamination of the biopsy needle and improve the safety and practicality of the biopsy needle, the utility model adds a safety sleeve assembly on one side of the outer needle sheath. When there is no need to use the biopsy needle assembly for sampling, the user immediately sets the protective cavity sleeve on the outer periphery of the outer needle sheath to seal the outer needle sheath and the inner needle core. At this time, the rotating plate is set on one side of the threaded cavity seat, and the rotating plate is rotated so that the rotating plate reverses and drives the first magnet block to move toward the side close to the second magnet block until the second magnet block corresponds to the position of the first magnet block. The first magnet blocks are magnetically connected and fixed to each other, so that the protective cavity sleeve can be better secured to the outer periphery of the live needle assembly, and the live needle assembly can be sealed and protected to prevent it from being contaminated and affecting its use; if the condom assembly needs to be used, the user can flip the rotating plate in the opposite direction to magnetically separate the first magnet block from the second magnet block, and the user can subsequently pull the protective cavity sleeve in a horizontal direction away from the outer needle sheath to remove the protective cavity sleeve from one side of the live needle assembly, and the live needle assembly can be used for sampling. This arrangement protects one side of the live needle assembly through the condom assembly, thereby preventing the live needle assembly from being contaminated when not in use and the needle end from causing harm to the patient, and the live needle assembly and the condom assembly are easy to separate and install, thereby improving the practicality of the device.

[0016] 2. The utility model discloses a biopsy needle with a safety structure. The rear end of the biopsy needle is provided with a handle suitable for medical staff to hold. The traditional biopsy needle is a fixed structure, and the needle tube itself and the handle are integrated, which is not convenient for users to disassemble it. The biopsy needle is not easy to be segmented and recycled and reused, which will cause material waste. The rear end of the biopsy needle assembly of the utility model is provided with a handle assembly, and the anti-slip handle block is a component made of anti-slip material, which is convenient for users to hold and improve the grip stability when using the biopsy needle. The doctor holds the anti-slip handle block in one hand and punctures the biopsy needle assembly into the patient's soft tissue. The inner needle core is positioned before reaching the target position, and the outer needle sheath continues to puncture the soft tissue forward until it reaches the target position. After the outer needle sheath obtains the biopsy tissue at the target position, the tissue sample and the biopsy needle are withdrawn to the outside of the soft tissue by vacuum adsorption, thereby attracting the sample tissue to the active needle assembly for sampling. The active needle sampling principle and steps are existing mature technologies and will not be elaborated in detail here. When it is necessary to recover and disinfect the active needle assembly and the handle assembly in sections, the operator can reversely rotate the threaded cavity seat. The threaded cavity seat is separated from the external threaded column thread, and the handle assembly as a whole can be separated from the active needle assembly. The user can also rotate the knob in the opposite direction, and the knob drives the positive and negative threaded rods to rotate, so that the two sets of movable plates and the arc-shaped clamping plates move away from each other. The two sets of arc-shaped clamping plates give up clamping and fixing the installation rod. The user pulls the anti-slip handle block to the side away from the cavity rod, so that the installation rod is detached from the cavity rod, and the anti-slip handle block is disassembled from the threaded cavity seat, which is convenient for the user to disinfect, maintain and replace the anti-slip handle block. If the anti-slip handle block needs to be re-fixed, the installation The rod is re-engaged and fixed in the inner cavity of the cavity rod. At this time, the installation rod is between the two sets of arc-shaped clamping plates. Turning the knob causes the positive and negative threaded rods to rotate, which drives the two sets of movable plates and the arc-shaped clamping plates to move closer to each other until the two sets of arc-shaped clamping plates re-clamp and fix the installation rod, and the installation of the anti-slip handle block is completed. This arrangement makes the active needle a detachable design, and the user can easily disassemble and install the active needle assembly and the handle assembly. The biopsy needle can be recovered in sections for maintenance work and reused after disinfection to avoid material waste, thereby improving the scope of application of the device and the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the active needle assembly, condom assembly and handle assembly of the utility model;

[0019] Figure 3 This is a structural diagram of the handle assembly of the utility model;

[0020] Figure 4This is a structural diagram of the clamping component of the handle assembly of the utility model;

[0021] Figure 5 This is a structural diagram of the disassembled parts of the condom assembly of the utility model.

[0022] In the figure: 1. active needle assembly; 11. outer needle sheath; 12. inner needle core; 13. external threaded column; 2. condom assembly; 21. protective cavity sleeve; 22. fixing plate; 23. support plate; 24. rotating plate; 25. connecting block; 26. first magnet block; 27. second magnet block; 3. handle assembly; 31. threaded cavity seat; 33. cavity rod; 34. non-slip handle block; 35. mounting rod; 36. fixing block component; 37. knob; 38. mounting cavity slot block; 39. positive and negative threaded rod; 391. moving plate; 392. arc clamping plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0025] Combination Figure 1-5 A biopsy needle with a safety structure comprises a biopsy needle assembly 1 and a safety condom assembly 2 arranged at one end of the biopsy needle assembly 1, a handle assembly 3 is arranged at one end of the biopsy needle assembly 1, the biopsy needle assembly 1 comprises an outer needle sheath 11 and an inner needle core 12 arranged at one end of the outer needle sheath 11, the inner needle core 12 can slide with the outer needle sheath 11, an outer threaded column 13 is arranged at one end of the outer needle sheath 11 away from the inner needle core 12, the handle assembly 3 comprises a threaded cavity seat 31 threadedly connected to one end of the outer threaded column 13, and the thread A cavity rod 33 is provided at the upper end of the cavity seat 31, and a mounting rod 35 is snap-connected to the inner cavity of the cavity rod 33, one end of the mounting rod 35 is fixedly connected to a non-slip handle block 34, one side of the threaded cavity seat 31 is fixedly connected to a fixing block component 36, one side of the fixing block component 36 is fixedly connected to a mounting cavity groove block 38, the condom assembly 2 includes a protective cavity sleeve 21 sleeved on one side of the outer needle sheath 11, one side of the protective cavity sleeve 21 is fixedly connected to a fixing plate 22, and one side of the threaded cavity seat 31 is fixedly connected to a second magnet block 27.

[0026] The utility model is further described below in conjunction with embodiments.

[0027] Example 1

[0028] See also Figure 1-2 and Figure 5 A biopsy needle with a safety structure, the condom assembly 2 also includes a support plate 23 fixedly connected to one side of the fixed plate 22, the support plate 23 is provided with two groups, a rotating plate 24 is rotatably connected between the two groups of support plates 23, a connecting block 25 is fixedly connected to one side of the rotating plate 24, a first magnet block 26 is provided on one side of the connecting block 25, the first magnet block 26 matches the second magnet block 27, and is magnetically linked.

[0029] Example 2

[0030] See also Figure 1-4 A biopsy needle with a safety structure, the handle assembly 3 also includes a forward and reverse screw rod 39 rotatably connected to the inner cavity of the mounting cavity block 38, one end of the forward and reverse screw rod 39 passes through the mounting cavity block 38 and extends to the outside of the mounting cavity block 38, one end of the forward and reverse screw rod 39 is fixedly connected with a knob 37, the outer circumference of the forward and reverse screw rod 39 is threadedly connected with a movable plate 391, and the movable plate 391 is provided with two groups, and the two groups of movable plates 391 are slidably connected to the inner cavity of the mounting cavity block 38, one side of the movable plate 391 passes through the mounting cavity block 38 and extends to the outside of the mounting cavity block 38, one side of the movable plate 391 is fixedly connected with an arc clamping plate 392, and the mounting rod 35 is arranged between the two groups of arc clamping plates 392.

[0031] In summary: the utility model discloses a biopsy needle with a safety structure. The structure and function of the traditional biopsy needle are relatively simple, and the needle tube component is not provided with a protection function, especially there is no safety structure at one end of the needle. When the biopsy needle is not in use, the needle is easy to cause harm to the doctor and the patient. In order to solve the problem of contamination of the biopsy needle and improve the safety and practicality of the biopsy needle, the utility model adds a safety sleeve assembly 2 on one side of the outer needle sheath 11. When there is no need to use the biopsy needle assembly 1 for sampling, the user immediately sleeves the protective cavity sleeve 21 on the outer periphery of the outer needle sheath 11 to seal the outer needle sheath 11 and the inner needle core 12. At this time, the rotating plate 24 is arranged on one side of the threaded cavity seat 31. The rotating plate 24 is rotated so that the rotating plate 24 reverses and drives the first magnet block 26 to move toward the side close to the second magnet block 27 until the second magnet block 27 corresponds to the position of the first magnet block 26. 27 is magnetically connected with the first magnet block 26 and fixed to each other, so that the protective cavity sleeve 21 can be better secured on the outer periphery of the active needle assembly 1, and the active needle assembly 1 is sealed and protected to prevent it from being contaminated and affecting its use; if the condom assembly 2 is needed, the user can reverse the rotating plate 24 to magnetically separate the first magnet block 26 from the second magnet block 27, and the subsequent user can pull the protective cavity sleeve 21 in a horizontal direction away from the outer needle sheath 11 to remove the protective cavity sleeve 21 from one side of the active needle assembly 1, and the active needle assembly 1 can be used for sampling. This arrangement protects the active needle assembly 1 on one side through the condom assembly 2, so as to prevent the active needle assembly 1 from being contaminated when not in use and the needle end from causing harm to the patient, and the active needle assembly 1 and the condom assembly 2 are convenient to separate and install, thereby improving the practicality of the device.

[0032] 2. The utility model discloses a biopsy needle with a safety structure. The rear end of the biopsy needle is provided with a handle suitable for medical staff to hold. The traditional biopsy needle is a fixed structure. The needle tube itself and the handle are integrated, which is not convenient for users to disassemble it. The biopsy needle is not easy to be segmented and recycled and reused, which will cause material waste. The rear end of the biopsy needle assembly 1 of the utility model is provided with a handle assembly 3. The anti-skid handle block 34 is a component made of anti-skid material, which is convenient for users to hold and improve the grip stability when using the biopsy needle. The doctor holds the anti-skid handle block 34 in one hand and punctures the biopsy needle assembly 1 into the patient's soft tissue. Before reaching the target position After the positioning is achieved, the inner needle core 12 remains stationary, and the outer needle sheath 11 continues to puncture the soft tissue forward until it reaches the target position. After the outer needle sheath 11 obtains the biopsy tissue at the target position, the tissue sample and the biopsy needle are withdrawn to the outside of the soft tissue by vacuum adsorption, thereby attracting the sample tissue to be sampled into the active needle assembly 1 to achieve the sampling work. The active needle sampling principle and steps are existing mature technologies and are not elaborated in detail here; when it is necessary to recover and disinfect the active needle assembly 1 and the handle assembly 3 in sections, the operator can reversely rotate the threaded cavity seat 31 to separate the thread of the threaded cavity seat 31 from the external threaded column 13, and the hand can be removed. The handle assembly 3 is separated from the active needle assembly 1 as a whole, and the user can also rotate the knob 37 in the opposite direction. The knob 37 drives the forward and reverse threaded rods 39 to rotate, so that the two sets of movable plates 391 and the arc-shaped clamping plates 392 move away from each other, and the two sets of arc-shaped clamping plates 392 give up clamping and fixing the mounting rod 35. The user pulls the anti-slip handle block 34 to the side away from the cavity rod 33, so that the mounting rod 35 is detached from the cavity rod 33, and the anti-slip handle block 34 is disassembled from the threaded cavity seat 31, which is convenient for the user to disinfect, maintain and replace the anti-slip handle block 34. If the anti-slip handle block 34 needs to be re-fixed, the mounting rod 35 is re-engaged It is fixed in the inner cavity of the cavity rod 33. At this time, the mounting rod 35 is between the two groups of arc-shaped clamping plates 392. Turning the knob 37 causes the forward and reverse screw rods 39 to rotate, which drives the two groups of movable plates 391 and the arc-shaped clamping plates 392 to move closer to each other until the two groups of arc-shaped clamping plates 392 re-clamp and fix the mounting rod 35. The installation of the anti-slip handle block 34 is completed. This arrangement makes the biopsy needle detachable, and the user can easily disassemble and install the biopsy needle assembly 1 and the handle assembly 3. The biopsy needle can be recovered in sections for maintenance and reused after disinfection to avoid material waste, thereby improving the scope of application of the device and the practicality of the device.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biopsy needle with a safety structure, comprising a biopsy needle assembly (1) and a safety condom assembly (2) arranged at one end of the biopsy needle assembly (1), wherein a handle assembly (3) is arranged at one end of the biopsy needle assembly (1), characterized in that: The active needle assembly (1) comprises an outer needle sheath (11) and an inner needle core (12) arranged at one end of the outer needle sheath (11), the inner needle core (12) being capable of slidingly cooperating with the outer needle sheath (11), an outer threaded column (13) being arranged at one end of the outer needle sheath (11) away from the inner needle core (12), the handle assembly (3) comprising a threaded cavity seat (31) threadedly connected to one end of the outer threaded column (13), a cavity rod (33) being arranged at the upper end of the threaded cavity seat (31), and the cavity rod (33) being snap-connected to the inner cavity of the cavity rod (33). A mounting rod (35), one end of which is fixedly connected to an anti-slip handle block (34), one side of the threaded cavity seat (31) is fixedly connected to a fixing block component (36), one side of the fixing block component (36) is fixedly connected to a mounting cavity groove block (38), the condom assembly (2) comprises a protective cavity sleeve (21) sleeved on one side of the outer needle sheath (11), one side of the protective cavity sleeve (21) is fixedly connected to a fixing plate (22), and one side of the threaded cavity seat (31) is fixedly connected to a second magnet block (27).

2. A biopsy needle with a safety structure according to claim 1, characterized in that: The condom assembly (2) further comprises a support plate (23) fixedly connected to one side of the fixed plate (22), wherein the support plates (23) are provided in two groups, and a rotating plate (24) is rotatably connected between the two groups of support plates (23).

3. A biopsy needle with a safety structure according to claim 2, characterized in that: A connecting block (25) is fixedly connected to one side of the rotating plate (24), and a first magnet block (26) is arranged on one side of the connecting block (25).

4. A biopsy needle with a safety structure according to claim 3, characterized in that: The first magnet block (26) matches the second magnet block (27) and is magnetically linked.

5. A biopsy needle with a safety structure according to claim 4, characterized in that: The handle assembly (3) also includes a forward and reverse threaded rod (39) rotatably connected to the inner cavity of the mounting cavity block (38), one end of the forward and reverse threaded rod (39) passes through the mounting cavity block (38) and extends to the outside of the mounting cavity block (38), and one end of the forward and reverse threaded rod (39) is fixedly connected to a knob (37).

6. A biopsy needle with a safety structure according to claim 5, characterized in that: The outer circumference of the positive and negative threaded rod (39) is threadedly connected with a movable plate (391), and two groups of movable plates (391) are provided. The two groups of movable plates (391) are slidably connected to the inner cavity of the installation cavity groove block (38).

7. A biopsy needle with a safety structure according to claim 6, characterized in that: One side of the movable plate (391) passes through the installation cavity block (38) and extends to the outside of the installation cavity block (38), and one side of the movable plate (391) is fixedly connected to an arc-shaped clamping plate (392).

8. The biopsy needle with a safety structure according to claim 7, characterized in that: The mounting rod (35) is arranged between the two groups of arc-shaped clamping plates (392).

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