Handle type intelligent puncture instrument for intravertebral anesthesia

Abstract

The application discloses a handle type intelligent puncture instrument for intravertebral anesthesia, which comprises a shell, an anesthesia needle, a guide needle and a data processor, a fixing block for fixing the insertion end of the anesthesia needle is arranged at the front end of the shell, a base is fixed in the shell, a reverse L-shaped support is fixed at the front end of the base, a lead screw is arranged at the side of the reverse L-shaped support, a servo motor is arranged on the lead screw, a long slot is arranged on the reverse L-shaped support, the top of the servo motor passes through the slot and is sequentially connected with a first U-shaped clamping groove and a second U-shaped clamping groove which are respectively used for fixing the tail end of the anesthesia needle and the tail end of the guide needle, a ring-shaped pressure sensor is arranged in each of the first U-shaped clamping groove and the second U-shaped clamping groove, and the ring-shaped pressure sensor is connected with the data processor through a wire. The application has the advantages of reasonable design, convenient use, effective reduction of puncture difficulty, improvement of puncture success rate, real-time reflection of the needle insertion depth in the puncture process, avoidance of the risk of damaging nerve tissues, stable adsorption and improvement of work efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a handle type intelligent puncture instrument for intraspinal anesthesia. BACKGROUND

[0002] Intraspinal anesthesia is a kind of local anesthesia, which uses spinal puncture to inject local anesthetic into the spinal canal of the human back, acts on the spinal nerve root or spinal nerve, and temporarily blocks the conduction of the spinal nerve to the center and the periphery, so that the pain sensation of some corresponding areas of the human body disappears and the muscles relax. According to the different positions of the local anesthetic injected into the intraspinal canal and the different mechanisms of action, intraspinal anesthesia is divided into subarachnoid block (referred to as spinal anesthesia, commonly known as spinal anesthesia) and epidural block (referred to as epidural anesthesia). At present, intraspinal anesthesia has become one of the common anesthesia methods, but the intraspinal anesthesia puncture operation has high requirements on the technical level of doctors, and the traditional intraspinal anesthesia puncture instrument has the problems of high puncture difficulty, inconvenient operation, poor safety and the like, which may cause a series of complications. The common complication of intraspinal anesthesia failure is permanent nerve damage. If the spinal nerve root is damaged during the puncture needle is inserted into the subarachnoid space, it may cause permanent spinal cord injury, and even paralysis in severe cases.

[0003] The main reasons for this problem are as follows: on the one hand, it is caused by the physiological structure of the human body itself. Since the epidural space is narrow, the depth of puncture is difficult to grasp, and the current epidural puncture method is still blind puncture, mainly relying on the clinician's perception of the disappearance of resistance when the yellow ligament is pierced, and lacking clear objective indications. On the other hand, the doctor's arm will inevitably produce slight tremor during puncture, which will have serious adverse consequences when the fine spinal canal is pierced.

[0004] At present, there are solutions for the improvement of the anti-deviation and anti-slippage structure on the market, but there is still a problem that it is difficult to form objective and accurate monitoring of the intraspinal anesthesia puncture depth and positioning. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned problems of the prior art, and to provide a handle type intelligent puncture instrument for intraspinal anesthesia.

[0006] The technical scheme adopted by the present application is as follows:

[0007] The utility model provides a handle type intravertebral anesthesia intelligent puncture appearance, it includes casing, anesthesia needle, guide needle and data processor, the front end of casing is provided with fixed block of fixed anesthesia needle insertion end, the base is fixed in casing, the front end of base is fixed with inverted L shaped support, the side of inverted L shaped support is provided with lead screw, servo motor is set up on the lead screw, servo motor can slide along the lead screw, inverted L shaped support is equipped with the long strip of slot, servo motor top passes through the slot and is connected with first U shaped clamping groove, second U shaped clamping groove respectively for fixed anesthesia needle tail end, guide needle tail end in proper order through connecting piece, the annular pressure sensor is equipped in first U shaped clamping groove and second U shaped clamping groove, and the annular pressure sensor is connected with data processor through wire.

[0008] In a preferred scheme, the front end of the casing is provided with an angle measuring suction cup, and the side wall of the angle measuring suction cup is provided with an openable or closable piston assembly.

[0009] In the device, the first U-shaped clamping groove is provided with a first annular pressure sensor, the second U-shaped clamping groove is provided with a second annular pressure sensor, and the contact surface of the angle measuring suction cup with the skin is provided with a third annular pressure sensor, and the first, second and third annular pressure sensors are connected with the data processor.

[0010] Specifically, the first annular pressure sensor is fixedly arranged in the first U-shaped clamping groove, the tail end of the anesthesia needle can abut against the sensing surface of the first annular pressure sensor, the second annular pressure sensor is fixedly arranged in the second U-shaped clamping groove, the tail end of the guide needle can abut against the sensing surface of the second annular pressure sensor, the contact surface of the angle measuring suction cup with the skin is provided with the third annular pressure sensor, and the first, second and third annular pressure sensors are connected with the data processor.

[0011] In the device, the side of the first U-shaped clamping groove facing the second U-shaped clamping groove is fixedly provided with a connector, and the connector is provided with a through hole through which the guide needle passes.

[0012] Further, the casing further comprises a gun handle, the data processor is arranged in the gun handle, the data processor is connected with the servo motor, and the gun handle is externally provided with a switch connected with the data processor.

[0013] In the device, the piston assembly comprises a piston, a valve rod and a mounting seat, the surface of the valve rod is provided with a thread, the side wall of the angle measuring suction cup is provided with a negative pressure channel, the mounting seat covers and is fixed on the outside of the negative pressure channel, one end of the valve rod passes through a small hole in the middle of the negative pressure channel and is fixedly connected with the piston, and the piston can advance or retreat in the negative pressure channel through rotation of the valve rod.

[0014] Preferably, the negative pressure channel is formed by inwardly turning back from the side wall of the angle measuring suction cup.

[0015] In the device, the top of the casing is provided with an open operation port.

[0016] In the device, the anesthetic needle is provided with a needle core, the diameter of the needle core is smaller than the diameter of the center through hole of the first annular pressure sensor, and the tail end of the needle core is located outside the first U-shaped clamping groove.

[0017] The present application has the following beneficial effects:

[0018] The present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a partial enlarged view of A;

[0021] Figure 3 It is a structural schematic diagram of the first U-shaped clamping groove and the connector;

[0022] Figure 4 It is a structural schematic diagram of the second U-shaped clamping groove;

[0023] Figure 5 It is a structural schematic diagram of the piston assembly;

[0024] Figure 6 It is a schematic diagram of a specific algorithm satisfied between the third annular pressure sensor and the needle insertion angle;

[0025] Figure 7 It is a schematic diagram of the installation position of the anesthetic needle and the first U-shaped clamping groove;

[0026] In the figure: 1 - handle; 2 - anesthetic needle; 3 - guide needle; 4 - inverted L-shaped support; 5 - base; 6 - screw rod; 7 - servo motor; 8 - shell; 9 - third annular pressure sensor; 10 - angle measuring suction cup; 11 - piston assembly; 12 - mounting seat; 13 - valve stem; 14 - connector; 15 - first U-shaped clamping groove; 16 - second U-shaped clamping groove; 17 - first annular pressure sensor; 18 - second annular pressure sensor; 19 - data processor; 20 - slot; 21 - switch; 22 - through hole; 23 - fixed block; 24 - operating port; 25 - piston; 26 - negative pressure channel; 27 - needle core. DETAILED DESCRIPTION

[0027] The application will be further described below in conjunction with the accompanying drawings:

[0028] As shown in the figure, the application comprises a shell 8, an anesthetic needle 2, a guide needle 3 and a data processor 19. The front end of the shell 8 is provided with a fixed block 23 for fixing the insertion end of the anesthetic needle 2. The shell 8 is internally fixed with a base 5. The front end of the base 5 is fixed with an inverted L-shaped support 4. The side edge of the inverted L-shaped support 4 is provided with a screw rod 6. The screw rod 6 is provided with a servo motor 7. The servo motor 7 can slide along the screw rod 6. The inverted L-shaped support 4 is provided with a long slot 20. The top of the servo motor 7 passes through the slot 20 and is connected with a first U-shaped clamping groove 15 and a second U-shaped clamping groove 16 in sequence through a connecting piece for fixing the tail end of the anesthetic needle 2 and the tail end of the guide needle 3 respectively. The first U-shaped clamping groove 15 and the second U-shaped clamping groove 16 are both provided with annular pressure sensors. The annular pressure sensors are connected with the data processor 19 through wires.

[0029] In the device, the tip of the anesthetic needle 2 is conical for breaking through skin ligaments and other tissues. The guide needle 3 is a flexible needle with a flat and blunt tip and can be freely bent to avoid injuring nerve tissues.

[0030] The fixed block 23 provided at the front end of the shell 8 for fixing the insertion end of the anesthetic needle 2 can be a rubber plug with a needle hole in the middle. When the anesthetic needle 2 is inserted, it just blocks the needle hole in the middle of the fixed block 23.

[0031] The base 5 is fixed on the bottom surface of the shell 8 by screws and serves as a support so that when the servo motor 7 is started, the servo motor 7 can move linearly along the screw rod 6.

[0032] As a preferred embodiment, the front end of the shell 8 is provided with an angle measuring suction cup 10. The side wall of the angle measuring suction cup 10 is provided with a piston assembly 11 which can be opened or closed. The suction cup 10 can adsorb and stabilize the anesthetic needle 2. The shell 8 is gun-shaped and the top end is semi-open, i.e. the top of the shell 8 is provided with an operating port 24 for installation, disassembly and other operations.

[0033] The first U-shaped clamping groove 15 is fixed with a first annular pressure sensor 17, and the tail end of the anesthetic needle 2 can abut the sensing surface of the first annular pressure sensor 17. The second U-shaped clamping groove 16 is provided with a second annular pressure sensor 18, and the tail end of the guide needle 3 can abut the sensing surface of the second annular pressure sensor 18. The contact surface of the angle measuring suction cup 10 and the skin is provided with a third annular pressure sensor 9. The first annular pressure sensor 17, the second annular pressure sensor 18 and the third annular pressure sensor 9 are connected with a data processor 19. The first annular pressure sensor 17 is used to detect the pressure change when puncturing different tissues, so as to accurately reflect the needle insertion depth in real time. When the needle tip of the anesthetic needle 2 just enters the epidural space, the second annular pressure sensor 18 can be used to avoid the puncture needle touching the nerve tissue or even the arachnoid membrane. The third annular pressure sensor 9 can sense the pressure from different directions of the skin. Because the pressure direction on the bottom suction cup is different due to different needle insertion angles, the needle insertion angle can be displayed in real time, and the accuracy of needle insertion is improved.

[0034] Specifically, the diameter of the anesthetic needle 2 is greater than the diameter of the center through hole of the first annular pressure sensor 17, so that the anesthetic needle 2 cannot pass through the first annular pressure sensor 17 and is limited in the first U-shaped clamping groove 15. The diameter of the guide needle 3 is smaller than the diameter of the center through hole of the first annular pressure sensor 17 and greater than the diameter of the second annular pressure sensor 18, so that the guide needle 3 can pass through the first annular pressure sensor 17 and be limited in the second U-shaped clamping groove 16.

[0035] The side of the first U-shaped clamping groove 15 facing the second U-shaped clamping groove 16 is fixed with a connector 14, and the connector 14 is provided with a through hole 22 for the guide needle 3 to pass through.

[0036] The shell 8 further comprises a gun handle 1, and the data processor 19 is arranged in the gun handle 1. The gun handle 1 is externally provided with a switch 21 connected with the data processor 19. The data processor 19 is connected with the servo motor 7. When the switch 21 is pressed, the power supply is turned on, the servo motor 7 is started, and the servo motor 7 is stopped when the switch is released.

[0037] The piston assembly 11 comprises a piston 25, a valve rod 13 and a mounting seat 12, the valve rod 13 is provided with threads on the surface, the side wall of the angle measuring suction disc 10 is provided with a negative pressure channel 26, the cross section of the negative pressure channel 26 is circular, which is matched with the shape of the piston and has a sealing effect. The mounting seat 12 covers and is fixed outside the negative pressure channel 26, one end of the valve rod 13 is fixedly connected with the piston 25 by penetrating the small hole in the middle of the negative pressure channel 26, one end of the valve rod 13 can be provided with a rotating handle, the small hole in the middle of the negative pressure channel 26 is matched with the threads on the surface of the valve rod 13, the piston 25 can be advanced or retreated in the negative pressure channel 26 by rotating the valve rod 13, that is, when the angle measuring suction disc 10 needs to be installed, the valve rod 13 is rotated in the forward direction, the rotation drives the piston 25 to move to the outside of the negative pressure channel 26, a negative pressure state is formed in the angle measuring suction disc 10, so that the angle measuring suction disc 10 is adsorbed on the skin surface, when the angle measuring suction disc 10 needs to be removed, the valve rod 13 is rotated in the reverse direction, the rotation drives the piston 25 to move to the inside of the negative pressure channel 26, the pressure in the angle measuring suction disc 10 returns to normal, the adsorption force decreases and the angle measuring suction disc 10 can be removed from the skin.

[0038] In a preferred scheme, the negative pressure channel 26 is formed by the inward folding of the side wall of the angle measuring suction disc 10, and the two are integrated and smoothly transitioned.

[0039] The anesthetic needle 2 is provided with a needle core 27, the diameter of the needle core 27 is smaller than the diameter of the center through hole of the first annular pressure sensor 17, and the tail end of the needle core 27 is located outside the first U-shaped clamping groove 15. The needle core 27 is made of a slightly bendable material, and when it needs to be disassembled, the tail end can be bent to pull out of the anesthetic needle 2.

[0040] The various components of the device can be disassembled, sterilized and disinfected, and meet the sterile requirements of intraspinal anesthesia.

[0041] The use process of the present application is as follows:

[0042] Before puncture, the anesthesiologist determines the anesthetic block plane to determine the puncture site, and for patients with spinal lesions or severe obesity, the puncture path and needle insertion angle can be planned in advance in combination with ultrasonic images. After confirming the puncture site and needle insertion angle, the anesthetic needle 2 is clamped into the first U-shaped clamping groove 15, the tail end of the anesthetic needle 2 abuts against the sensing surface of the first annular pressure sensor 17 in the first U-shaped clamping groove 15, and the tail end of the needle core 27 is located outside the first U-shaped clamping groove 15, at this time the anesthetic needle 2 just blocks the needle hole in the middle of the front end fixed block 23 of the handle, then the angle measuring suction disc 10 is placed at the skin puncture point, and the skin around the puncture point is adsorbed due to the formation of a sealed space between the angle measuring suction disc 10 and the skin, at this time the valve rod 13 is rotated in the forward direction, the piston 25 is moved outward by a proper distance, the angle measuring suction disc 10 is adsorbed on the skin with a proper adsorption force, thereby the device is relatively fixed with the skin position, and it is convenient to determine the puncture angle subsequently.

[0043] Adjust the direction of the needle tip of the anesthetic needle 2, and confirm the angle of needle insertion according to the reading of the annular pressure sensor. After the angle of needle insertion is confirmed, press the switch 21 on the handle 1 to turn on the power supply of the servo motor 7. The servo motor 7 is pushed forward along the screw rod 6, and then the first U-shaped clamping slot 15 is synchronously moved forward along the slot 20, so that the anesthetic needle 2 is punctured into the soft tissue of the skin.

[0044] The tail of the needle core 27 is slightly bent to the side, and the connector 14 is pulled out from the gap between the first U-shaped clamping slot 15. Then the guide needle 3 is inserted into the anesthetic needle 2 in the original position of the needle core 27 through the connector 14. The tail of the guide needle 3 is clamped into the second U-shaped clamping slot 16, and the tail end is in contact with the sensing surface of the second annular pressure sensor 18 in the second U-shaped clamping slot 16. Continue to insert the needle, and the anesthetic needle 2 and the guide needle 3 are synchronously moved forward along the slot 20. At the same time, the readings of the pressure sensors are observed, and the direction is adjusted appropriately. When the needle tip of the anesthetic needle 2 just enters the epidural space, the pressure reading of the first annular pressure sensor 17 at the tail of the anesthetic needle 2 immediately decreases to a certain reading and remains unchanged. Immediately stop the needle insertion. At this time, it indicates that the needle tip of the anesthetic needle 2 reaches the epidural space. Adjust the direction of the guide needle 3 so that the reading of the second annular pressure sensor 18 is zero. At this time, the anesthetic needle 2 does not injure any blood vessels and nerves. Pull out the guide needle 3, insert one end of the hose into the tail of the anesthetic needle 2, and connect the other end to the infusion pump. Inject medicine into the anesthetic needle 2. The epidural anesthesia puncture is completed. Then rotate the valve rod 13 in the opposite direction, and rotate the piston 25 to move to the inside of the negative pressure channel 26. The pressure in the angle measuring suction cup 10 returns to normal, and the negative pressure suction state is released. At this time, the device can be easily removed from the patient.

[0045] Other processes of the present application can use existing technologies.

[0046] The best embodiment of the present application has been described, and further development of the present application by those skilled in the art falls within the scope of the present application.

Claims

1. A handle type intelligent puncture apparatus for intravertebral anesthesia, characterized in that It includes shell (8), anesthetic needle (2), guide needle (3) and data processor (19), the front end of the shell (8) is provided with fixed block (23) of fixed anesthetic needle (2) insertion end, the shell (8) is fixed with base (5) inside, the front end of the base (5) is fixed with inverted L-shaped support (4), the side of the inverted L-shaped support (4) is provided with lead screw (6), the lead screw (6) is provided with servo motor (7), the servo motor (7) can slide along lead screw (6), the inverted L-shaped support (4) is equipped with long strip slot (20), the servo motor (7) top passes through the slot (20) and is sequentially connected with first U-shaped slot (15) and second U-shaped slot (16) for fixing anesthetic needle (2) tail end, guide needle (3) tail end respectively, the first U-shaped slot (15) and second U-shaped slot (16) are all equipped with annular pressure sensor, the annular pressure sensor is connected with data processor (19) through wire; The side of the first U-shaped slot (15) towards second U-shaped slot (16) is fixed with connector (14), the connector (14) is provided with through hole (22) for guide needle (3) to pass through;First annular pressure sensor (17) is fixed in the first U-shaped slot (15), the tail end of the anesthetic needle (2) can be in contact with the sensing surface of the first annular pressure sensor (17), the second annular pressure sensor (18) is fixed in the second U-shaped slot (16), the tail end of the guide needle (3) can be in contact with the sensing surface of the second annular pressure sensor (18), the contact surface of the angle measuring suction disc (10) and the skin is provided with a third annular pressure sensor (9), the first annular pressure sensor (17), the second annular pressure sensor (18) and the third annular pressure sensor (9) are connected with the data processor (19); The shell (8) further comprises a gun handle (1), the data processor (19) is arranged inside the gun handle (1), the data processor (19) is connected with the servo motor (7), and the gun handle (1) is provided with a switch (21) connected with the data processor (19); The piston assembly (11) comprises a piston (25), a valve rod (13) and a mounting seat (12), the surface of the valve rod (13) is provided with a thread, the side wall of the angle measuring suction disc (10) is provided with a negative pressure channel (26), the mounting seat (12) covers and is fixed outside the negative pressure channel (26), one end of the valve rod (13) passes through the small hole in the middle of the negative pressure channel (26) and is fixedly connected with the piston (25), and the piston (25) can advance or retreat in the negative pressure channel (26) by rotating the valve rod (13); The negative pressure channel (26) is formed by the side wall of the angle measuring suction disc (10) folding back inwardly; The top of the shell (8) is provided with an open operation port (24).

2. The handle type intelligent intravertebral anesthesia puncture apparatus according to claim 1, characterized in that The diameter of the anesthetic needle (2) is greater than the diameter of the central through hole of the first annular pressure sensor (17), and the diameter of the guide needle (3) is smaller than the diameter of the central through hole of the first annular pressure sensor (17) and greater than the diameter of the second annular pressure sensor (18).

3. The handle type intravertebral anesthesia intelligent puncture apparatus according to claim 2, characterized in that A needle core (27) is installed in the anesthetic needle (2), the diameter of the needle core (27) is smaller than the diameter of the central through hole of the first annular pressure sensor (17), and the tail end of the needle core (27) is located outside the first U-shaped clamping groove (15).

Images