Medical electric needle biopsy needle

Abstract

The utility model relates to the technical field of puncture needles, in particular to a medical electric puncture biopsy needle which comprises a handle and a driving mechanism fixedly connected with the handle, the driving mechanism comprises a shell and a motor located in the shell, the output end of the motor is fixedly connected with a connecting piece, the connecting piece is detachably connected with a puncture needle assembly, and the puncture needle assembly is fixedly connected with the handle. And a battery assembly for supplying power to the motor is arranged in the handle. According to the electric puncture needle, when bone puncture operation is carried out, a puncture doctor needs to hold a handle, the handle is mainly used for controlling the direction and exerting certain pressure, a needle sleeve and a needle core are driven by a motor to rotate left and right rapidly and cut bone tissue continuously, the puncture accuracy can be greatly improved, the time is greatly shortened, and the puncture efficiency is greatly improved. Meanwhile, physical exhaustion of doctors is relieved, operative complications can be greatly reduced, and benefits are brought to the majority of patients.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture needles, in particular to a medical electric puncture biopsy needle. Background Art

[0002] Space-occupying lesions in the human body, especially tumors, pose a serious threat to patients' health. Therefore, early detection, diagnosis, and treatment are the best means of prolonging patients' lives. To determine the pathological type and genetic expression of lesions, a biopsy needle is used. Guided by imaging equipment such as CT and ultrasound, the needle is precisely inserted percutaneously into the lesion, and a portion of the lesion is removed for pathological and genetic diagnosis. These diagnostic methods guide precise clinical treatment.

[0003] Currently, bone biopsy needles are used for bone tissue biopsy, which are hollow needle sleeves and needle cores (flat-head needle cores, side-shovel needle cores, etc.). The middle of the needle sleeve is hollow, with a handle at the tail end. The hollow part of the needle sleeve continues through the handle, making it easier for other needle-type instruments to enter through the needle sleeve for operation. During puncture, the needle sleeve and needle core are inserted together. The needle core ensures that a sharp tip is formed at the front end of the needle sleeve, making it easier to pierce tissue and increases the bearing capacity of the needle sleeve, ensuring that the needle will not bend when puncturing high-strength bone tissue. During use, the surgeon holds the handle, pierces the skin, and then pierces the diseased bone tissue. Bone tissue lesions are often located in the middle medullary cavity. Some lesions are located deep in the bone tissue, such as lesions within the lumbar vertebral body, which require piercing deeper bone tissue; for example, lesions within the femur require penetrating the hardest bone tissue in the human body to be removed. The bone in these areas is hard, and the lesions are often surrounded by important tissues, blood vessels, and nerves. Punctures must be performed with minimal damage and a suitable needle tract must be selected to prevent major complications. Furthermore, during biopsy sampling, the needle tract could accidentally implant a tumor, leading to tumor metastasis. Therefore, the needle tract should be located within the surgical incision to facilitate cleaning during surgery. Therefore, needle insertion is often performed in locations and directions that are very inconvenient to operate.

[0004] During the puncture, the surgeon must hold the handle and rotate it left and right, cutting the tissue and breaking through it bit by bit. Due to the extremely hard bone and the inconvenient puncture position and angle, insertion is very difficult. A single surgeon has limited arm strength and cannot continue. To shorten the time, two surgeons often take turns puncturing. Even so, the entire process is still long and the patient is under great psychological pressure. At the same time, because of the strong force applied, rotating the handle can cause the needle sleeve and needle core to shake. When puncturing cylindrical bones, such as the femur, the needle can easily slide to the side, puncturing blood vessels, and causing serious complications. Utility Model Content

[0005] The purpose of the utility model is to provide a medical electric puncture biopsy needle that can solve the above technical problems.

[0006] The utility model provides a medical electric puncture biopsy needle, comprising a handle and a driving mechanism fixedly connected to the handle, the driving mechanism comprising a housing and a motor located in the housing, the output end of the motor being fixedly connected to a connector, the connector being detachably connected to a puncture needle assembly, a battery assembly for powering the motor being provided in the handle, and specifically, a miniature high-torque motor being adopted as the motor.

[0007] Furthermore, the puncture needle assembly includes a needle sleeve and a needle core located inside the needle sleeve and passing through the needle sleeve.

[0008] Furthermore, the needle sleeve is provided with a hexagonal needle tail at one end close to the connector, and the connector is provided with a hexagonal groove matching the needle tail. Specifically, the needle tail is connected to the needle sleeve body for accommodating the needle core.

[0009] Furthermore, one end of the needle core close to the connector is movably embedded in the needle tail and rotates together under the drive of the motor. Specifically, the tail of the needle core is also hexagonal (provided with a hexagonal prism), which can be snapped into place with the needle tail and can rotate in unison when rotating.

[0010] Furthermore, the surface of the needle sleeve is provided with equidistantly arranged scale lines along the axis, so that the insertion depth can be understood during the operation.

[0011] Furthermore, the battery assembly is a rechargeable lithium-ion battery. A wireless charging module board is located at the bottom of the handle to recharge the rechargeable lithium-ion battery. This wireless charging module board has a built-in charging coil, which avoids the drawback of conventional charging methods where the interface is easily exposed to liquids. The entire handle is highly waterproof, facilitating disinfection. The wireless charging module board and the charging base utilize a magnetic design, allowing the entire device to securely attach to the charging base during charging. The charging base is available in circular or oval shapes, corresponding to the two handle types. The charging base houses the charging driver board, coil, and other components.

[0012] In addition, two buttons are designed on the side of the wireless charging module board, a switch button and a start button, which can avoid accidental start-up caused by a single switch button, thereby improving surgical safety. Alternatively, it can be designed as three buttons as needed, a switch button, a start button for gear I, and a start button for gear II. The gear can be selected according to needs to adjust the rotation speed.

[0013] There is also a circuit board inside the handle. Driven by the circuit board, the motor can switch forward and reverse instantly instead of rotating in one direction, preventing human tissue from being constantly entangled by the needle sleeve and reducing patient discomfort.

[0014] Furthermore, the outer surface of the handle is provided with anti-slip lines.

[0015] Further, the top of the handle is provided with a side cover which is threadedly connected with the handle, and the side cover is opened to take out the battery, driving circuit storage bracket (for placing a circuit board) in the handle for maintenance or replacement, thereby prolonging the service life of the equipment.

[0016] Further, the handle is perpendicular to the driving mechanism.

[0017] Alternatively, the handle and the driving mechanism are located in the same axial direction.

[0018] Beneficial effects:

[0019] The utility model provides a kind of electric puncture needle, when row bone puncture surgery, puncture doctor needs to hold handle, mainly effort is used to control direction, and give certain pressure, needle cover and needle core are driven under the motor, fast left and right rotation, constantly cut bone tissue, the precision of puncture can be greatly improved, time is greatly shortened, while alleviating the physical consumption of doctor, can greatly reduce surgical complications, benefit the majority of patients. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is the whole structure schematic view of the utility model embodiment 1;

[0022] Figure 2 It is the structure schematic view for showing the utility model to link member;

[0023] Figure 3 It is the internal structure schematic view of the utility model embodiment 1;

[0024] Figure 4 It is the structure schematic view of needle cover and needle core of the utility model;

[0025] Figure 5 It is the structure schematic view when needle core is located in needle cover of the utility model;

[0026] Figure 6 It is the structure schematic view for showing the utility model to needle cover and needle core fixed bolt;

[0027] Figure 7 It is the whole structure schematic view of the utility model embodiment 2;

[0028] Figure 8 It is the internal structure schematic view of the embodiment 2 of the utility model.

[0029] Mark explanation: 1-handle, 2-driving mechanism, 201-housing, 202-motor, 3-linking piece, 4-needle cover, 401-needle tail, 5-needle core, 501-hexagonal prism, 6-scale line, 7-rechargeable lithium battery, 8-wireless charging module board, 9-side cover, 10-driving circuit bin bracket, 11-switch button, 12-start button, 13-through hole, 14-latch. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Embodiment 1

[0034] A medical electric puncture biopsy needle, such asFigures 1-5 As shown, it comprises a handle 1 and a driving mechanism 2 fixedly connected with the handle 1, the two are perpendicular to each other, and the structure is T-shaped, the driving mechanism 2 comprises a shell 201 and a motor 202 (a micro-torque motor is adopted) located in the shell 201, the output end of the motor 202 is fixedly connected with a connecting piece 3, the connecting piece 3 is detachably connected with a puncture needle assembly, a battery assembly for supplying power to the motor 202 is arranged in the handle 1, and the outer surface of the handle 1 is provided with anti-skid lines.

[0035] Specifically, the puncture needle assembly comprises a needle sleeve 4 and a needle core 5 located inside the needle sleeve 4 and penetrating through the needle sleeve 4, one end of the needle sleeve 4 close to the connecting piece 3 is provided with a hexagonal needle tail 401, the connecting piece 3 is provided with a hexagonal groove matched with the needle tail 401, specifically, the needle tail 401 is through the needle sleeve 4 body and is used for accommodating the needle core 5, one end of the needle core 5 close to the connecting piece 3 is movably embedded in the needle tail 401 and rotates together under the driving of the motor, the tail of the needle core 5 is also hexagonal (provided with a hexagonal rib 501) and can be clamped with the needle tail 401 and rotate consistently. The surface of the needle sleeve 4 is provided with equidistantly arranged scale lines 6 along the axis, the depth of penetration can be understood in the operation, in addition, the needle tail 401 and the hexagonal rib 501 are both provided with corresponding through holes 13, the through holes 13 are provided with a latch 14, the latch 14 can be inserted when the soft tissue is manually punctured without the need of electricity, and the needle core 5 is prevented from retreating under pressure.

[0036] The battery assembly is a rechargeable lithium battery 7, the bottom of the handle 1 is provided with a wireless charging module plate 8 for supplementing the rechargeable lithium battery 7, the wireless charging module plate 8 is embedded with a charging coil, avoiding the interface of the conventional charging mode being easily liquid-infiltrated, the entire handle 1 has good waterproofness and is conducive to disinfection. The wireless charging module plate 8 and the charging base adopt magnetic attraction design, and the entire device can be firmly combined with the charging base during charging. The charging base is circular or elliptical, and can match two types of handles respectively, and the charging base is provided with a charging drive plate, a coil and other components. The magnetic attraction and wireless charging structure of the above wireless charging module plate and the charging base are prior art, and will not be described here.

[0037] In addition, the side of the wireless charging module plate 8 is designed with two buttons, the switch button 11 and the start button 12, which can avoid the misstart caused by a single switch button and improve the safety of the operation, or can be designed as three buttons according to the needs, one switch button, one start I gear, and one start II gear, which can select the gear according to the needs and realize the rotation speed adjustment. The handle 1 is also provided with a circuit board, under the driving of the motor forward and reverse driving chip in the circuit board, the motor 202 can switch forward and reverse instantaneously, instead of rotating in one direction, which can avoid the human tissue being continuously wound by the needle sleeve and reduce the discomfort of the patient. The forward and reverse interval time of the motor is determined by the parameters preset by the forward and reverse driving chip, and the circuit board structure design and driving principle are prior art.

[0038] In addition, the top of the handle 1 is provided with a side cover 9, which is threadedly connected with the handle 1. The side cover 9 can be opened to take out the battery, drive circuit storage bracket 10 (for placing the circuit board) in the handle 1 for maintenance or replacement, thereby prolonging the service life of the equipment. The side cover 9 is provided with a sealing rubber ring to prevent liquid from damaging the internal devices during disinfection.

[0039] Example 2

[0040] As shown in Figures 6-7 , the structure is basically the same as that of example 1, except that the handle 1 and the driving mechanism 2 are located in the same axial direction, forming a "one" type mechanism. The bottom of the handle 1 is provided with a wireless charging module plate 8 for charging the rechargeable lithium battery 7. The wireless charging module plate 8 is embedded with a charging coil. The side cover 9 and the wireless charging module plate 8 are designed as an integral structure, i.e. the detachable position of the handle 1 is changed to the wireless charging module plate 8. The handle can be unscrewed to take out the battery and the drive circuit storage bracket in the handle.

[0041] Work and use process:

[0042] Before use, make sure that the device is fully charged. The handle 1 and the driving mechanism 2 need to be disinfected first. Ultraviolet irradiation, gas disinfection, wiping disinfection, etc. can be used except for immersion disinfection. The needle sleeve, needle core, etc. can be disinfected by immersion and other disinfection methods.

[0043] Before puncture, according to the image data of the patient's diseased part, the puncture point on the body surface is located, and the puncture angle and depth of the puncture point to the target point are measured. The puncture site is fully disinfected, then the needle sleeve 4 and the needle core 5 used for puncture are sleeved together, the pin 14 is inserted, the needle tip part is aligned with the puncture point, and the needle is inserted according to the measured angle and depth. After the needle is inserted to the bone cortex, since the bone is very hard, it needs to be continuously rotated and cut to cut the bone cortex, at this time, the pin 14 is removed, the adapter 3 is connected, after the adapter 3 is connected, the angle of the needle is grasped, the handle 1 is gripped, the switch button 11 and the start button 12 are pressed in turn, and the puncture needle is rotated and cut left and right under the drive of the motor 202 of the driving mechanism 2. The motor 202 is a micro-torque motor, which has a gear speed regulation, and the speed is set in a safe condition. The rotation frequency is higher than that of manual puncture, but it should not be too high. Under the drive of the circuit board, the motor 202 can be switched instantaneously in forward and reverse directions, instead of rotating in one direction, so as to avoid that the human tissue is continuously wound by the needle sleeve and reduce the discomfort of the patient.

[0044] During the continuous rotation and cutting of the cortex, the patient's condition and the puncture depth are observed, and when the appropriate depth is reached, the entire device can be removed, the pin 14 is inserted again, and the depth and angle are confirmed by image scanning. According to the situation, the cutting is performed again until the puncture position is reached.

[0045] When the puncture position is reached, the needle core 5 is removed, a flat short needle core is inserted, the length of the flat short needle core is shorter than that of the needle sleeve, so that a cavity is left at the front end of the needle sleeve, and bleeding is prevented from flowing along the hollow needle sleeve. At this time, the rotation can be continued manually or the rotation can be continued by using the electric rotation to cut the soft tissue (the cutting of the soft tissue is very easy), and the soft tissue will partially enter the cavity of the needle sleeve 4 and be taken out when the needle is withdrawn. Then the flat short needle core is withdrawn, a longer flat needle core is used to push the soft tissue in the needle sleeve 4 into the specimen bag, and the sampling is completed.

[0046] After the puncture is completed, the entire device is disinfected, then charged, and then disinfected for standby after charging.

[0047] The advantages of the technical scheme of the utility model are as follows:

[0048] 1. Wireless charging is adopted to avoid the existence of various interfaces, so that disinfectant liquid, gas and the like do not affect the operation of the equipment, and the stability of the equipment is improved.

[0049] 2. A large torque motor is adopted to rotate left and right under the action of the circuit board, the rotation angle is about 45° left and right, the angle during manual puncture is simulated, the soft tissue of the human body is prevented from being wound by the needle sleeve during the electric fast cutting of the bone cortex, and the comfort of the patient is improved.

[0050] 3. The wireless charging has magnetic attraction function, so that the contact between the two is not poor during charging, the charging is ensured to be smooth and uninterrupted.

[0051] 4. The needle sleeve is provided with a scale to know the depth of insertion, the needle sleeve is provided with a hexagonal needle tail structure, and the needle core tail is designed with a hexagonal prism, which can be matched and sleeved together. When the soft tissue is not cut by the electric cutter, the plug can be inserted to lock them together, and the needle is manually inserted. When the electric cutter is needed, the plug is pulled out, the tail of the two is sleeved together, and the tail of the two is inserted into the adapter, the switch is turned on, and the cutting is started;

[0052] 5. During the cutting operation, the doctor only needs to grasp the direction and give a certain pressure, so as to continuously cut the bone tissue, avoid the needle shaking left and right due to the wrist force during manual cutting without electric power, avoid the needle sliding to one side to cause important blood vessels, nerves and other structures of the patient to be damaged, and improve the safety of the operation;

[0053] 6. When the T-shaped handle is used, even if the electric power is not turned on, the manual cutting can still be realized by rotating the handle by hand, that is, the electric power and the manual cutting can be integrated;

[0054] 7. Considering the habit of different surgeons, T-shaped or "I"-shaped devices can be used;

[0055] 8. Precision medicine and minimally invasive medicine are the goals pursued in clinical practice. Under the condition of minimally invasive trauma, biopsy can be taken to obtain sufficient information and provide precise treatment plan for patient treatment. Puncture biopsy is carried out in different degrees in various hospitals. If better equipment is available, it will play a very important role in clinical treatment. The design combines the clinical needs and improves the disadvantages of the existing puncture equipment without changing the habit of the doctor. From manual cutting to electric cutting, it can save manpower, improve efficiency, reduce complications, etc. It has very high clinical and social value, and if it is put into production, it also has very high economic value.

[0056] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A medical electric puncture biopsy needle, characterized in that: The invention comprises a handle and a driving mechanism fixedly connected to the handle, the driving mechanism comprising a shell and a motor located in the shell, the output end of the motor being fixedly connected to a connector, the connector being detachably connected to a puncture needle assembly, the handle being provided with a battery assembly for powering the motor, the puncture needle assembly comprising a needle sleeve and a needle core located inside the needle sleeve and passing through the needle sleeve, the surface of the needle sleeve being provided with equidistantly arranged scale lines along the axis, the battery assembly being a rechargeable lithium battery, the bottom of the handle being provided with a wireless charging module board for recharging the rechargeable lithium battery, the wireless charging module board having an embedded charging coil, the side of the wireless charging module board being provided with three buttons, a switch button, a start gear I, and a start gear II, the gear position being selectable as needed to adjust the rotation speed.

2. The medical electric puncture biopsy needle according to claim 1, characterized in that: The needle sleeve is provided with a needle tail of a hexagonal structure at one end close to the connecting piece, and the connecting piece is provided with a hexagonal groove matching the needle tail.

3. The medical electric puncture biopsy needle according to claim 2, characterized in that: One end of the needle core close to the connecting piece is movably embedded in the needle tail and rotates together under the drive of the motor.

4. The medical electric puncture biopsy needle according to claim 1, characterized in that: The outer surface of the handle is provided with anti-slip lines.

5. The medical electric puncture biopsy needle according to claim 1, characterized in that: A side cover is provided on the top of the handle, the side cover is threadedly connected to the handle, and a sealing rubber ring is provided on the side cover.

6. The medical electric puncture biopsy needle according to claim 1, characterized in that: The direction of the handle and the direction of the driving mechanism are perpendicular to each other.

7. The medical electric puncture biopsy needle according to claim 1, characterized in that: The handle and the driving mechanism are located in the same axial direction.

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