Spine puncture probe

Abstract

The spine puncture probe comprises a handle and a probe body connected with the handle, the probe body is of a multi-layer structure and comprises an inner pole located on the innermost layer, an insulating layer located on the middle layer and an outer pole located on the outermost layer; a circuit board is arranged in the handle; one end of the probe body is a detection end, the other end of the probe body is installed in the handle, and the inner pole and the outer pole are respectively connected with the circuit board. The spine puncture probe is of a wireless structure and does not need to be connected with external analysis equipment through a wire, and an operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to a spinal puncture probe. Background Art

[0002] A spinal puncture probe is a commonly used medical device that includes a slender needle made of stainless steel or titanium alloy, about 16 cm in length, with a sharp tip at one end so that it can penetrate the skin and soft tissue and be inserted into the spine.

[0003] Spinal puncture probes are commonly used for positioning and measurement before spinal surgery. Before surgery, the doctor inserts a spinal probe into the patient's back or neck area to determine the position and shape of the spinal bone structure, thereby helping the doctor determine the target area for surgery and guiding the operation to ensure the accuracy and safety of the operation.

[0004] Spinal puncture probes can also be used to diagnose spinal diseases or injuries. Doctors can collect spinal fluid or tissue samples by inserting a spinal probe to detect the presence and severity of the disease. Spinal puncture probes can also be used to establish screw channels during spinal surgery for the treatment of spinal trauma, deformities (scoliosis or spondylolisthesis), degenerative diseases, infections, and tumors. In addition, spinal probes can also be used to inject drugs or other therapeutic substances to provide local treatment or relieve spinal pain.

[0005] The Chinese patent application with publication number CN 204909588 U discloses a puncture biopsy needle with a fiber optic probe, which is mainly composed of: a host, a puncture needle, and a fiber optic probe display, and the fiber optic probe is arranged on the outer edge of the puncture needle core. The fiber optic probe can transmit laser to the tip of the puncture needle, thereby realizing real-time capture, automatic analysis and monitoring of the Raman spectrum signal of the needle tip contacting the tissue or cell. The puncture biopsy needle needs to be connected to a complex analysis device through a connecting line, which may cause inconvenience in some surgical occasions. Therefore, it is necessary to develop a puncture probe without a complex connecting line. Utility Model Content

[0006] The utility model provides a spinal puncture probe. The spinal puncture probe is a wireless structure and does not need to be connected to an external analysis device through a wire, so the operation is more convenient.

[0007] The technical solution of the utility model is as follows:

[0008] A spinal puncture probe comprises a handle and a probe body connected to the handle, wherein the probe body is a multi-layer structure, comprising an inner pole located in the innermost layer, an insulating layer located in the middle layer, and an outer pole located in the outermost layer;

[0009] A circuit board is provided inside the handle, and a buzzer, a flash light and a battery are connected to the circuit board;

[0010] One end of the probe needle body is a detection end, and the other end is installed in the handle, and the inner pole and the outer pole are respectively connected to the circuit board.

[0011] The inner pole and the outer pole on the detection end detect the impedance data of the contact part, and transmit the impedance data to the circuit board;

[0012] The circuit board compares the impedance data with a preset impedance domain, and controls the sound frequency of the buzzer and the flash frequency of the flash lamp according to the size of the comparison result.

[0013] In the utility model, when the puncture probe is used to drill a guide hole on a spinal vertebra, different impedance data are obtained at the inner and outer poles of the detection end as the detection end contacts different parts, and then the impedance data is transmitted to the circuit board, and different alarm sound frequencies and flash light frequencies are used to indicate the bone layer where the blade is located, thereby conveniently realizing real-time monitoring, and because there is no need to connect to a host computer, the operation is more convenient.

[0014] In the utility model, the handle and the probe needle body are connected in a detachable manner or in a non-detachable manner.

[0015] When the handle and the probe needle body are in a non-detachable connection, a fixed joint is provided at one end of the probe needle body close to the handle;

[0016] The fixed joint is fixed to the handle via a limiting protrusion, and at this time, the probe needle body is not replaceable.

[0017] When the handle and the probe needle body are in a non-detachable connection, the end of the probe needle body close to the handle is provided with a quick-change connector that can be plugged into the handle;

[0018] The handle is provided with a locking device which cooperates with the quick-change connector;

[0019] The locking device comprises a fixing sleeve with a steel ball fixing hole, a steel ball arranged in the steel ball fixing hole, and a locking sleeve sleeved on the outer surface of the fixing sleeve;

[0020] The fixed sleeve is sleeved on the outer surface of the quick-change connector, and the outer surface of the quick-change connector is provided with a limit slot that cooperates with the steel ball. At this time, by setting a special locking device, the probe needle body can be quickly locked and unlocked, thereby realizing rapid replacement of the probe needle body, thereby better meeting surgical needs.

[0021] Preferably, the locking sleeve is slidably sleeved on the fixed sleeve 8;

[0022] The locking sleeve comprises a locking section with a smaller inner diameter and an unlocking section with a larger inner diameter;

[0023] A gap is left between the unlocking section and the fixing sleeve, and the width of the gap is greater than the depth of the limiting slot.

[0024] Preferably, the end of the fixed sleeve extending into the handle is provided with a fixed convex edge, and the handle is provided with a fixed groove matched with the fixed convex edge. As a further preference, a spring is sleeved on the outer surface of the fixed sleeve, and the two ends of the spring are respectively in contact with the fixed convex edges of the locking sleeve and the fixed sleeve 8.

[0025] Preferably, the cross-section of the portion of the quick-change connector inserted into the handle is a hexagonal structure, which can prevent the probe needle body from rotating.

[0026] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0027] (1) The utility model has a circuit board built into the handle, and there is no need to connect external wires. Different alarm sounds and different flashing light colors can be used to indicate the bone layer where the needle is located, thereby conveniently realizing real-time monitoring and adjusting the insertion angle and depth of the probe, making the operation more convenient.

[0028] (2) One of the detachable structures of the utility model can quickly lock and unlock the probe needle body by providing a special locking device, thereby realizing the rapid replacement of the probe needle body, thereby better meeting the needs of the operation; at the same time, the cross-section of the quick-change connector is a hexagonal structure, which can effectively prevent the rotation of the probe, making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the appearance of a non-replaceable spinal puncture probe of the utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of the internal structure of a spinal puncture probe is shown;

[0031] Figure 3 for Figure 1 The schematic diagram of the structure of the probe needle body of the spinal puncture probe shown;

[0032] Figure 4 for Figure 1 A cross-sectional view of the handle and probe connection portion shown;

[0033] Figure 5 for Figure 1 An exploded view of the handle and probe connection portion of a spinal puncture probe is shown;

[0034] Figure 6This is a schematic diagram of the circuit board layout;

[0035] Figure 7 It is an axonometric view of the circuit board;

[0036] Figure 8 It is a schematic diagram of the appearance of a replaceable spinal puncture probe of the utility model;

[0037] Fig. 9 for Figure 8 A schematic diagram of the internal structure of a spinal puncture probe is shown;

[0038] Fig.10 for Figure 8 The schematic diagram of the structure of the probe needle body of the spinal puncture probe shown;

[0039] Fig.11 for Figure 8 A cross-sectional view of the handle and the probe connection portion shown in a locked state;

[0040] Fig.12 for Figure 8 A cross-sectional view of the handle and probe connection portion shown in an unlocked state;

[0041] Fig.13 for Figure 8 An exploded view of the handle and probe connection portion of a spinal puncture probe is shown;

[0042] Fig.14 It is a structural schematic diagram of the detection end of the spinal puncture probe of the utility model;

[0043] Fig.15 for Fig.14 Schematic diagram of the structure of the blade tip of the detection end; in the figure, 1. circuit board, 2. outer pole, 3. insulation layer, 4. inner pole, 5. quick-change connector, 6. locking sleeve, 7. spring, 8. fixed sleeve, 9. fixed connector, 11. steel ball, 12. handle, 13. battery, 14. buzzer, 15. flash light. DETAILED DESCRIPTION

[0044] The spinal puncture probe of the present invention is further described below in conjunction with the accompanying drawings.

[0045] The spinal puncture probe of the utility model includes two specific structures, which can be respectively called a non-replaceable spinal puncture probe and a replaceable spinal puncture probe.

[0046] Figure 1 to Figure 5 A schematic diagram of the structure of a non-replaceable spinal puncture probe or its components, comprising Figure 1 It can be seen that the spinal puncture probe includes a handle 12 and a probe needle body connected to the handle 12 .

[0047] Depend on Fig.14 and 15 It can be seen that the probe needle body is a multi-layer structure, including an inner pole 4 located in the innermost layer, an insulating layer 3 located in the middle layer, and an outer pole 2 located in the outermost layer.

[0048] The detection end is a triangular or multi-faceted structure with a blade tip, which has the function of drilling (cutting) bones while detecting, and the preferred angle of the blade tip is 90°.

[0049] Depend on Figures 2 to 4 It can be seen that a circuit board 1 is provided inside the handle 12, and a mounting groove is provided on the inner wall of the handle 12, and the circuit board 1 is fixed in the mounting groove;

[0050] One end of the probe needle body is a detection end, and the other end is installed in the handle 12, and the inner pole 4 and the outer pole 2 are respectively connected to the circuit board 1.

[0051] The end of the probe needle body close to the handle 12 is provided with a fixed joint 9;

[0052] The fixed joint 9 is fixed to the handle 12 via a limiting protrusion, and at this time, the probe needle body is not replaceable.

[0053] Depend on Figure 6 and Figure 7 It can be seen that the circuit board 1 is connected to a buzzer 14, a flashlight 15 and a battery 13, wherein the battery 13 is a button battery welded on the circuit board 1; there are two flashlights 15, which can effectively avoid the light being blocked by the palm when holding, thereby improving the safety of the device, and the two flashlights 15 are better compatible with left-hand holding, increasing the usage scenarios.

[0054] In the present invention, the outer shell of the handle 12 is made of a transparent material, and the frequency of the flash lamp 15 can be effectively observed through the transparent material.

[0055] In the utility model, when the puncture probe is used to drill a guide hole on a spinal vertebral body, the inner pole 4 and the outer pole 2 of the detection end obtain different impedance data as the detection end contacts different parts, and then the impedance data is transmitted to the circuit board 1, and the detected impedance value is compared with the impedance domain preset by the system to determine the human body part (bone layer) where the detection end is located, and then the different signals of the buzzer 14 and the flash 15 are used to indicate the bone layer where the needle is located through different alarm sounds and different colors of the flash 15, so as to conveniently realize real-time monitoring, and because it does not need to be connected to the host, the operation is more convenient. There are three specific situations. When the detection end contacts the cortical bone, the impedance is high, the alarm sound frequency is low, and the flash frequency is low; when the detection end contacts the cancellous bone, the impedance is medium, the alarm sound frequency is medium, and the flash frequency is medium; when the detection end contacts the blood, the impedance is low, the alarm sound frequency is high, and the flash frequency is high.

[0056] Figure 8 to Figure 13 It is a structural diagram of a non-replaceable spinal puncture probe or its components. The other parts are similar in structure, and the difference lies mainly in the connection between the handle 12 and the probe needle body. The end of the probe needle body close to the handle 12 is provided with a quick-change connector 5 that can be plugged into the handle 12;

[0057] The handle 12 is provided with a locking device that cooperates with the quick-change connector 5;

[0058] The locking device comprises a fixing sleeve with a steel ball fixing hole, a steel ball 11 arranged in the steel ball fixing hole, and a locking sleeve 6 sleeved on the outer surface of the fixing sleeve;

[0059] The fixed sleeve is sleeved on the outer surface of the quick-change connector 5, and the outer surface of the quick-change connector 5 is provided with a limit slot that cooperates with the steel ball 11. At this time, by setting a special locking device, the probe needle body can be quickly locked and unlocked, thereby realizing the rapid replacement of the probe needle body. It can adapt to probes of different diameters, and then adapt to screws of different diameters. It can be compatible with steel needles with a diameter of 2.0-4.0, thereby better meeting surgical needs.

[0060] Specifically, the locking sleeve 6 is slidably sleeved on the fixed sleeve;

[0061] The locking sleeve 6 comprises a locking section with a smaller inner diameter and an unlocking section with a larger inner diameter;

[0062] A gap is left between the unlocking section and the fixing sleeve, and the width of the gap is greater than the depth of the limiting slot.

[0063] Specifically, a fixing convex edge is arranged at one end of the fixing sleeve extending into the handle 12, and a fixing groove matching with the fixing convex edge is arranged in the handle 12. As a further preferred embodiment, a spring 7 is sleeved on the outer surface of the fixing sleeve, and the two ends of the spring 7 are respectively in contact with the fixing convex edge of the locking sleeve 6 and the fixing sleeve.

[0064] Specifically, the cross section of the portion of the quick-change connector 5 inserted into the handle 12 is a hexagonal structure, which can prevent the probe needle body from rotating.

[0065] During the surgical operation, the locking device is in a locked state. At this time, the locking section of the locking sleeve 6 contacts the steel ball and applies pressure to the steel ball, pressing the steel ball into the limiting groove, thereby tightly fixing the quick-change connector 5 in the handle, which can facilitate the operation; when the probe needle body needs to be replaced, press the hand on the locking sleeve 6 and apply force in the direction of the handle, the locking sleeve 6 moves inward along the axial direction of the probe by an end distance, and the unlocking section of the locking sleeve 6 contacts the steel ball. Since the width of the gap between the unlocking section and the fixed sleeve is greater than the depth of the limiting groove, the steel ball can move outward when the probe is pulled out at this time, and the locking effect cannot be achieved. The probe can be directly pulled out (and the diameter of the steel ball is slightly larger than the width of the limiting groove. When the probe is pulled out, the steel ball falls into the handle through the limiting groove) and replaced, and then under the action of the spring 7, the locking sleeve 6 can be reset to achieve replacement.

[0066] The specific implementation methods described above provide a detailed description of the technical solutions and beneficial effects of the utility model. It should be understood that the above is only the most preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, supplements and equivalent substitutions made within the scope of the principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A spinal puncture probe, comprising a handle (12) and a probe body connected to the handle (12), characterized in that: The probe needle body is a multi-layer structure, comprising an inner pole (4) located in the innermost layer, an insulating layer (3) located in the middle layer, and an outer pole (2) located in the outermost layer; A circuit board (1) is provided inside the handle (12), and a buzzer (14), a flash light (15) and a battery (13) are connected to the circuit board (1); One end of the probe needle body is a detection end, and the other end is installed in the handle (12), and the inner pole (4) and the outer pole (2) are respectively connected to the circuit board (1).

2. The spinal puncture probe according to claim 1, characterized in that: A fixed joint (9) is provided at one end of the probe needle body close to the handle (12); The fixed joint (9) is fixed to the handle (12) via a limiting protrusion.

3. The spinal puncture probe according to claim 1, characterized in that: One end of the probe needle body close to the handle (12) is provided with a quick-change connector (5) which can be plugged into the handle (12); The handle (12) is provided with a locking device that cooperates with the quick-change connector (5); The locking device comprises a fixing sleeve (8) with a steel ball fixing hole, a steel ball (11) arranged in the steel ball fixing hole, and a locking sleeve (6) sleeved on the outer surface of the fixing sleeve (8); The fixed sleeve (8) is sleeved on the outer surface of the quick-change connector (5), and the outer surface of the quick-change connector (5) is provided with a limit groove that matches the steel ball (11).

4. The spinal puncture probe according to claim 3, characterized in that: The locking sleeve (6) is slidably mounted on the fixing sleeve (8); The locking sleeve (6) comprises a locking section with a smaller inner diameter and an unlocking section with a larger inner diameter; A gap is left between the unlocking section and the fixed sleeve (8), and the width of the gap is greater than the depth of the limiting slot.

5. The spinal puncture probe according to claim 3, characterized in that: One end of the fixing sleeve (8) extending into the handle (12) is provided with a fixing convex edge, and a fixing groove matching with the fixing convex edge is provided in the handle (12).

6. The spinal puncture probe according to claim 3, characterized in that: A spring (7) is sleeved on the outer surface of the fixed sleeve (8), and two ends of the spring (7) are respectively in contact with the fixed convex edges of the locking sleeve (6) and the fixed sleeve (8).

7. The spinal puncture probe according to claim 3, characterized in that: The cross section of the portion of the quick-change connector (5) inserted into the handle (12) is a hexagonal structure.

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